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High density of paper cylinder is used in internal diameter side of the winding close to the core, which results in a structure without clearance between the core and the winding that strengthens the strength of withstanding short-circuit impulse of winding. Specification of 220kV Power Transformer(Two-Winding)

Rated voltage (kV) Type SFP10-240 MVA/220 kV SFP10-370 MVA/220 kV SFP8-380 MVA/220 kV SFP9-420 MVA/220 kV 242 242 242 242

HP JN

H.V 2 2 2.5% 2.5% 2.5% 2 2.5%

L.V 15.75 20 18 23

Connecting symbol YNd11 YNd11 YNd11 YNd11

No-load Load Impedance Total weight loss (kW) loss (kW) % (t) 125 165 178 190 535 670 720 840 14 14 16 14 199 247 230 257

Specification of 220kV Power Transformer(Three-Winding)

Rated voltage (kV) Type SFPSZ9-120 MVA/220 kV OSFPS9-120 MVA/220 kV OSFPSZ9-120 MVA/220 kV SFPS9-150 MVA/220 kV SFPSZ9-150 MVA/220 kV SFPSZ-K-150 MVA/220 kV SFSZ-K-180 MVA/220 kV SFPSZ9-180 MVA/220 kV OSFPSZ9-180 MVA/220 kV OSFPSZ-240 MVA/275 kV SFPSZ-K-250 MVA/220 kV 220 220 220 220 220 220 220 220 220 220 H.V 8 2 8 2 8 8 8 8 8 275 8 1.25% 1.25% 2.5% 1.25% 2.5% 1.25% 1.25% 1.25% 1.25% 1.25% 132 M.V 121 121 121 121 121 121 121 121 121 12 115 1.25% L.V 10.5 38.5 38.5 38.5 10.5 11 10.5 10.5 10.5 38.5 10.5 Connecting No-load Load loss symbol loss (kW) (kW) YNyn0d11 YNa0d11 YNa0d11 YNa0d11 YNyn0d11 YNyn0d11 YNyn0d11 YNyn0d11 YNa0d11 YNa0d11 YNyn0d11 95 50 55 100 105 85 82 130 70 54.95 116 420 285 300 495 500 580 595 550 360 462.4 850 Impedance % H-M H-L Total weight M-L (t) 166 128 125 178 185 200 249 210 159 258 272

13.85 23.27 7.91 8.2 28.8 17.8

8.52 31.41 21.17 13.3 22.9 7.5

13.6 23.33 7.85 15 13 45 44 28 31 7.92 23.9

12.93 22.6 8.2 34.8

15.56 18.34 35.21 18 44 26

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220kV COMBINED POWER TRANSFORMER

Structure characteristics

The separate parts of a combined transformer share a common set of cooling system, conservator and piping system. For on-load regulating transformer, there is only one set of on-load regulating mechanism, the occupied area of the transformer on site is only slightly larger than that of the traditional transformer. In delta connection, LV leads of the combined transformer, firstly connected to be a delta type in corrugated lead pipe on the top of the tank, are brought out from LV. bushing then. Thus compared with the method before, this way to connect the leads can save 50% of workload and assembly period on site. The tertiary leads of the step-down transformer can be directly brought out to connect with the overhead line of the substation and be connected to form delta type Specification of 220kV Combined Power Transformer(Two-Winding)

Type SSP9-X-75 MVA/220 kV Three-phase two-winding combined transformer Ratio of voltage(kV) Connection group Winding combination No-load current(%) No-load loss(kW) On-load loss(kW) lmpedance(%) Weight of active part(kg) Transport weight (kg) Transport dimension (L W H mm) 3 242 2 2.5%/10.5 SSP10-X-130 MVA/220 kV SSP9-X-110 MVA/220 kV Three-phase two-winding Three-phase two-winding combined transformer 242 2 2.5%/13.8 combined transformer 242 2 2.5%/13.8

