Power transformer three phase oil immsered electrical transformer rated voltage during 6-35kV, oil immersed transformer are most used in power plant,power grid transmission and distribution station,industry& commerce electrical substation as the electrical equipment of power transmission,
1,Two windings or three windings
2,On-load or no-load voltage tapping changer
3,Natural cooling or force air or oil cooling,
4,capacity range 10-5000kVA

Service condition
a) Suitable for indoor or outdoor application
b)Air temperature: Maximum temperature: +40ºC; Minimum temperature:-30ºC
c) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
d) Altitude above sea level: Maximum installation altitude: 2000m.
e)Max wind speed:35M/s
f) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
g) No frequent violent shake
Note: * Beyond those services condition should enquiry to manufacturer technical dept during order

Tests
1,   Voltage ratio. Polarity and phase relationship test on each tapping
2,   Resistance of all windings
3,   No-load current and no-load losses measurement
4,   Load losses measurement at rated current and frequency
5,   Impedance voltage measurement
6,   Induced over-voltage and separate source voltage withstand tests
7,  Impulse voltage withstand test.
8,   Noise level test
9,   Oil leakage test
10, Overload test at 150% rated current for one hour after temperature rise test and hot resistance measurement of (HV - LV)

Shanghai Electric Group Busbar Trunking Co., Ltd.

Year Established:

Business Type:Manufacturer, Trading Company

Management Certifiation:

Operational Address: No. 5555, Liuxiang Rd, Shanghai Electric Industry Zone, Jiading District, Shanghai, China