Read EMH Elektrizitätszähler GmbH & Co KG text version

EMH Elektrizitätszähler

GmbH & Co KG

Edition: 28.06.2004

LZQJ-PHB-E-12

Product Manual LZQJ

Digital 4-Quadrant-/ Combi Meter with Load Profile Memory

All information in this manual corresponds to the state of technological development and is subject to change. If you have any questions or inspirations you can contact us: EMH Elektrizitätszähler

GmbH & Co KG

Südring 5 D - 19243 Wittenburg Tel.: +49(0)3 88 52 ­ 645-0 Fax.: +49(0)3 88 52 ­ 645-29 Email: [email protected] Internet: www.emh-meter.de

EMH Elektrizitätszähler GmbH & Co KG is certified accord. to DIN ISO 9001:2000.

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LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

Prologue

In this manual all design variants from the product familiy LZQJ are described. Please note that the meters can be designed differently for configuration, interfaces, in-/outputs etc. It is therefore possible that meter features are described which do not apply to the meter(s) used by you.

Safety tips

The meters are to be used exclusively for measuring electrical energy and must only be operated within the specified technical data (see also name plate). When installing or changing the meter, the conductor to which the meter is connected must be de-energised. Contact of parts under voltage is extremely dangerous. Therefore the relevant back-up fuse is to be removed and stored so that other people cannot insert this unnoticed. Before opening the meter the secondary circuit to the current transformer must definitely be short circuited. The high voltage on the current transformer is extremely dangerous and destroys the current transformer. S0 inputs lead to network potential. Caution: danger! The local standards, guide lines, regulations and instructions are to be obeyed. Only authorised personnel are permitted to install the electricity meters.

Mounting and installation

LZQJ meters are designed for wall mounting accord. to DIN 43 857-2. When connecting the meter it is very important to take notice of the wiring diagram, which you can find inside the terminal cover and also on the delivery documents. In chapter ,,6. Circuit diagrams (examples)" you can find examples of wiring diagrams. Meters for direct connection are to be fused against short circuits with a back-up fuse of 63A or 100A and meters with a transformer connection in the voltage circuit with < 10A.

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Table of Contents

1. 4-Quadrant meter and Combi meter........................................ 7

1.1. Combi meter ................................................................................................ 7 1.2. 4-Quadrant meter ........................................................................................ 8

2. Standards ................................................................................. 9 3. Meter elements....................................................................... 10

3.1. Layout of the meter.................................................................................... 10 3.2. Layout of the display ................................................................................. 11

4. Technical description ............................................................. 13

4.1. Technical specification .............................................................................. 13 4.2. Function circuit diagram............................................................................ 15 4.2.1. Direct connection version ................................................................ 15 4.2.2. Transformer connection version ...................................................... 15 4.4. Modules ..................................................................................................... 16 4.4.1. Power unit ........................................................................................ 16 4.4.1.1. Auxiliary voltage supply .......................................................... 17 4.4.2. Data protection ................................................................................ 19 4.4.3. Protective circuit............................................................................... 19 4.4.4. Modular construction ....................................................................... 19 4.5. Digital measuring mechanism................................................................... 20 4.5.1. Measurement principle .................................................................... 20 4.5.1.1. Voltage measurement............................................................. 20 4.5.1.2. Current measurement ............................................................. 20 4.5.1.3. Measurement values............................................................... 20 4.5.1.4. Adjustment .............................................................................. 20 4.6. Tariff mechanism ....................................................................................... 21 4.6.1. OBIS (Object-Identification-System) ............................................... 21 4.6.2. Energy and power tariffs.................................................................. 22 4.6.2.1. Maximum demand metering................................................... 22 4.6.2.2. Measuring period tm ................................................................ 22 4.6.2.3. Decoupling time te ................................................................... 22 4.6.2.4. Output contacts ...................................................................... 23 4.6.2.5. Reset (cumulation) .................................................................. 23 4.6.2.6 Load profile .............................................................................. 24 4.7. Tariff time switch ........................................................................................ 25 4.8. Ripple control receiver (RCR).................................................................... 26 4.9. Data interfaces........................................................................................... 26 4.9.1. Optical interface D0 ......................................................................... 26 4.9.2. Electrical interface RS485................................................................ 27 4.9.3. Electrical interface RS232................................................................ 28 4.9.4. Electrical interface CL0 (CS)............................................................ 28 4.10. Inputs and Outputs.................................................................................. 29 4.10.1. Inputs ............................................................................................. 29 4.10.2. Outputs .......................................................................................... 29 4.10.3. Optical fibre interface LLS ............................................................. 29 4.11. Instrument software ................................................................................. 30

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5. Meter operation ...................................................................... 31

5.1. Operating and display ............................................................................... 31 5.1.1. Principle mode of actions of the operation and display ................. 32 5.1.2. Display and control .......................................................................... 41 5.1.2.1. Operation display.................................................................... 42 5.1.2.2. Display test.............................................................................. 42 5.1.2.3. Call-up mode Menu A-button ................................................. 43 5.1.2.4. Call-up mode standard (Menu option ,,Std-dAtA") ................ 43 5.1.2.5. Call-up mode load profile (Menu option ,,P.01") .................... 43 5.1.2.6. Call-up mode, certification relevant logbook (Menu option ,,P.99") .................................................................................................. 44 5.1.2.7. Call-up mode menu R-button ................................................. 45 5.1.2.8. Set mode (menu option ,,SEt") ............................................... 45 5.1.2.9. Call-up mode info (Menu option ,,InFO-dAtA") ...................... 45 5.1.2.10. Test mode (Menu option ,,tESt")........................................... 46 5.1.2.11. Parameter mode ................................................................... 46

6. Circuit diagrams (examples).................................................. 47

6.1. Transformer-operated meter for three phase four-wire systems.............. 47 6.2. Transformer-operated meter for three phase three-wire systems............ 48 6.3. Three phase meter for direct connection in four-wire systems ................ 48

7. Housing .................................................................................. 49

7.1. Base plate.................................................................................................. 49 7.2. Meter cover ................................................................................................ 49 7.3. Terminal block for transformer-operated meter ........................................ 49 7.4. Terminal block for direct connection 60A.................................................. 50 7.5. Terminal block for direct connection 100A................................................ 50

8. Ordering code ........................................................................ 51 9. Software tools......................................................................... 52

9.1. EMH-COMBI-MASTER 2000 ..................................................................... 52 9.2. COMBI-TOOL ............................................................................................ 53 9.3. TRANSFORMER-TOOL ............................................................................. 54

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Figure- and table index

Figure 1: OBIS code Combi meter............................................................................ 7 Figure 2: OBIS code 4-Quadrant meter.................................................................... 8 Figure 3: Operating elements ................................................................................. 10 Figure 4: Display...................................................................................................... 11 Figure 5: Function circuit diagram of the Standard-4-Quadrant-/Combi meter .... 15 Figure 6: Function circuit diagram of the Precision meter...................................... 15 Figure 7: Optical fibre isolation relay box................................................................ 30 Figure 8: Depiction of the changing of the display modes .................................... 32 Figure 9: Depiction of the call-up: menu A-button ................................................. 33 Figure 10: Depiction of the single call-up ............................................................... 34 Figure 11: Depiction of the load profile call-up....................................................... 35 Figure 12: Depiction of the call-up: Calibration relevant logbook .......................... 36 Figure 13: Depiction of the call-up: menu R-button ............................................... 37 Figure 14: Depiction of the set mode ..................................................................... 38 Figure 15: Depiction of the info list ......................................................................... 39 Figure 16: Depiction of the test mode ................................................................... 40 Figure 17: Dimensions ............................................................................................ 49 Table 1: Auxiliary voltage supply............................................................................. 18 Table 2: Isolating transformers available ................................................................ 18 Table 3: Apparent power recording ........................................................................ 18 Table 4: Examples of OBIS codes .......................................................................... 21 Table 5: Inhibition times for resettings .................................................................... 24 Table 6: Load profile depth per channel................................................................. 24 Table 7: RS485-interface......................................................................................... 27 Table 8: RS232-interface......................................................................................... 28 Table 9: CL0-interface ............................................................................................. 28 Table 10: Operation display (Example)................................................................... 42 Table 11: Cable diameter ........................................................................................ 51

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LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

1. 4-Quadrant meter and Combi meter

The Combi meter and 4-Quadrant meter are identical in appearance and belong to the same family of devices. The Combi meter is produced in large lots and has become widely used. The Combi meter and 4-Quadrant meter are the top of the line product and state of the art in hardware and software.