YNd11 H--L 0.5 53 226 13.32 28290 3

YNd11 H--L 0.4 90 362.5 13.245 37500 3

YNd11 H--L 0.5 82 327.3 13.4 31000

3 35000 (filling with nitrogen) 3300 2480 2950

3 44500 (filling with nitrogen) 3530 2840 3380

3 38000 (filling with nitrogen) 3253 2680 3200

1. OSFPSZ8-X-120 MVA/220kV combined transformer operating in Gejiu,Yunnan 2. SFPS8-X-120 MVA/220kV three-winding combined transformer,Hubei 3. SFPSZ8-X-120 MVA/220kV three-phase three-winding on-load combined auto-transformer,Yunnan 4. SSP9-X-75 MVA/220kV three-phase two-winding combined transformer 1

outside. Such simple structure, resulting in a convenient assembly, makes it easy to carry out a splitphase test and to supervise the condition of the transformer. Corrugated pipe is used to connect oil piping of three single-phase transformer, which is installed on the special steel pedestal supplied by XD. Convenient installation can also avoid the relative displacement caused by the difference of the property of the construction on site. The structure of single-phase three-limb core makes flux distribution uniform, thus substantially decreases the flux leakage, help avoid partial over-heat, and strengthen the ability of withstanding short circuit of the transformer. Together with other special technical measures, the technology to stack core without upper yoke effectively lower the noise, which of the transformer with blowers normally is lower than 70db and which of the main body is lower than 65db. It is very important for the substation in the mountain area or the boost substation inside the cavity of the hydroelectric power station to have a low noise. Specification of 220kV Combined Power Transformer (Three-Winding)

Type SFPS8-X-120 MVA/220 kV OSFPSZ8-X-120 MVA/220 kV SFPSZ8-X-120 MVA/220 kV SFPS9-H-150 MVA/220 kV Three-phase three-winding Three-phase three-winding Three-phase three-winding Three-phase three-winding combined transformer Ratio ofof voltage Ratio voltage(kV) Connection group Connection group Winding combination Winding combination No-load current(%) No-load current No-load loss(kW) No-load loss On-load loss(kW) On-load loss lmpedance(%) lmpedance Weight of active part Weightof active part(kg) Transport weight Transportweight Kg (kg) Transport dimension Transport dimension (L (L W W H H) mm) H--M 0.3 100 480 13.5 3 242 2 2.5%/121/38.5 combined auto-transformer 220 8 1.25%/115/37 combined transformer 220 8 1.25%/115/35 combined transformer 220 8 1.5%/121/10.5

YNyn0d11 H--L 0.3 100 150 23 33630 M--L 0.3 100 100 8 H--M 0.5 60 320 9

YNyn0d11 H--L 0.5 60 240 32 3 21680 M--L 0.5 60 250 20 H--M 0.23 105 470.7 13.91

YNyn0d11 H--L 0.23 105 140.2 23.43 3 36600 M--L 0.23 105 98.24 7.9 H--M 0.3 110 498 14.47

YNyn0d11 H--L 0.3 110 167 24.65 3 43800 M--L 0.3 110 116 7.9

3 38430 (filling with nitrogen) 3670 2980 3490

3 28380 (filling with nitrogen) 4895 2960 3330

3 44570 (filling with nitrogen) 3800 3210 3480

3 51860+52550 (filling with nitrogen) 4300 3350 3575

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110kV POWER TRANSFORMER

Based on the digestion and absorption of the importing technique, XD designs and manufactures series of 110kV power transformers with the characters of low loss, low noise, good ability of withstanding short-circuit and high operating reliability. New series of 110kV power transformers by XD have various types of structures that will be suitable for the requirements in different installing environment, such as city network, agriculture network, indoor and outdoor, etc. Since 1992, XD has provided the customers nearly 700 units of new series of 110kV products among which 300units have been exported to Malaysia, Thailand, Indonesia, Indian, China Hong Kong special administrative region and so on.

1. SFSZ30MVA/132kV power transformer with low losses operating in Malaysia 2. 200MVA/110kV power transformer 3. SFZ10-50MVA/132kV power transformer with high impedance for CLP, Hong Kong 1

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Specification of 110kV Power Transformer(Double-Winding)

