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110kV Oil-Immersed Power Transformer

1. High Reliability
2. High Efficiency & Energy Saving
3. Environmental Protection & Safety
4. Intelligent Interface
5.Customizable according to customer requirements.

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Product Introduction

  • The 110kV power transformer is a high-voltage, large-capacity transmission and distribution device designed in accordance with international IEC standards as well as Chinese GB and DL/T standards. The product adopts advanced design concepts, high-quality materials, and modern manufacturing processes to ensure safe, reliable, efficient, and environmentally friendly long-term operation within power grids.
  • It is mainly used in regional substations, large industrial and mining enterprises, and renewable energy power stations to perform voltage transformation, power transmission, and distribution.

110kV-10

Application Scenarios

  • Altitude: ≤ 1000 m
  • Installation: Outdoor
  • Ambient temperature:
  • Maximum: +40°C
  • Maximum daily average: +30°C
  • Maximum annual average: +20°C
  • Minimum: -25°C
  • Relative humidity: ≤ 90% (at 25°C)
  • Transformers for special operating conditions can be provided upon customer request.

110kV-11

Product Parameter

Table 1: Technical Parameters of 6300kVA–180000kVA Three-Phase Double-Winding Off-Circuit Tap-Changing Power Transformers (Energy Efficiency Level 1, 2, and 3 Loss Values)
Rated Capacity (kVA) Voltage Combination and Tap Range Connection Group No-Load Loss kW (Level 3) Load Loss kW (Level 3) Short-Circuit Impedance (%) No-Load Current (%) No-Load Loss kW (Level 2) Load Loss kW (Level 2) No-Load Loss kW (Level 1) Load Loss kW (Level 1)
High Voltage (kV) HV Tap Position Low Voltage (V)
6300

110

115

121

 ±2×2.5% 6.3
6.6
10.5
11		 YNd11 5.9 33 10.5 0.5 4.8 32 4.1 32
8000 7.1 40 0.5 5.8 38 4.9 38
10000 8.4 48 0.46 6.8 45 5.8 45
12500 9.9 56 0.46 8.1 53 6.8 53
16000 12 69 0.43 9.8 65.7 8.3 65.7
20000 14.1 84 0.43 11.4 79 9.7 79
25000 16.6 99 0.4 13.5 94 11.4 94
31500 19.7 117 0.38 16 111 13.5 111
40000 23.5 141 0.36 19.1 133 16.2 133
50000 28.2 166 0.34 22.9 158 19.4 158
63000 33.3 198 0.3 27 187 22.9 187
75000 13.8
15.75
18
21		 37.8 224 12~14 0.26 30.7 212 26 212
90000 43.5 258 0.24 35.4 245 29.9 245
120000 54.2 320 0.22 44.1 303 37.3 303
150000 64.1 379 0.19 52.1 359 44.1 359
180000 72 434 0.16 58.5 411 49.5 411
Notes: 1.The performance parameters listed in the table are based on national standards. Our company can provide customized products with specifications different from those in the table according to the actual operating conditions.
2.The overall dimensions and installation dimensions shall be subject to the drawings confirmed after contract signing.

 

Table 2: Technical Parameters of 6300kVA–63000kVA Three-Phase Three-Winding Off-Circuit Tap-Changing Power Transformers (Energy Efficiency Level 1, 2, and 3 Loss Values)
Rated Capacity (kVA) Voltage Combination and Tap Range Connection Group No-Load Loss kW (Level 3) Load Loss kW (Level 3) Short-Circuit Impedance (%) No-Load Current (%) No-Load Loss kW (Level 2) Load Loss kW (Level 2) No-Load Loss kW (Level 1) Load Loss kW (Level 1)
High Voltage (kV) Medium Voltage (kV) Low Voltage (V) Step-up Step-up
Rated Capacity (kVA)

110±2×2.5%

115±2×2.5%

121±2×2.5%

36

37

38.5

6.3

6.6

10.5

21

YHyn0d

1

 7.1 42

HV–MV:
17.5–18.5

HV–LV:
10.5

MV–LV:
6.5

HV–MV: 10.5

HV–LV: 17.5–19

MV–LV: 17.5–19

 0.53 5.8 40 4.9 40
8000 8.5 50 0.50 6.9 48 5.8 48
10000 10.1 59 0.47 8.2 56 6.9 56
12500 11.8 70 0.45 9.6 67 8.1 67
16000 14.3 86 0.42 11.6 81 9.8 81
20000 16.9 101 0.42 13.7 95 11.6 95
25000 19.7 120 0.38 16 113 13.5 113
31500 23.5 142 0.38 19.1 134 16.2 134
40000 27.8 170 0.35 22.6 161 19.1 161
50000 33.3 202 0.35 27 192 22.9 192
63000 39.4 243 0.32 32 230 27.1 230
Notes:
→ The medium voltage can be selected with values different from those listed in the table or provided with tapping options according to customer requirements.
→ The performance parameters listed in the table are based on national standards. Customized products with specifications different from those in the table can be provided according to actual operating conditions.
→ The overall and installation dimensions shall be subject to the drawings confirmed after contract signing.

