Industry Information-Hebei Zhongbei Transformer Co., Ltd

What is Impedance Voltage of Oil-Immersed Transformers

Impedance voltage(also known as short-circuit voltage)is a key technical parameter for oil-immersed transformers.It refers to the percentage of the rated voltage that needs to be applied to one winding,when the other wind...

Why should the iron core of oil-immersed transformer be grounded at multiple points?

Oil‑immersed transformer cores must be single‑point grounded; multi‑point grounding is a severe fault, not a design requirement. Why the Core Needs (Single‑Point) Grounding During operation, the core and internal ...

What Does the Rated Temperature Rise of an Oil-Immersed Transformer Stand For?

Rated temperature rise is a core thermal performance index,referring to the maximum allowable temperature difference between the transformer’s key components and the ambient air temperature when operating continuously u...

How to select transformer oil grade for tropical high-temperature oil immersed transformer?

Tropical service features persistently high ambient temperature (peak ambient commonly 35℃~50℃), long-term high relative humidity above 80%, and many tropical coastal regions suffer continuous salt fog corrosion. Oil ...

What voltage class oil immersed transformer is used for wind farm step-up station?

Wind farm power conversion has two-tier oil-immersed transformer layout: turbine pad-mounted box transformer (1st step-up) + main substation step-up transformer (2nd grid tie step-up). All main station large capacity unit...

Amorphous core vs silicon steel oil immersed transformer which is more cost-effective?

Cost efficiency depends on annual energized running hours,load factor,electricity price,service life;Silicon Steel wins short-term upfront cost;Amorphous beats total lifecycle cost for long continuous operation(20–30 ye...