Rated voltage (kV) Type S10-8 SZ9-10 SZ9-16 SF9-20 SF9-20 SFZ9-20 SFZ9-20 SFZ9-25 SFZ9-31.5 SZ9-40 SFZ10-40 SZ10-50 SFZ10-50 SFZ10-50 SF9-63 SFZ9-63 SF9-75 SF10-75 SFP9-95 SF10-130 SFP10-150 SFP9-170 SFP10-180 SFP10-200 M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V MVA/110 kV M VA / 1 1 0 k V MVA/110 kV M VA / 1 1 0 k V MVA/110 kV MVA/132 kV M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V M VA / 1 1 0 k V MVA/110 kV MVA/110 kV MVA/110 kV MVA/110 kV MVA/110 kV 110 110 110 110 121 110 110 110 110 110 110 110 110 132JN 121 110 115 121 121 121 121 121 121 121 2 8 2 2 2 2 2 5 2 2

HP

H.V 2 8 8 2 2 8 8 8 8 8 8 8 8 2.5% 1.25% 1.25% 2.5% 2.5% 1.25% 1.5% 1.25% 1.25% 1.25% 1.25% 1.25% 1.25% 1.75% 2.5% 1.25% 2.5% 2.5% 2.5% 2.5% 2.5% 2.5% 2.5% 2.5%

L.V 6.3 6.3 6.3 6.3 35 10.5 11 6.3 11 10.5 10.5 10.5 10.5 11 6.3 10.5 10.5 10.5 10.5 10.5 10.5 15.75 15 15.75

Connecting symbol YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNyno YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11 YNd11

Noa-load loss (kW) 9.64 11.83 14.14 18.7 19 17.84 16.1 21.2 22.1 25.7 26.6 24.1 30.7 21.3 38.3 33.8 50 40.5 52.5 63.3 85.38 81.02 77.4 110

Load loss (kW) 38 52.4 81.5 98.3 97.9 98.67 101.9 116.4 146.3 167.9 168.8 164.8 172.8 230.4 237.5 224.6 256.2 234 353.88 370 416.25 521.5 478 510

Impedance (%) 10.5 10.5 10.5 10.5 10.5 10.5 11 10.5 14 15 10.5 10.5 14.5 27 10.5 18 10.5 10.5 10.51 10.5 10.94 12.92 10.5 14

Total weight (t) 26.3 28.3 39 39.2 39.2 40.8 42.1 45.5 55 70.5 59 86.6 78.6 93 73.9 93 84 88.5 86 107 123 121.6 142 139

Specification of 110kV Power Transformer(Three-Winding)

Rated voltage (kV) Type SSZ10-5 MVA/110 kV 110 110 115 110 110 110 110 110 110 110 110 110 H.V 8 8 2 8 8 8 8 8 8 8 8 8 1.25% 1.25% 2.5% 1.25% 1.25% 1.25% 1.25% 1.25% 1.25% 1.25% 1.25% 1.25% 38.5 38.6 38.5 38.5 38.5 38.5 38.5 38.5 38.5 M.V 10.5 10.5 2 2 2 2 2 2 2 10.5 2 2 2.5% 2.5% 2.5% 2.5% 2.5% 2.5% 2.5% 2.5% 2.5% L.V 6.5 6 6.3 10.5 10.5 10.5 10.5 10.5 10.5 6.6 10.5 10.5 Connecting No-load Load loss symbol loss (kW) (kW) YNyn0d11 YNd11d11 YNyn0d11 YNyn0d11 YNyn0d11 YNyn0d11 YNyn0d11 YNyn0d11 YNyn0d11 YNyn0d11 YNd11d11 YNyn0d11 41 15 16.5 19.6 23.9 17.4 24.9 35 27.5 30.6 32.7 32.7 194 78.5 58.5 99 109.7 109.7 154.8 181 188 265 240 240 Impedance% H-M 10.5 10.5 10.5 10 10.5 10.5 10.5 10.5 10 16.6 10.5 10.5 H-L 17.5 18.3 18 17.5 18 18 18.2 18 18 29.5 18 18 Total weight M-L (t) 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 9.8 6.5 6.5 109 38.2 46.6 40.5 52.2 52.2 66.4 74 74 84.9 90 96

SFSZ9-12.5 MVA/110 kV SS10-16 MVA/110 kV

SFSZ9-16 MVA/110 kV SFSZ8-20 MVA/110 kV SFSZ10-20 MVA/110 kV SFSZ10-31.5 MVA/110 kV SFSZ9-40 MVA/110 kV SFSZ10-40 MVA/110 kV SFSZ9-50 MVA/110 kV SFSZ9-50 MVA/110 kV SFSZ9-50 MVA/110 kV

V NM

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