1.1. Combi meter

The Combi meter replaces measurement sets which consist of two Ferraris meters, an active use meter (OBIS code 1.x.x) and a reactive use meter (OBIS code 3.x.x). In addition, the Combi meter can perform reactive use measurement separately in quadrants 1 and 4 (OBIS code 5.x.x and 8.x.x) The Combi meter is capable of depicting the measurements according to the OBIS code system (IEC 62 056-61) which is illustrated in Figure 1.

Assigning OBIS codes to the quadrants for the Combi meter:

Reactive consumption import

Active consumption export

Figure 1: OBIS code Combi meter

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1.2. 4-Quadrant meter

The 4-Quadrant meter replaces the classical constellation of 4 Ferraris meters each comprising of an active consumption meter for imported and exported energy and also each comprising of an reactive consumption meter for imported and exported energy. The 4-Quadrant meter is able to depict the codes in Figure 2 from the OBIS code system. Assigning OBIS codes to the quadrants for the 4- quadrant meter:

Reactive consumption import

Active consumption export

Figure 2: OBIS code 4-Quadrant meter

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2. Standards

IEC 62053-22 (former IEC 687) Electricity metering equipment (AC) - Particular requirements - Part 22: Static meters for active energy (Class 0.2S and 0.5S) Alternating current static watt-hour meters for active energy (Class 1 and 2) Alternating current static var-hour meters for reactive energy (Class 2 and 3) Data exchange for meter reading, tariff and load control - Part 21: Direct local data exchange Electrical characteristics for balanced double-current interchange circuits operating at data signalling rates up to 10 Mbit/s Electrical characteristics of generators & receivers for use in balanced digital multipoint systems List of definitions for interchange circuits between data terminal equipment (DTE) and data circuitterminating equipment (DCE) Electrical characteristics for unbalanced doublecurrent interchange circuits Watthour meters in moulded insulation case without instrument transformers, up to 60 A rated maximum current; principal dimensions for poly-phase meters Watthour meters in moulded insulation case without instrument transformers, up to 60 A rated maximum current; principal dimensions for meter terminal cover for poly-phase meters Electricity metering - Data exchange for meter reading, tariff and load control - Part 61: Object Identification System (OBIS)

IEC 62053-21 (former IEC 61036) IEC 62053-23 (former IEC 61268) IEC 62056-21 (former IEC 61107) ITU-T V.11

TIA/EIA-485

ITU-T V.24

ITU-T V.28

DIN 43 857- 2

DIN 43 857- 4

IEC 62 056-61

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3. Meter elements

3.1. Layout of the meter

7 1

2 3 4

8 9

5 seal sealable 6

Figure 3: Operating elements

1. 2. 3. 4. 5. 6. 7. 8.

LC-Display Optical call-up sensor Parametering key (under meter cover) Mechanical call-up button Sealable instrument transformer plate Sealable terminal cover Impulse LED Optical data interface D0 with magnetic fixing for the optical communication head 9. Mechanical reset button (sealable)

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3.2. Layout of the display

The display is laid out as follows: Operating display Communication (Quadrant information) display Display of phases Unit

T1

T2

T3

T4

M1

M2

M3

M4

RCR RL CLOCK SET Cursor field

OBIS Code area

Figure 4: Display

Value area

The operating display represents the current energy import as it was measured from the meter (inductive/capacitive reactive power). If consumption current is flowing, then a status symbol alternatively shows which quadrant is being measured (quadrant information), e.g.: 1st quadrant +P/+Q 2nd quadrant - P/+Q 3rd quadrant - P/- Q 4th quadrant +P/- Q

The communication display appears when there is communication with the meter via data interfaces (optical, electrical). The display of the phases signalizes the connection of the individual phase voltages. With an incorrect rotating field all of the three symbols flash. In the code area the measuring values are shown on the basis of the OBIS code. In the value area the measuring values are represented with the corresponding units.

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In the cursor field the operating conditions of the meters are represented. The black arrows show which tariff and maximum demand is activated and via which tariff control element (RTC or RCR) the meter is controlled. T1-T4 Tariff information for energy. All activable tariff registers are declared on the nameplate. Tariff information for power. All actionable tariff registers are declared on the nameplate. The cursor flashes when the internal RCR is activated and ready to receive. The relevant cursor is switched on continuously when the internal ripple clock is receiving a telegram. The cursor flashes for the duration of the activation of a reset interlock. The cursor is continually switched on if the internal appliance clock controls the tariff switching. The cursor flashes when the appliances clock running reserve is exhausted and when the appliances clock can not be set afterwards. The relevant cursor is switched on when the meter is in the set mode.

M1-M4

RCR

RL Clock

SET

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4. Technical description 4.1. Technical specification

Direct connection version

5(60) A or 10(100) A Voltage 4-wire meter 3- wire meter 2- wire meter Current Frequency Accuracy Measuring system Measuring types active energy reactive energy designation active energy reactive energy others LED (Imp./kWh[kvarh]) output (Imp./kWh[kvarh]) configuration ability maximum number maximum number measuring period maximum number of channels typical memory depth at 1 channel registering period registering type accuracy synchronisation running reserve battery / capacitor number of channels / telegrams S0-input/system voltage 3x127/220 V...3x240/415 V 3x220 V...3x415 V --5(60) A or 10(100) A 50 Hz, 60 Hz Cl. 2, optional Cl. 1 Cl. 3, optional Cl. 2 hall sensor

Transformer connection version

Cl. 1 3x58/100 V...3x240/415 V, optional up to 3x400/690 V 3x100 V..3x415 V, optional up to 3x690 V 1x58 V...1x240 V 5II1A 50 Hz, 60 Hz, 16 2/3 Hz Cl. 1 Cl. 2 compensated current transformer

P+, PQ+, Q-, Q1, Q2, Q3, Q4 S, Ah, U2h, I2h 500...1 000 (depending on meter type) 10 000...40 000 (depending on meter type) 250...500 (depending on meter type) 5 000...20 000 (depending on meter type) after certification by means of the certification relevant logbook 32 tariff registers + tariffless register, each with 15 historical values 32 tariff registers + tariffless register, each with 15 historical values 1, 5, 10, 15, 30, 60 min, adjustable 32 317 days 1, 5, 10, 15, 30, 60 min, adjustable power, energy, energy feed within ± 5 ppm via data interfaces, control input or DCF-module > 20 years / > 10 days 6 / all common telegrams max. 1 / max. 6 without voltage in the FLASH-ROM, at least 10 years

Meter constants

Energy registers Maximum registers Load profile

Real Time Clock

Ripple control receiver Control inputs Data retention time Display Operation Data interfaces

display version alternative display version mechanical buttons optical sensor optical data interface electrical data interface data protocols maximum transmission rate number Opto-MOSFET S0-output relays switched-mode power supply mains buffering time longe-range

VDEW-display 84 mm x 24 mm, height of digits 8 mm alphanumerical display 4 x 20 characters for operation of display and reset for operation of display optical data interface D0 RS485, CL0 or RS232 IEC 62056-21 or DLMS 9600 Baud (fixed or Mode C) max. 6 max. 7 max. 250 V AC/DC, 100 mA, make contact and break contact max. 27 V DC, 27 mA max. 250 V AC/DC, 100 mA (max. 2 relays) 3-phase > 500 ms ----< 1.3 VA / < 0.8 W < 0.01 VA --48...300 V AC/DC < 0.02 VA / < 0.01 W (3x58/100 V) < 1.3 VA / < 0.8 W < 0.004 VA < 1.8 VA...< 2.9 VA

