++++General:
YBM()series pad mounted transformer is suitable for 7.2kVup to 36kV ring power supply and terminal power supply system as HV distribution calculation and protection equipment. In the substation except transformer there are 4 load switches, two-position load switch, protection fuse and plug-in fuse in the HV side.
We can install control electrical, distribution electrical, compensation electrical and meters. This substation can use indoor or outdoor.
++++Service environment:
a) Air temperature: Maximum temperature: +40°C; Minimum temperature:-25°C
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
++++Main technical specifications:
Name | Unit | HV equipment | Transformer | LV Equipment |
Rated voltage | kV | 24 | 24/0.4 | 0.4 |
Rated current | A | 630 | 3/75~150/1875 | Less than 4000 |
Frequency | Hz | 50 | ||
Rated Capacity | kVA | 50-1250 | ||
Pfr withstand | kV | 42/50/70 | 2.5 | |
BIL | kV | 75/125/170 | ||
Crust Protection Grade | IP23 | Omni seal | IP33 | |
Noisy Grade | dB | Oil type less than 55 | ||
Appearance Dimensions | mm | According to primacy wiring circuit schema |
++++Structure characteristics:
The box structure of this product is divided into two parts. In front is HV and LV operation room. In the HV room including HV terminals, load switch, off-load switchgear, plug-in fuse, pressure relief valve, thermometer, oil level indicator and oil drain valve. In LV room including LV terminals. In the back sector are oil tank and radiator, and transformer winding and iron, load switch and protection fuse are in the oil tank.