 

Table 3: Technical Parameters of 6300kVA–63000kVA Three-Phase Double-Winding On-Load Tap-Changing Power Transformers (Energy Efficiency Level 1, 2, and 3 Loss Values)
Rated Capacity (kVA) Voltage Combination and Tap Range Connection Group No-Load Loss kW (Level 3) Load Loss kW (Level 3) Short-Circuit Impedance (%) No-Load Current (%) No-Load Loss kW (Level 2) Load Loss kW (Level 2) No-Load Loss kW (Level 1) Load Loss kW (Level 1)
High Voltage (kV) HV Tap Position Low Voltage (V)
6300 110

±4×1.25%

±6×1.25%

±8×1.25%

 6.3
6.6
10.5
21		 YNd11 6.4 33

10.5

10.5～18

 0.51 5.2 32 4.4 32
8000 7.7 40 0.51 6.2 38 5.3 38
0 9.0 48 0.47 7.3 45 6.2 45
2500 10.7 56 0.47 8.7 53 7.4 53
6000 12.9 69 0.44 10.5 66 8.9 66
20000 15.4 84 0.44 12.5 79 10.6 79
25000 18.2 99 0.41 14.8 94 12.5 94
31500 21.6 117 0.41 17.6 111 14.9 111
40000 25.8 148 0.37 21 140 17.8 140
50000 30.6 184 0.37 24.8 175 21.0 175
63000 36.3 220 0.34 29.5 209 25.0 209
Notes:
→ The performance parameters listed in the table are based on national standards. Customized products with specifications different from those in the table can be provided according to actual operating conditions.
→ The overall and installation dimensions shall be subject to the drawings confirmed after contract signing.

 

Table 4: Technical Parameters of 6300kVA–63000kVA Three-Phase Three-Winding On-Load Tap-Changing Power Transformers (Energy Efficiency Level 1, 2, and 3 Loss Values)
Rated Capacity (kVA) Voltage Combination and Tap Range Connection Group No-Load Loss kW (Level 3) Load Loss kW (Level 3) Short-Circuit Impedance (%) No-Load Current (%) No-Load Loss kW (Level 2) Load Loss kW (Level 2) No-Load Loss kW (Level 1) Load Loss kW (Level 1)
High Voltage (kV) HV Tap Position Low Voltage (V)
6300

110±4×1.256%

110±6×1.256%

110±8×1.256%

35

37

38.5

 6.3
6.6
10.5
21		 YNynDd11 7.7 42

HV–MV:
10.5

 HV–LV:
17.5～19

   MV–LV:
6.5

 0.61 6.2 40 5.3 40
8000 9.2 50 0.61 7.5 48 6.3 48
10000 10.9 59 0.57 8.8 56 7.5 56
12500 12.9 70 0.57 10.5 67 8.9 67
16000 15.4 86 0.54 12.5 81 10.6 81
20000 18.2 101 0.54 14.8 95 12.5 95
25000 21.6 120 0.50 17.6 113 14.9 113
31500 25.7 142 0.50 20.9 134 17.7 134
40000 30.8 170 0.46 25.0 161 21.2 161
50000 36.4 202 0.46 29.6 192 25.0 192
63000 43.3 243 0.42 35.2 230 29.8 230
Notes:
→ The medium voltage can be selected with values different from those listed in the table or provided with tapping options according to customer requirements.
→ The performance parameters listed in the table are based on national standards. Customized products with specifications different from those in the table can be provided according to actual operating conditions.

 

Table 5: Technical Parameters of 6300kVA–63000kVA Three-Phase Double-Winding Off-Circuit Tap-Changing Power Transformers with 35kV-Class Low Voltage (Energy Efficiency Level 1, 2, and 3 Loss Values)
Rated Capacity (kVA) Voltage Combination and Tap Range Connection Group No-Load Loss kW (Level 3) Load Loss kW (Level 3) Short-Circuit Impedance (%) No-Load Current (%) No-Load Loss kW (Level 2) Load Loss kW (Level 2) No-Load Loss kW (Level 1) Load Loss kW (Level 1)
High Voltage (kV) HV Tap Position Low Voltage (V)
6300

110

115

121

 ±2x2.5% 35 YNd11 6.4 35 10.5 0.54 5.2 33 4.4 33
8000 7.7 42 0.54 6.2 40 5.3 40
10000 9 49 0.5 7.3 47 6.2 47
12500 10.5 59 0.5 8.5 56 7.2 56
16000 12.5 72 0.46 10.1 68 8.6 68
20000 14.8 89 0.46 12 85 10.2 85
25000 17.5 105 0.42 14.2 99 12.1 99
31500 20.7 126 0.42 16.8 120 14.3 120
40000 24.6 147 0.39 20 140 16.9 140
50000 29.5 183 0.39 24 174 20.3 174
63000 34.9 220 0.36 28.3 209 24 209
Notes:
→ The performance parameters listed in the table are based on national standards. Customized products with specifications different from those in the table can be provided according to actual operating conditions.
→ The overall and installation dimensions shall be subject to the drawings confirmed after contract signing.

 

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