Outputs

Energy supply Auxiliary voltage supply

Power consumption per phase voltage path (Basic meter) with auxiliary voltage without auxiliary voltage current path auxiliary voltage Electrical parameters isolation resistance surge voltage resistance against HF-fields Temperature range Relative humidity Housing dimensions class of protection

degree of protection: housing/terminal block

isolation: 4 kV AC, 50 Hz, 1 min. surge voltage: 8 kV, impulse 1.2/50 µs, 2 (measuring path, auxiliary voltage) 6 kV, impulse 1.2/50 µs, 500 (outputs: Opto-MOSFET, relay) 30 V/m (with load) -25°C...+55°C / -40°C...+70°C 90% at 40°C, non-condensing accord. to DIN 43857 class of protection 2 IP 51 / IP 31 polycarbonate glass-fibre-reinforced, recyclable flame-inhibiting (without halogen) 1.6 kg 1.35 kg

operating / limit and storage

housing material fire characteristics weight

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LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

Precision meter

Cl. 0.5 Voltage 4-wire meter 3- wire meter 2- wire meter Current Frequency Accuracy Measuring system Measuring types active energy reactive energy designation active energy reactive energy others LED (Imp./kWh[kvarh]) output (Imp./kWh[kvarh]) configuration ability maximum number maximum number measuring period maximum number of channels typical memory depth at 1 channel registering period registering type accuracy synchronisation running reserve battery / capacitor number of channels / telegrams S0-input/system voltage Cl. 0.5 1% (Cl. 2)

Precision meter

Cl. 0.2

3x58/100 V...3x240/415 V, optional up to 3x400/690 V 3x100 V..3x415 V, optional up to 3x690 V 1x58 V...1x240 V 5II1A 50 Hz, 60 Hz, 16 2/3 Hz Cl. 0.2 0,5% (Cl. 2)

compensated current transformer P+, PQ+, Q-, Q1, Q2, Q3, Q4 S, Ah, U2h, I2h 10 000...100 000 (depending on meter type) 5 000...50 000 (depending on meter type) after certification by means of the certification relevant logbook 32 tariff registers + tariffless register, each with 15 historical values 32 tariff registers + tariffless register, each with 15 historical values 1, 5, 10, 15, 30, 60 min, adjustable 32 317 days 1, 5, 10, 15, 30, 60 min, adjustable power, energy, energy feed within ± 5 ppm via data interfaces, control input or DCF-module > 20 years / > 10 days 6 / all common telegrams max. 1 / max. 6 without voltage in the FLASH-ROM, at least 10 years

Meter constants

Energy registers Maximum registers Load profile

Real Time Clock

Ripple control receiver Control inputs Data retention time Display Operation Data interfaces

display version alternative display version mechanical buttons optical sensor optical data interface electrical data interface data protocols maximum transmission rate number Opto-MOSFET S0-output relays switched-mode power supply mains buffering time longe-range

VDEW-display 84 mm x 24 mm, height of digits 8 mm alphanumerical display 4 x 20 characters for operation of display and reset for operation of display optical data interface D0 RS485, CL0 or RS232 IEC 62056-21 or DLMS 9600 Baud (fixed or Mode C) max. 7 max. 250 V AC/DC, 100 mA, make contact and break contact max. 27 V DC, 27 mA max. 250 V AC/DC, 100 mA (max. 2 relays) 3-phase > 500 ms 48...300 V AC/DC < 0.02 VA / < 0.01 W (3x58/100 V) < 1.3 VA / < 0.8 W < 0.004 VA < 1.8 VA...< 2.9 VA isolation: 4 kV AC, 50 Hz, 1 min. surge voltage: 8 kV, impulse 1.2/50 µs, 2 (measuring path, auxiliary voltage) 6 kV, impulse 1.2/50 µs, 500 (outputs: Opto-MOSFET, relay) 30 V/m (with load) -25°C...+55°C / -40°C...+70°C 90% at 40°C, non-condensing

Outputs

Energy supply Auxiliary voltage supply

Power consumption per phase voltage path (Basic meter) with auxiliary voltage without auxiliary voltage current path auxiliary voltage Electrical parameters isolation resistance surge voltage resistance against HF-fields Temperature range Relative humidity Housing dimensions class of protection

degree of protection: housing/terminal block

operating / limit and storage

housing material fire characteristics weight

accord. to DIN 43857 class of protection 2 IP 51 / IP 31 polycarbonate glass-fibre-reinforced, recyclable flame-inhibiting (without halogen) 1.6 kg

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4.2. Function circuit diagram

4.2.1. Direct connection version

Divider U1 Hall-sensor I1 Amplifier

ADC 1 Sensors/Buttons LC-Display ADC 2

Imp. LED

7 control inputs or 6 control inputs + 1S0

Divider U2 Hall-sensor I2 Amplifier

RAM ADC 3

ADC 4

Divider

CPU

FLASH RTC

U3 Hall-sensor I3 Amplifier

ADC 5 Data in/out D0 RS-485 RS-232 LLS Outputs max 6 S0/ MOSFET or 2 relays plus 5 S0/ MOSFET

ADC 6

Protective circuit

N

Switched mode power supply

Supply electronics

CL0

Figure 5: Function circuit diagram of the direct connection version

4.2.2. Transformer connection version

Divider U1

ADC 1 Sensors/Buttons LC-Display

Compensated current transformer Divider

Imp. LED

7 control inputs or 6 control inputs + 1S0

I1

ADC 2 RAM ADC 3

U2

CPU

I2 Compensated current transformer Divider U3

FLASH RTC

ADC 4

ADC 5 Data in/out D0 RS-485 RS-232 LLS Outputs max 7 S0/ MOSFET or 2 relays plus 5 S0/ MOSFET

I3

Compensated current transformer

ADC 6

Protective circuit N

CL0 Switched mode power supply

Supply electronics

UH1 UH2

External auxiliary voltage Protective circuit

Figure 6: Function circuit diagram of the transformer connection version

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4.4. Modules

The meter consists of two essential elements: · · digital measuring mechanism tariff mechanism

The measuring mechanism is decisive for the accuracy of the meter. It determines the basic measurements, transforms them into digital information and conveys them to the tariff mechanism for calculation and processing. The experience in meter testing technology has been used to obtain this high degree of meter accuracy. Both modules, the measuring and tariff mechanisms, are charged with a common power unit.

4.4.1. Power unit This is a primary, switched-mode power unit (3x58/100V ... 3x240/415V) with a high degree of effectiveness. 3-wire meters with 3x100V ... 3x415V are also supported. The power supply is earth-fault-proof and operation without neutral conductor is guaranteed. In the event that a module defect occurs when operating then it is secure against overload or short circuiting. Potential damage remains limited and consequential damage is avoided.

For LZQJ meters with a single-phase connected meter, error-free operation until Unom - 20% is guaranteed.

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4.4.1.1. Auxiliary voltage supply Only valid for LZQJ-P2 ... and LZQJ-P5 ... (Precision meters with an accuracy of 0,2S and 0,5S)!

The LZQJ as a precision meter has the possibility of external auxiliary voltage. In general it is differentiated between two functionality's (qualities): a) Pure auxiliary voltage supply: The energy is only taken from the auxiliary voltage circuit. b) Combined supply: With certain occurring voltage conditions the energy for the electronic measuring device is no longer taken from the auxiliary voltage supply but from the measuring voltage(s). When the auxiliary voltage supply completely fails then the energy for the electronic measuring device is taken only from the measuring voltage (feature of the combined supply). In spite of the auxiliary voltage failure the meter is completely capable of functioning (advantage when compared to pure auxiliary voltage supply).

The following design variants of the auxiliary voltage are possible: Type 1 Design with pure auxiliary voltage supply and galvanic separation between the auxiliary- and measuring circuit (2kV AC, 1min). Type Z Combined supply independent of the measuring voltage without galvanic separation between the auxiliary- and measuring circuit. The auxiliary voltage supply is only effective when the auxiliary voltage is larger than the measuring voltage. With less auxiliary voltage or failure of the auxiliary voltage the functions of the device are assured by the measuring voltage. Type R Combined supply independent of the measuring voltage without galvanic separation between the auxiliary- and measuring circuit. With failure of the auxiliary voltage the functions of the device are assured by the measuring voltage. Type 2 Combined supply independent of the measuring voltage with galvanic separation (4kV AC, 1min) between the auxiliary- and measuring circuit accord. to class protection 2. With failure of the auxiliary voltage the functions of the device are assured by the measuring voltage.

