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HighPROTEC

MRA4

PROTECTION TECHNOLOGy MADE SIMPLE PROTECTION RELAy FOR FEEDER, GRID AND GENERATOR APPLICATIONS

Applic Ation

The MRA4 is a protection relay which uses the latest Dual-CoreProcessor Technology to provide precise and reliable protective functions and is very easy to operate. Its various protective functions are specifically tailored to the protection of incoming and outgoing feeders in MV systems. It also can be used for grid and generator protection.

All inclusive:

All protection features without extra charge Parameter setting and evaluation software Disturbance record analysis software

t wo stAges residuAl voltAge protec tion

VE>

six stAges phAse overcurrent protec tion

Directional and non-directional overcurrent/short-circuit protection Tripping characteristics: DEFT ANSI: NINV, VINV, EINV IEC: NINV, VINV, LINV, EINV Thermal Flat, IT, I2T, I4T Voltage controlled and restraint

six stAges voltAge Asymmetry supervision

Under- and overvoltage in positive phase sequence system, overvoltage in negative phase sequence system

comprehensive Frequenc y protec tion pAck Age

Each of the six stages can be used as: f< or f> (over- and underfrequency supervision) df/dt (ROCOF) (f< and df/dt) or (f> and df/dt) combination of over-, under- and rate of change of frequency (ROCOF) (f< and DF/DT) or (f> and DF/DT) combination of over-, underand increase of frequency Delta Phi (Vector surge)

disturbAnce recorder

120 s non volatile, 32 samples per cycles

Four stAges eArth FAult protec tion

Directional and non-directional earth fault protection Tripping characteristic: DEFT ANSI: NINV, VINV, EINV IEC: NINV, VINV, LINV, EINV Thermal Flat, IT, I2T, I4T Voltage controlled and restraint

AdditionAl highlights

Automatic reclosing Inrush Thermal replica Four stages external protection Plausibility checks Adaptive parameter sets Energy counters Status display Comprehensive measured values and statistics Masking of unused functions

power protec tion pAck Age

Six stages power protection Each can be used as P>, P<, Pr, Q>, Q<, Qr, S>, S< Two stages power factor (PF)

q(v) protec tion

Undervoltage directional reactive power protection with reclosing disengaging

t wo stAges unbAlAnced loAd protec tion

Supervision by definite time or tripping characteristic

pAr Ameter set ting support by soFt wAre

Copy parameter sets Compare parameter sets Setting files are up and down convertible (across versions)

supervision

Current transformer supervision Voltage transformer supervision Circuit breaker failure protection Trip circuit supervision Cold load pickup Switch onto fault Breaker Wear

six stAges voltAge protec tion

Under- and overvoltage Programmable undervoltage time depending characteristic

MRA4

PROTECTION RELAy FOR FEEDER, GRID AND GENERATOR APPLICATIONS

Fun c tionAl over vie w

elements protective Functions I, time overcurrent and short circuit protection, all stages can be configured for directional or non-directional supervision. Tremendous reset options (instantaneous, definite time, reset characteristics according to IEC and ANSI). Voltage controlled overcurrent protection by means of adaptive parameters. Voltage dependent overcurrent protection. Negative phase sequence overcurrent protection I2>, unbalanced load protection with evaluation of the negative phase sequence currents IB, overload protection with thermal replica and separate pick-up values for alarm and trip functions IH2/In, inrush detection with evaluation of the 2nd harmonic IG, earth overcurrent and short circuit protection, all stages can be configured for directional or non-directional supervision. Tremendous reset options (instantaneous, definite time, reset characteristics according to IEC and ANSI). Voltage controlled earth overcurrent protection by means of adaptive parameters. Voltage dependent earth overcurrent protection. V<, V>, V(t)<, under- and overvoltage protection, time dependent undervoltage protection Voltage asymmetry supervision (V012) V1, under and overvoltage in positive phase sequence system V2, overvoltage in negative phase sequence system Each of the six frequency protection stages can be used as: f< or f> (over- and under frequency supervision) df/dt rate of change of frequency (ROCOF) (f< and df/dt) or (f> and df/dt) combination of over-, under- and rate of change of frequency (ROCOF) (f< and DF/DT) or (f> and DF/DT) combination of over-, under- and increase of frequency Delta Phi (Vector surge) VE, residual voltage protection AR, automatic reclosing ExP, External alarm and trip functions PQS, Power protection PF, Power factor Q(V) Protection (undervolt. dep. directional reactive power protection with reclosing disengaging) supervision Functions CBF, circuit breaker failure protection TCS, trip circuit supervision VTS, voltage transformer supervision by comparing phase and residual voltages VTS, fuse failure protection via digital input CTS, current transformer supervision CLPU, cold load pickup SOTF, switch onto fault Bwear, Breaker Wear Non volatile event recorder up to 120 s with 32 samples per cycles 1 1 1 1 1 1 1 2 50BF 74TC 60FL 60FL 60L 2 1 4 6 2 32, 37 55 2 1 1 4 4 4 6 6 6 81U/O 81R 6 50P, 51P, 67P Ansi

