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YB27 Prefabricated Substation (American style)
1.General Description:
YB27 series substation is American type combined substation with function of high voltage control, protect, power transformation and distribution. Usually used in urban and rural power distribution system .The high voltage load switch and high voltage fuse of this product are installed in the oil of the transformer, with the two structure: in same case with the transformer and in different case with transformer. It can be used in high-rise buildings, building in urban and rural areas, residential communities ,high-tech development areas, small and medium size factories, mining areas, oil fields, temporary construction sites, and other premises.
2.Working Conditions
1.Ambient air temperature: -30°C~+40°C
2.Altitude: ≤1000m
3.Wind speed:34m/s ≤700pa
4.Relative humidity: Daily average relative humidity≤95%.
Monthly average relative humidity≤95%.
5.Installation inclination:≤grade 8 .
6.Applicable in the places without corrosive and flammable gas.
Note: Customized products are available.
3.Technical data
Transformer
No. | Rated voltage | Rated capacity | No-load current % S9、S10/S11 |
1 | 6,6.3,10 | 30~1600 | 0.5~2.2 |
Current transformer
Type | Rated primary current | Rated secondary current | Accuracy class | No less than 10 times | Secondary Load |
LCZ-35Q | 40~500 | 1000~2000 | 0.5/10P10 | 10 | 50 |
LZJC-10 | 100~1000 | 1000~2000 | 0.5/10P10 |
Load switch
Item | Unit | ||
Rated voltage | kV | 12 | |
Power frequency withstand voltage/1min(effective value) | kV | 42 | |
Peak lighting impulse withstand voltage | kV | 75 | |
Rated frequency | Hz | 50 | |
Rated current | A | 315 | 630 |
Rated short circuit breaking current | kA | 12.5 | 16 |
Rated withstand current(peak) | kA | 31.5 | 40 |
Rated short time withstand current | kA | 12.5 | 16 |
Rated short circuit sustained current | s | 4 | |
Rated short circuit making current | kA | 31.5、40 | |
Mechanical life | Time | 2000 |
4.Overall drawing