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Type =Y 1

1)

Functionality (qualities) Pure auxiliary voltage supply Combined supply

Measuring voltage effective on meter types all 3x 58/100V, 3x 100V, 1x100V 3x 63/110V, 3x110V, 1x110V

Effective auxiliary voltage range 48V ­ 300VAC/DC

Range of functions without auxiliary voltage -

Galvanic separation 2kV, 1min

Z

100V ­ 300VAC 145V ­ 300VDC 110V ­ 300VAC 160V ­ 300VDC 80V ­ 130VAC/DC 48V ­ 300VAC/DC Class protection 2 4kV, 1min -

Measuring voltage ± 20%

R 2

Combined supply Combined supply Class protection 2

all all

Table 1: Auxiliary voltage supply

A long-range in the measuring path is only possible with combined supply of the types R and 2, however not with type Z . Meters with a measuring voltage of 3x58/100V and 3x63/110V and combined supply independent of the measuring voltage a meter start-up is not given for power supply and one phase nominal voltage.

The types 1, Z, R, 2 originated due to different application requirements. In order to realise the types 1, Z and R in addition to these requirements also in class of protection 2 we recommend for auxiliary voltage supply with alternating voltage to connect in series an isolating transformer in the auxiliary circuit. Table 2 shows all available designs. Order code TTR-225G-00 TTR-215G-00 TTR-335G-00

Table 2: Isolating transformers available

Uprimary 230 V 230V 100 - 110 V

Usecondary 230 V 110 V 100 - 110 V

With supplied auxiliary voltage in the effective auxiliary voltage range (see Table 1) a disburden of the voltage paths in the measuring device takes place, whereby the apparent power consumtion is then much lower (see Table 3).

Type1) =Y Z, R, 2 1 Z, R 2 Measuring voltage 3x58/100V up to 3x63/110V resp. 3x100V/3x110V with combined supply 0.02VA 3x58/100V up to 3x63/110V resp. 3x100V/3x110V with pure combined supply 3x230/380V up to 3x240/415V resp. 3x380V/3x415V with combined supply 3x230/380V up to 3x240/415V resp. 3x380V/3x415V with combined supply class protection 2 3x230/380V up to 3x240/415V resp. 3x380V/3x415V with pure auxiliary voltage supply 1 3x400/690V resp. 3x690V with pure auxiliary voltage supply Table 3: Apparent power recording 0.1VA 0.3VA Apparent power recording per measuring path

1)

Type code: LZQJ-PXXX- Y X-XXX-XX-XXXXXX-XXX

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4.4.2. Data protection When operating, the current measurements are stored in the working memory (RAM). Every 24 hours, this data is stored in a non-volatile memory. In the event of power failure or drop below the minimum voltage, the electronics will continue to function normally for the next 500ms. It is powered by the energy in the chargercapacitor. If it is only a short power failure of less than 500 ms, then the meter will continue to operate quasi-non-stop. Only in cases of longer interruptions will the measuring period be interrupted and the device completely shut down so that a new measuring period will be started when the meter is reactivated. Data remains stored in the non-volatile memory for at least ten years. No buffer battery is needed to preserve the data. The data received is retained alone through the qualities of the storage medium (Flash).

4.4.3. Protective circuit The protective circuit behind the voltage terminals consists of a combination of surge-proof power resistors and varistors which dilute the surge energy in the event of an over-voltage. This means: fast, energy-rich disturbance pulses which might be caused by turning off reactive loads or the local transformer are effectively prevented from reaching the microelectronics.

4.4.4. Modular construction The entire measuring and tariff mechanism (including the options) are included on a single circuit board: · · · · · · clock module tariff time switch ripple control receiver electrical interfaces control inputs control outputs

The modular structure of the entire meter means that the meter can be assembled to perform functions in accordance with the customer's desired meter properties. The display is plugged onto the circuit board and can be easily exchanged.

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4.5. Digital measuring mechanism

4.5.1. Measurement principle Measurement is performed by taking voltage and current samples at very short intervals. These samples are converted to digital values in an analogue to digitalconverter. The digitized current and voltage values are assigned to a microprocessor and then processed. This guarantees a very high accuracy and stability. 4.5.1.1. Voltage measurement The terminal voltages generate network-proportional internal voltage levels. These are fed into the input channels of the analogue-digital-converter (ADC). 4.5.1.2. Current measurement Meters for direct connection: The current paths contain gapped ferrite cores and in their air gap there are hall sensors which generate current proportional voltages (Hall voltage). These are fed into the input channels of the analogue digital converter (AD) via an instrument amplifier. Meters for transformer connection: For measuring the current, compensated current transformers are used. These are fed into the two ADC inputs via an instrumental amplifier. 4.5.1.3. Measurement values The measurement values can be seen on the display and read out using the D0interface or electrical interface (RS232, RS485, CL0): · · · instantaneous active-, reactive- and apparent power for each phase and the combined value, individual line current and line voltages, number of active phases, line frequency and power factor as well as power factor for individual phases.

4.5.1.4. Adjustment EMH's Combi meter and 4-Quadrant meter are fully static and digital meters. In practice, that means there are no mechanical moving parts in the measuring device. That also means that the electronic components' tolerances are matched to each other in a way so that a partial adjustment between manufacturing steps is unnecessary. Thus the devices can be produced rationally in identical series. At the end of the production process, the meters are subjected to a final adjustment. The meters are submitted to a precise normal load on the test stand. Each meter measures this load and transmits its measurement to the test stand via an optical interface. This compares the meter's measurement with its own precise measurement and sends measurement correction factors back in the meter in form of measurement constants. These are then stored in the non-volatile memory elements of the meter. The adjustment constants are protected against external access. 20

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4.6. Tariff mechanism

Using digitized measurement values, the tariff mechanism calculates electricity consumed or supplied as well as electrical power. It then assigns it to the respective energy or power register according to the tariff control and meter configuration provided. 4.6.1. OBIS (Object-Identification-System) The Object-Identification-System OBIS is an identification system which was primary developed for electricity purposes and is described in IEC 62 056-61. It serves to identify measured values and data which, through this system are clearly identifiable independent of the device and producer. Due to the very general structure OBIS is also suitable for the areas water, gas and heat. In the field of measuring electrical energy and power, the identification code allocation for the measured variable (1. value), measured type (2. value), tariff (3. value) and historical value (4. value) is of importance. In Table 4 codes are described which are often used with EMH electricity meters. Measuring type C 1.x.x.x Active energy + (import) 2.x.x.x Active energy ­ (export) 3.x.x.x Reactive energy + (import) 4.x.x.x Reactive energy ­ (export) 5.x.x.x Reactive energy Q I .. 8.x.x.x Reactive energy Q IV Measuring variable D x.2.x.x x.4.x.x x.5.x.x x.6.x.x x.8.x.x x.29.x.x Tariff E x.x.n.x Tariff , n = 0 .. 4 Cumulative (sum of the reset maximum demand) Passed time of the measuring period + average value of the current measuring period Average value of the last measuring period Maximum demand + time stamp (time, date season) Energy Energy feed

Historical values F x.x.x.n historical values, n = 0 .. 99 (with reference to the reset counter)

Table 4: Examples of OBIS codes

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4.6.2. Energy and power tariffs With the meters it is possible to configure up to 32 meter mechanisms for electrical energy and power. Each meter mechanism has up to 15 historical values which show the measurements and time stamps of the last 15 reset billing periods. The assignment of the measurement variables are configured at EMH according to customer requirements. 4.6.2.1. Maximum demand metering The creation of a maximum is based on the measurement of average power over a synchronized or sliding measuring period tm. The time integral of the accured energy is divided by the measurement period. If the current power value exceeds the highest power value since the beginning of the billing period, then this value is taken as the new maximum in the affected register with the applicable measuring period time stamp.

4.6.2.2. Measuring period tm The measuring period duration tm is derived from the line frequency and defined by a period generator in the meter. The length of the measurement period can be configured as a 1, 2, 3, 5, 10, 15, 30 or 60 minute raster according to customer requirements. Occasional maximum demand measurement The beginning of a maximum demand measurement (and thereby of a measurement period) is started by an internal switch signal from the: · · tariff time switch ripple control receiver, or

externally via a switch signal from one of the supplementary terminals at the: · · control input S0 a control input configured for this purpose (device voltage).