51C 51V 51Q 46 49 Inrush 50N, 51N, 67N

51NV 51NC 27, 59 47

78 59N 79

www.woodward.com

Fun c tionAl over vie w in Ansi Form

MRA4

Measured and calculated values 79 3 74 TC 46 37 50 BF 50P 51P 51Q Q(U) 67P 51V

delta phi, theta , IH2,

V, VE, V012, I, IG, f,

Inrush

CLPU

SOTF

60L

49

IGH2, I012, P, Q, S, PF, cos phi, W current and voltage phasors Fault recorder Event recorder

1

27

59

67N

32

55

4

59N

47

78

81 U/O

60 FL

81R

50N

51N

51R

*

51C*

Disturbance recorder IRIG-B00X

* = Via Adaptive Parameters

connec tions

MRA4

PROTECTION RELAy FOR FEEDER, GRID AND GENERATOR APPLICATIONS

order Form mr A4

directional Feeder protection digital inputs 8 16 binary output relays 7 13 housing B2 B2 A D 0 A B mrA4

contAc t:

north & central America Phone: +1 970 498 3634 E-mail: [email protected]

south America Phone: +55 11 3034 1120 E-mail: [email protected]

hardware variant 2 Standard housing and mounting Door mounting Door mounting 19" (flush mounting) communication protocol Without protocol RS485/terminals, Modbus RTU, IEC60870-5-103 Ethernet (RJ45), Modbus TCP, IEC61850 * prepared (Hardware/Interface) Optic fiber, Profibus DP RS485/D-SUB, Profibus DP Optic fiber, Modbus RTU, IEC60870-5-103 RS485/D-SUB, Modbus RTU, IEC60870-5-103 Available menu languages English/German/Russian

All devices are equipped with IRIG-B interface. The parameterizing and disturbance analyzing software is included in delivery of HighPROTEC devices.

* For information about additional cost for the software update tool IEC61850 per device, please contact our sales team. The devices can be updated via device front interface (RS232) and PC locally. Please ask for availability.

europe Phone: +49 2152 145-319 E-mail: [email protected]

A B C D E F G

middle east & Africa Phone: +971 2 6275185 E-mail: [email protected]

russia Phone: +7 960 272 4205 E-mail: [email protected]

china Phone: +86 512 8818 5515 E-mail: [email protected]

current inputs voltage inputs digital inputs power supply terminals mounting type of enclosure dimensions of housing weight (max. components)

4 (1 A and 5 A) with automatic short circuiters 4 (0­ 800 V) Switching thresholds adjustable via software Wide range power supply All terminals plug type Door mounting IP54 212.7 mm x 173 mm x 209 mm (W x H x D) approx. 4 kg

india Phone: +91 22 2561 2256 E-mail: [email protected]

AseAn & oceania Phone: +49 711 78954-511 E-mail: [email protected]

TM

Enabling Electrical Power Systems Integration

© Woodward All Rights Reserved | 03.2010

DOK_FLy_MRA4_03.10_EN

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