Oil-immersed On-load Tap-changing Distribution Transformer
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Technical Parameters of S11 Oil-Immersed Distribution Transformer (10kV)

Rated Capacity
(kVA)
Voltage Combination and Tapping Range Vector Group No-Load Loss (W) Load Loss (W) No-Load Current(%) Short-Circuit Impedance
(%)
H.V H.V Tap Range L.V
30 6
6.3
10
11
±2×2.5
±5
0.4 Dyn11
Yzn11
YynO
100 630/600 1.5 4
50 130 910/870 1.3
63 150 1090/1040 1.2
80 180 1310/1250 1.2
100 200 1580/1500 1.1
125 240 1890/1800 1.1
160 280 2310/2200 1
200 340 2730/2600 1
250 400 3200/3050 0.9
315 480 3830/3650 0.9
400 570 4520/4300 0.8
500 680 5410/5150 0.8
630 810 6200 0.6 4.5
800 980 7500 0.6
1000 1150 10300 0.6
1250 1360 12000 0.5
1600 1640 14500 0.5
2000 1940 18300 0.4 5.0
2500 2290 21200 0.4

Notes:

1. For transformers with a rated capacity of 500 kVA and below, the load loss values above the slash in the table apply to the Dyn11 or Yzn11 vector group, and the load loss values below the slash apply to the Yyn0 vector group.

2. When the annual average load factor of the transformer is between 35% and 40%, the loss values in the table can achieve the highest operating efficiency.

About
Taizhou Haitian Electric Manufacture Co., Ltd.
Taizhou Haitian Electric Manufacture Co., Ltd.

As a Jiangsu private science and technology enterprise, our company, Taizhou Haitian Electric Manufacturing Co., Ltd., is honored as Jiangsu Green Factory, Taizhou Top Ten High-Growth Enterprise and Hailing District Top Ten Scientific and Technological Innovation Enterprise. Founded in 1958 as Taizhou Transformer Factory, our company was a designated power transformer manufacturer under the former relevant ministries and an associated unit of China State Shipbuilding Corporation. Now an accredited supplier of State Power Investment Corporation and China Southern Power Grid, our company has over 50 years of transformer manufacturing experience.

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