4.6.2.3. Decoupling time te In order to control other devices (e.g. a maximum demand monitor), a decoupling signal te can be generated at either an output (aux. terminal) or an optical fibre interface. The regulation VDE 0418 Part 4 specifies that the decoupling time is not to exceed either of the following values: · · 1% of the measuring period or 15 seconds

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This decoupling period is a component of the measuring period and is generated at the beginning. The decoupling time for the measuring periods most commonly used in Europe, 15 minutes (= 900 s) therefore the decoupling time is 9 seconds. Electronic maximum demand meters need nearly no reset time. The speed of the software running time and rapid switching in the semiconductor element lie at a maximum in the millisecond range. Although the decoupling signal is emitted according to regulations, the electronic maximum demand meter continues to measure during this period.

4.6.2.4. Output contacts Altogether up to 7 output contacts are provided for transmissions to the customer. These output contacts are optionally S0 outputs, relays (max 2) or MOSFET outputs. S0 and MOSFET outputs can be either make or break contacts. If the output element is a relay the output can be a changeover contact. If the outputs listed here are not insufficient or if a future-oriented conception is to be applied, then it is recommended to use the option optical fibre interface for the separate connection of an optical fibre isolating relay box. The advantages are explained in chapter "Optical fibre interface LLS".

4.6.2.5. Reset (cumulation) The introduction of electronics into metering has meant that the scope of functions which resetting can perform has been significantly expanded. The results are as follows: · · · · · · · interruption of current measuring period saving of current maximum demand in the appropriate historical value memory cumulation of current maximum demand in the cumulation register reset to zero of maximum demand mechanism reset to zero of current average power saving of occurred energy values at reset time activation of reset block

Resetting can be activated by one of the following reset types: · · · · · · optical reset sensor or mechanical reset button internal tariff time switch internal ripple control receiver external control input optical data interface D0 electrical data interface, e.g. RS232, RS485 or CL0

After a reset, a temporal restricted inhibition is activated for a new resetting dependent of the selected reset channels 1-5 (see Table 5). This inhibition lasts at least one measuring period and 40 days at the most. With every resetting the inhibition time is newly activated. There are two different lengths of inhibition times, 0 and t1. 0 is a synonym that shows that no inhibition has been activated. In the table it is shown which inhibition times are activated by a resetting through the reset channels 1-5.

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Example: A resetting via the channel ,,button" blocks a new resetting via the same channel (button) or via other channels (interfaces ... period counter) for different time intervals. Inhibition times for new resets via: Initiation of a resetting via ... ... Optical sensor or push button ... Interfaces (optical, electrical) ... Connectors (connector block) ... Internal ripple control receiver (RCR) ... Internal Real Time Clock or internal period counter 1 t1 0 0 0 0 2 0 t1 0 0 0 3 0 0 t1 t1 t1 4 0 0 t1 t1 t1 5 0 0 t1 t1 t1

1 2 3 4 5

Table 5: Inhibition times for resettings

The reset barriers are cancelled by a 3 phase voltage failure. For every reset the relevant time information is (timestamp) stored. The reset counter runs from 0-99 (rolling) and serves simultaneously as an index for the historical values.

4.6.2.6 Load profile The integrated load profile in the meter has the following memory depths (at tm = 15min, 2 header per day and the format x.xxx kW): No of channels 1 2 4 6

Table 6: Load profile depth per channel

Days at tm = 15min approx. 300 approx. 200 approx. 100 approx. 80

The number of channels lies between 1 and 6 (optional up to 32). They are configurable so that a measurement variable may be assigned to each channel. The load profile always operates synchronized. A new measuring period (for tm = 15 minutes) commences at every full hour on the real time clock in the meter: that means at hh:00, hh:15, hh:30 and hh:45. In the event of a voltage failure, the current time is stored in the data memory. After power restoration, two methods are differentiated between: a) Power restoration within the current measuring period = no new measuring period is created, the current measuring period continues. Power restoration outside the current measuring period = a new measuring period is formed. b) With each power restoration a new measuring period is created. The load profiles are shown on the display. The optical call-up sensor/button (depending on the model) allows the values to be examined. The load profile depth for the output via data interfaces is configurable. It can be coupled with up to four readout lists so that the scope of data selected can fit various requirements. Beyond that there is the possibility to choose particular periods in the load profile to be read out. This is done using formatted commands. 24

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4.7. Tariff time switch

The tariff time switch is integrated into the meter. It is based on a quartzcontrolled, battery or capacitor-buffered real time clock which provides time information (date, day of week, time) in second intervals. Switching times can be configured for the customer using: · · · 16 season tables, 16 day types or 384 holiday definitions for any weekdays

These are compared continuously with the real time clock. When they coincide with the switching times configured or switching periods, then the switching function commences. Switching functions are the activation of the power and energy register. As a result of this 30 energy registers and 30 power registers with a maximum of 4 tariffs are configurable via the tariff switching clock. At the beginning of the summer period an hour can be added on to the tariff switching clock (MEZ). The beginning and end of the summer period is determined with the help of a summer time register. The summer time register is settable in order to be able to react to possible changes of the current valid summer time regulation. The accuracy of the real time clock amounts to 5ppm. The buffering of the Real Time Clock (RTC) is done by a SuperCap-capacitor with a running reserve of > 10d. With a completely discharged SuperCap the charge time is approx. 18min after connection of the meter to the voltage lines (90% voltage). Instead of a SuperCap- capacitor a battery (dry Li-battery) with a running reserve of > 20 years can be ordered. The latter is recommended for meters with load profile memories so that they are correctly treated when there are longer power interruptions or the meter has been turned off for longer periods. The real time clock can be operated synchronized with the network. That means it is cyclically synchronized using a time counter in the meter which derives its time from the line frequency. It can however also be synchronized via the following variations. · Crystal lead internal clock · Synchronisation of the internal clock through an impulse at the input contact. Synchronisation takes place at the next measuring period ending. · Synchronisation of the internal clock through an impulse at the input contact. Synchronisation takes place at a fixed time of the day. This point of time is set through the parameter HHMMSS. · Synchronisation of the internal clock through an impulse at the input contact. Synchronisation takes place at the next full 1 minute. · Synchronisation of the appliances clock through a DCF-77 receiver connected at the impulse.

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4.8. Ripple control receiver (RCR)

The ripple control receiver supports the following protocols/telegrams, which can be configured via the data interfaces (D0, RS232, RS485, CL0): ABB Ricontic b ABB Ricontic s L&G Semagyr 50a L&G Semagyr 50b L&G Semagyr 52 L&G Semagyr 56 RWE Sauter Schlumberger Pulsadis I Schlumberger Pulsadis II EdF CDC Siemens TELENERG Zellweger ZAG 60 Zellweger ZAG 180 Decabit ZPA An advantage of the system is that it is possible to configure the RCR by modem and to call up status information such as relay status and the last telegram received. The RCR has 6 outputs which are available for the control function of the meter. In addition, the tariff and maximum demand control, early warnings and resettings can be transmitted directly from the terminals over the optical fibre interface.

4.9. Data interfaces

The data exchange between meters and read out devices is performed either by an optical interface (D0) or through auxiliary terminals by means of the electrical interface (RS232, RS485 or CL0). The transmission rate is fixed between 300 and 9600 baud or can be set in mode C.

4.9.1. Optical interface D0 IEC 62056-21 describes the mechanical, optical and electrical attributes of the optical communication head and the fixing point on the meter.

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4.9.2. Electrical interface RS485 The electrical interface RS485 (galvanically de-coupled) is found at the two additional terminals (A and B) under the sealable terminal cover. This is a symmetrical two-wire-interface and is designed in accord. with TIA/EIA485/ ITU-T V.11. The distance between the read-out device and the meter may not exceed 1000 m. RS485 balanced two-wire-interface, half duplex No. of connected meters Max. cable length Data transmission rate Signal accord. to TIA/EIA-485 / ITU-T V.11

Table 7: RS485-interface

up to 32 up to 1000 m 300 ... 9600 baud logical "1" -0.3 V to ­6 V logical "0" +0.3 V to + 6 V

RS485 Bus Up to 32 devices can be operated by one RS485 Bus. In this bus system the first and last device must be terminated with a terminating resistor between wire ,,A" and ,,B" in order to eliminate conduction reflections.

Bus structure:

Device 1 Device 2 Device 32

see detail

...

A B A B

see detail

A

B

RS485 2-wire bus

Detail:

RS485

A

B Connecting terminals

23 24

RTERM= 120

Please note! The terminating resistor may be installed only with the first and last device.

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4.9.3. Electrical interface RS232 The electrical interface RS232 (galvanically de-coupled) is found at the three additional terminals (RxD, TxD and GnD) under the sealable terminal cover. This RS232 is a symmetrical two-wire-interface and is designed in accord. with ITU-T V.24 and ITU-T V.28. The distance between the read-out device and the meter may not exceed 15 m. RS232 balanced two-wire-interface No. of connected meters Max. cable length Data transmission rate Signal accord. to ITU-T V.28

Table 8: RS232-interface

1 up to 15 m 300 ... 9600 baud logical "1" - 3 V to - 15 V logical "0" + 3 V to + 15 V

4.9.4. Electrical interface CL0 (CS) The electrical interface CL0 (galvanically de-coupled) is found at the additional terminal under the sealable terminal cover. The CL0-interface conforms with DIN 66 348, Part 1. It is a passive two-wire interface, i.e. possesses no own power source. Data is transmitted as mark/space at a nominal current of 20mA. For that reason, it is also called a 20mA current interface. The voltage drop of the series-switched transmitters and receivers in the meter is about 4V. Thus a maximum of four meter outputs can be switched in series and operated by one modem. The meters can be addressed and can therefore be called up specifically. The CL0 interface can be used for data transmission up to one kilometre. CL0 (DIN 66 348, Part 1), 20mA two-wire-interface one zero 2.5mA 11mA 3mA 9 mA

Signal Transmitter Receiver

Permissible voltage drop Transmitter max. 4V Receiver max. 4V Maximum value Current Voltage

Table 9: CL0-interface

24mA (short circuit) 27V (open circuit)

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4.10. Inputs and Outputs

4.10.1. Inputs 7 control inputs with systems voltage (potential free), optionally one of these as S0 input (not potential-free), max 27 V DC, 27 mA (active)

4.10.2. Outputs For an output contact a S0 output according to DIN 43 864, relay (max 2) or a semiconductor relay (MOSFET-output) is available. The MOSFET-Specification can be a make contact or an opener. S0 Output: Pulse duration 20-500ms (25-1Hz) in 20ms steps; Energy impulse 100-10.000 Imp/kWh; max 27 V DC, 27 mA (passive) max 250V AC/DC, 100 mA

Relay:

Opto-MOSFET: max 250V AC/DC, 100 mA

4.10.3. Optical fibre interface LLS An especially innovative option to the classical outputs is EMH's transmission protocol for an optical fibre interface. EMH has put this concept into an optical fibre isolating relay box (see Figure 7). On one of the meter terminals is a coupling point where an optical fibre contact can be established by simply plugging in and screwing down. An optical fibre isolating relay with up to six outputs is plugged onto the other end of the optical fibre cable. The relay box is in EN 50 022 DIN-rail housing. It has its own optical fibre output so that altogether four relay boxes can be cascaded. Thus a total of 24 control outputs can be created. The data from the meter to the optical fibre isolating relay is transmitted at 4800 baud. Each optical fibre isolating relay output can be designed with a relay (with optional suppresser circuit) or Opto-MOSFET technology as a make or break contact. A wide-area power unit from 100V to 230V serves as the power supply for the optical fibre isolating relay. A complex input suppresser circuit protects the device from destruction due to impure power supply. Optimal isolation is obtained by means of the galvanic separation of the optical fibre from the meter and relay boxes described here. Since contact and relocation of the optical fibre cable is not complicated, this variant offers substantial savings in installation costs. The optical fibre cable makes it possible to link the meter and the relay box over a distance of 20 metres and with a cascading relay of up to 50 metres.

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Figure 7: Optical fibre isolation relay box

4.11. Instrument software

Diverse configurable variables have been programmed which define the meter's functions. These include · settable variables · parameterable variables The parameterable variables include those which define the meter's attributes. Settable variables can be changed by combination of optical call-up sensor/reset sensor or call-up button/reset button (depending on the model) via the D0, RS232, RS485, CL0 in accordance with IEC 62 056-21. Parameterable variables can only be changed via the optical interface D0- or electrical interface (RS232, RS485, CL0). To do this the meter must be in the parametering status (by using the parameter key). This is located on the printed circuit board inside the meter. The meter cover must be removed in order to press this key. The signalizing of parametering status is indicated by blinking of the communication symbol on the display. The parametering status is ended either by · · 24 hour uninterrupted meter operation the command ,,switch off parameterization status".

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5. Meter operation

5.1. Operating and display

For the operation of the devices a menu is used for the information which is to be displayed. For the operation of this, the basics are as follows: Call-up sensor/button*: · ,,short" operation (toperation< 2 s) switches over to the next value in the list or menu option · ,,long" operation (2 s toperation < 5 s) activates either the menu option which was just represented or causes the pre-values to be skipped over · ,,longest" operation (toperation 5 s) takes you back from each operation condition back to the operation mode (scrolling display) Reset sensor/button*: A ,,short" pressing in the set mode initiates the activation of the first digit of the selected value and switches through the lists. A ,,long" pressing always initiates a resetting, apart from in the set mode and in the display test.

* Depending on the model also designed as an optical sensor or mechanical push button.

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5.1.1. Principle mode of actions of the operation and display

Operating display (scrolling)

Activate [A]-sensor/button short or long

Display test

Activate [A]-sensor/button short or long

Activate [R]-sensor/button short or long

Call-up mode Menu [A]- button

Call-up mode Menu [R]- button

Figure 8: Depiction of the changing of the display modes

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Call-up mode Menu [A]- button

Display Menu option "Std-dAtA"

Activate [A]-sensor/button short

Activate [A]-sensor/ button long

Call-up mode Standard

Activate [A]-sensor/ button long

Display Menu option "P.01"

Activate [A]-sensor/button short

Call-up mode Load profile

Display Menu option "P.99"

Activate [A]-sensor/button short

Activate [A]-sensor/ button long

Certification relevant logbook

Call-up mode

Display end of the list "End"

Activate [A]-sensor/button short

Figure 9: Depiction of the call-up: menu A-button

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Call-up mode Standard

Find the first value from the standard data list

Switch over to the next value/ historical value

Display value/ historical value

Switch over to the next value, skips a historical value

Activate [A]-sensor/ button short

no

Last value? yes

no

Activate [A]-sensor/ button long

"End"

Activate [A]-sensor/ button short

Figure 10: Depiction of the single call-up

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Call-up mode Load profile

Find date of the youngest daily block

Switch over to date of the last day

Activate [A]-sensor/ button short

Display date

Activate [A]-sensor/ button long

Find data of the first registration period of the selcted date

Switch over to the next registration period

Display data of the registration period

Activate [A]-sensor/ button short

Activate [A]-sensor/ button long

Figure 11: Depiction of the load profile call-up

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Call-up mode

Certification relevant logbook

Find date of the youngest entry

Display date

Display date of the entry

Activate [A]-sensor/button short

no

Last value of the entry?

yes

Switch over to the next entry

no

Last entry

ja

"End"

Figure 12: Depiction of the call-up: Calibration relevant logbook

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Call-up mode Menu [R]- button

Display Menu option "SEt"

Avtivate A]-sensor/ button long

Set mode

Avtivate A]-sensor/button short

Display Menu option "InFO-dAtA"

Avtivate A]-sensor/ button long

Avtivate A]-sensor/button short

Info mode

Display Menu option "tESt"

[A]-Sensor/Taste kurz

Avtivate A]-sensor/button short

Test mode

Display end of the list "End"

Avtivate A]-sensor/button short

Figure 13: Depiction of the call-up: menu R-button

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Set mode

Find the first value of the set mode

Switch over to the next value

no Last value? yes Activate [A]-sensor/ button short or long

Display the value to be set

Activate [R]-sensor/ button short or long

Display end of the list "End"

Activate [A]-sensor/ button short or long

First digit flashes

Increase digit by 1

Activate [A]-sensor/ button short or long

Display value with flashing digit

Next digit flashes

Activate [R]-sensor/ button short or long

Last Digit?

no

yes

All digits flash

Activate [A]-sensor/ button short or long

Activate [R]-sensor/ button short or long

Maintain old value

Plausibility OK?

Save new value?

Figure 14: Depiction of the set mode

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Call-up mode Info

Find the first value from the info list

Switch over to the next value/ historical value

Display value/ historical value

Switch over to the next value, skips a historical value

Activate [A]-sensor/ button short

no

Last value? yes

no

Activate [A]-sensor/ button long

"End"

Activate [A]-sensor/ button short

Figure 15: Depiction of the info list

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Test mode

Find the first value of the test data list

Switch over to the next test value

Display test value

Activate [A]-sensor/ button short or long

Figure 16: Depiction of the test mode

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5.1.2. Display and control For the display of the data/values there are the following different operation modes: · Operation display mode · Display test · Call-up mode ,,menu call-up button" · Call-up mode standard (,,Std-dAtA" display of all the register contents in the list) · Call-up mode load profile (,,P.01" display of load profile values) · Call-up mode calibration relevant logbook (,,P.99" Display of the changes of the output impulse constants and the LED-impulse constants) · Call-up mode ,,Menu reset button" · Set mode (,,SEt" editing of settable variables) · Call-up mode info (,,InFO-dAtA" shortened display of the billing data) · High resolution mode for testing purposes (,,tESt" test mode). Furthermore the following principles apply: The control of the display and the editing of settable values takes place by means of ,,one-handed operation", that means several operating elements do not have to be operated simultaneously. The initial state of the display is the operation display. A change-over from the operation display to the ,,menu [A]- button" (that means call-up mode standard or call-up mode load profile) or to the ,,menu option [R]- button" (that means set mode or test mode) is only possible via the ,,displaytest". The return from call-up-, load-, set-, info- or test mode into the operation display occurs automatically when no operating element was activated or when the call-up sensor/button has been activated for longer than 5s within the fixed time of 2 measuring period lengths (in general 30 minutes, apart from in the test mode where this takes place first after 24 hours). The end of a list is marked in the display with ,,End" in the value area. For the call-up sensor/button the following applies: In the call-up mode ,,Menu": · Switch over to the next value in the list (operation < 2 s) · Selection of the value in the list (operation 2 s) In the call-up mode ,,Standard"/,,Info": · Switch over to the next value/pre-value (operation < 2 s) · Skipping of the displayed pre-values (operation 2s). In the call up mode ,,Load profile": · Switch over to the next day block (operation < 2s) · Selection of the displayed day block (operation 2s) and in the day block: · Switch over to the next available registering period (operation < 2s) · Return to the previous selected day block (operation 2s). In the call up mode ,,Calibration relevant logbook": · Switch over to the next entry/value (operation < 2s)

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In the ,,Set mode": the displayed conduct as with the Figure 14 applies. In the ,,Test mode": · Switch over to the next test value (operation < 2 s) · Skipping of the displayed pre-values (operation 2s). Since values can also be edited in the set mode via the data interfaces, the interface(s) and operational element are mutually interlocked (logically). The sequence of the represented values (operation display and call-up mode) takes place following the allocation of the OBIS code. As a criteria for the order, the OBIS code is read from left to right starting from the left with the variable ,,Error" (OBIS code ,,F.F"), to which the other measuring variables are linked, sorted according to their OBIS codes in an increasing sequence. Deviating from this, the display of pre-values always occurs in the sequence from the newest to the oldest value.

5.1.2.1. Operation display The operation display is the standard display. Here the data is displayed at intervals of 10 seconds one after the other (scrolling). Operation display: List (Example) OBIS x.4.x x.6.x x.8.x Description Current time in the MP / current average value of the power Maximum of the power Energy

Table 10: Operation display (Example)

5.1.2.2. Display test Through operating the call-up sensor/button (Operation < 5 s ) the operation display is switched over to the display test (see Figure 8) and all activated segments/sections of the display are shown. After this you can switch: · through operating the call-up sensor/button in the call-up mode ,,Menu Abutton" or · through operating the reset sensor/button in the call up mode ,,Menu R-button"

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5.1.2.3. Call-up mode Menu A-button The first displayed option in the menu list is the menu option single call-up ,,StddAtA" (see Figure 9). Every further short operation of the call-up sensor/button leads to the display of further possible existing menu options, e.g. the load ,,P.01". For the purpose of the selection of the menu options the call-up sensor/button is pressed at least two times. The last display in the call-up list is the list endmarking ,,End" shown in the value area of the display. If the time limit of two measuring periods (or rather 2 RP-lengths, in case no MP is present; in general 30 min) is reached after the last pressing of the button or if the call-up sensor/button is activated for at least 5 sec's then it is automatically switched back to the operation display.

5.1.2.4. Call-up mode standard (Menu option ,,Std-dAtA") The first displayed option of the menu option ,,Std-dAtA" is the code and the content of the error code. Every further operation of the call-up sensor/button leads to the display of further data. For the purpose of a faster data call-up the pre-values can be skipped and the pre-value of the following value displayed. This is achieved by operating the call-up sensor/button ,,long" (Figure 10). If the time limit of 2 measuring period lengths (or rather 2 RP-Lengths in case no MP exists, in general 30 min) is reached after the last press of the button or if the call-up sensor/button is activated for at least 5 seconds then the operation display is automatically switched back. With this it is guaranteed that the course of a complete measuring period of the meter can be observed without any interruptions. The last display in the call-up list is the list end-marking, ,,End" shown in the value area of the display.

5.1.2.5. Call-up mode load profile (Menu option ,,P.01") Date selection of the day block The first displayed value of the menu option ,,P.01" is the date of the newest available day block in the load profile. Every further short operating of the call-up sensor/button leads to the chronological display of the load profiles from the previously available day (see Figure 11). If the call-up sensor/button is activated ,,long" then for the exact selection of the day block which is to be selected the registering period is shown in an increasing order. If the time limit of 2 registration periods is reached after the last press of the button or if the call-up sensor/button is activated for at least 5 seconds then the operation display is automatically switched back into the operation display. The last display in the call-up list is the list endmarking ,,End" shown in the value area of the display and appears in the display after the oldest available date of a day block.

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Load profile values of the selected day The display of the selected day block begins with the representation of oldest load profile value saved on this day (the values saved at 0.00 o'clock are assigned to the previous day) beginning with the lowest read OBIS code from left to right. Every further short operation of the call-up sensor/button displays the next available measured value from the same recording period. When all the available measured values of the period have been displayed the data from the following available registration period follows (see Figure 11). The last option in the call-up list is the list end-marking, (,,End") showed in the value area of the display and which appears after the last profile value from the selected day. If the call-up sensor/button is activated for at least 2 seconds then it is switched back to the date list from the previously selected day block. If the time limit of 2 registration periods is reached after the last press of the button or if the call up sensor/button is activated for at least 5 sec's then it is automatically switched over to the operation display.

5.1.2.6. Call-up mode, certification relevant logbook (Menu option ,,P.99") In the certification relevant logbook 46 entries can be saved. When 46 entries have been reached then the oldest entry is then overwritten. The first displayed value of the certification relevant logbook is the date of the entry. Every further operation of the call-up sensor/button leads to the display of further data (see Figure 14 in the following sequence: time, status entry, OBIS-code, (0.3.0 for changing the LEDconstants, 0.3.3 for changing the output impulse constants for active power and 0.3.4 for changing the output impulse constants for reactive power). After, the old value of the changed constant appears and then the new value. If in the certification relevant logbook further entries exist then, with a further pressing of the callup sensor/button the next log book entry is shown. Status entry when deleting all entries: 2000 If the time limit of 2 measuring period lengths is reached after the last press of the button (e.g. 2 RP-Lengths, in case there is no MP; in general 30 min) or if the call up button is pressed for at least 5 s then the operational display is automatically switched back. This way it is guaranteed that on the device at least one uninterrupted run of a complete measuring period can be observed. The last value in the certification relevant logbook is the list end code which is marked as ,,End" in the display.

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LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

5.1.2.7. Call-up mode menu R-button For operating the R-button the seal of the button, or rather the slide must be broken. This may only be carried out by authorized personnal. The first displayed value of the menu list is the menu option set mode with the name ,,SEt" (see Figure 13). Every further operation of the call-up sensor/button leads to the display of further existing menu options, e.g. the high resolution mode for testing purposes with the name ,,tESt". For the purpose of the selection of the menu option the call-up sensor/button is activated for at least 2 sec's. The last display in the call-up list is the list end-marking, ,,End" shown in the value area of the display. If the time limit of 2 registration periods is reached after the last press of the button or if the call-up sensor/button is activated for at least 5 sec's then it is automatically switched back to the operation display.

5.1.2.8. Set mode (menu option ,,SEt") In the set mode, settable values are entered or changed via one of the reset sensor/button and/or call-up sensor/button as well as via one of the data interfaces. There is a mutual interlocking of the different set possibilities. To set the values via one of the data interfaces, formatted commands in accordance with IEC 6205621 are used. Values with several digits which can be edited via the sensors/ buttons are edited with the sensors/buttons starting from the left (first) digit.

Important information for setting the date and clock: When setting the clock you must first set the date and then the time. Otherwise it can be the case, that with the transition from summer to winter time (and the reverse) the clock time will be shifted by ± 1 hour.

5.1.2.9. Call-up mode info (Menu option ,,InFO-dAtA") The info list is a shortened display of the billing data for the manual data read-out. Every further operation of the call-up sensor/button leads to the display of further data. For the purpose of a faster data call-up the pre-values can be skipped and the pre-value of the following value displayed. This is achieved by operating the call-up sensor/button ,,long" (siehe Figure 15). If the time limit of 2 measuring period lengths (or rather 2 RP-Lengths in case no MP exists, in general 30 min) is reached after the last press of the button or if the call-up sensor/button is activated for at least 5 seconds then the operation display is automatically switched back. With this it is guaranteed that the course of a complete measuring period of the meter can be observed without any interruptions. The last display in the call-up list is the list end-marking, ,,End" shown in the value area of the display.

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LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

5.1.2.10. Test mode (Menu option ,,tESt") In the high resolution mode ,,tESt" for test purposes the same data appears in the display as in the operation display however this does not scroll and also with the difference that the energy register(s) is displayed in high resolution. Every operation of the call-up sensor/button leads to the display of further data (see Figure 16). If the call-up sensor/button is activated for at least 5 seconds then it automatically switches over into the operation display. The test mode can also be activated and deactivated via the data interfaces. The test mode is deactivated provided that the initialisation telegram (see for this ZVEI-Empfehlung ,,Prüfung elektronischer Zähler über die Datenschnittstelle = ZVEI-recommendation ,,testing of electronic meters via the data interface") is sent with the measuring period default via the data interfaces or when a time period of 24 hours elapses since the activation of the mode.

5.1.2.11. Parameter mode The meter can only be altered in the calibration mode (certification seal broken) via the data interfaces. If the meter is in the parameter mode, then this state is specially marked on the display.

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6. Circuit diagrams (examples)

In the following you find some circuit diagrams as examples. With the connection of a meter is very important to note the relevant circuit diagram which can be found on the meters terminal cover and also in the delivery documents.

6.1. Transformer-operated meter for three phase four-wire systems

for connection to the current and voltage transformers 3x58/100V 3x63/110V 1(6)A, 5A, 1A 1(6)A, 5A, 1A

Example of one design variant with: 1 input S0 4 outputs Opto-MOSFET electrical data interface RS232 optical interface LLS

INPUT OUTPUTS

S0 in

123456789

u u u X X X X X X U U U L1 L2 L3 N HR: MOSFET (max. 250V AC/DC; 100mA) k l k l k l LLS: optical fibre interface K L K L K L

E9522

for connection to a current transformer 3x220/380V 3x230/400V 1(6)A, 5A, 1A 1(6)A, 5A, 1A

Example of one design variant with: 1 input S0 4 outputs Opto-MOSFET electrical data interface RS232 optical interface LLS

INPUT OUTPUTS

S0 in

123456789

HR: MOSFET (max. 250V AC/DC; 100mA) k l k l k l LLS: optical fibre interface K L L1 L2 L3 N K L K L

E9512

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LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

6.2. Transformer-operated meter for three phase three-wire systems

for connection to current and voltage transformers 3x100V 3x110V 1(6)A, 5A, 1A 1(6)A, 5A, 1A

Example of a design variant with: 1 input S0 4 outputs Opto-MOSFET electrical data interface RS232 optical interface LLS

INPUT OUTPUTS

S0 in

123456789

u u u x x x X X X U U U L1 L2 L3 HR: MOSFET (max. 250V AC/DC; 100mA) k l k l LLS: optical fibre interface K L K L

E8522

6.3. Three phase meter for direct connection in four-wire systems

Example of a design variant with: electrical data interface RS232 optical interface LLS 3x220/380V 3x230/400V 3x230/400V 10(60)A 10(60)A 10(100)A

OUTPUTS

E9502

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LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

7. Housing

Dimensions according to DIN 43 857, Part 2 for measuring transformer meters and three-phase current meters for direct connection. The housing consists of the following components:

7.1. Base plate

Base plate is made of grey polycarbonate with upper hanging eye-hooks and lower hanging eye-hooks.

7.2. Meter cover

The display window is transparent and the remaining cover surface has an eroded structure. The meter cover is hung at the top of the base plate and fastened at the bottom with two sealing screws. The contact for the readout head is found in the transparent part of the cover window. A recessed magnetic ring guarantees errorfree coupling between the meter and the readout head. On the front side of transformer meters there is a device for the fixing of a sealable transformer label.

Figure 17: Dimensions

7.3. Terminal block for transformer-operated meter

Bore diameter 49

LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

current and voltage terminals auxiliary terminals

4.6 mm 3.0 mm

7.4. Terminal block for direct connection 60A

Bore diameter current terminals voltage terminal and auxiliary terminals 6.5 mm 3.2 mm

7.5. Terminal block for direct connection 100A

Bore diameter current terminals 50

LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

9.5 mm

voltage terminals auxiliary terminals

(4.5 x 4.5) mm 3.2 mm

Tips for the cable diameter: Bore diameter of the terminals 9.5 mm 6.5 mm 4.6 mm 3.2 mm 3.0 mm

Table 11: Cable diameter

Suitable for cable diameter up to (incl. connector sleeve): 70 mm² 33 mm² 16 mm² 7 mm² 7 mm²

8. Ordering code

Please contact EMH`s local representative or EMH directly.

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9. Software tools

For the following software tools the PC should fulfil at least the following requirements: Processor: RAM: Available hard disk memory: Operating system: Screen resolution: Accessories: Intel Pentium, 100 MHz or higher 32 MB RAM 10 MB for each program Microsoft Windows 95/98/2000, NT4.0 or XP optimal 800x600 Pixel with 65.000 colours Optical communication head OKK with DSub9connector (RS232) for connection to the D0interface or RS232, RS485, CL0 for communication with the meter

9.1. EMH-COMBI-MASTER 2000

The meter communication program EMH-COMBI-MASTER 2000 is a PC program for communication between a PC and meters from the series LZQJ from EMH Elektrizitätszähler GmbH & Co KG. The most important functions of the program are: · · · · · · 52

LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

Readout of meter data (table 1, table 2, service table, load profile, logbook) Graphic load profile display Load profile export Transmission of parameterization- and set files (option) Remote meter readout (option) Set clock (option)

9.2. COMBI-TOOL

The operational and user interface COMBI-TOOL enables the more advanced user of EMH Electricity meters to configure and read out meters from the series LZQJ. Actions to the following topics can be carried out: · · · · · · · · Meter identification Interface settings Reset /Pre-value formation Time control Tariff configuration (seasons, holidays, tariff) Ripple control qualities Display- and read out lists Data read out

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9.3. TRANSFORMER-TOOL

The software TRANSFORMER-TOOL is used for the parameterization of transformer meters from the series LZQJ from EMH Elektrizitätszähler GmbH & Co KG. Communication with the meter takes place via a serial interface in accordance with IEC 62056-21(former IEC 1107) mode C. A fixed baud rate is also supported. The most important functions of the program are: · Configuration of meter parameters: U-transformer, I-transformer, impulse duration, impulse constants, units and digits left/right of the decimal point · Plausibility test · Meter configuration online: read out, parameterization, delete energy registers, switch off PAR-Status · Creation and printing of transformer labels

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LZQJ-PHB-E-12 © 2004 EMH Elektrizitätszähler GmbH & Co KG

Information

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