|
Earthing Transformers :
Earthing
up to 2 MVA 33 kV - Earthing transformers are used to create a
neutral point in a three-phase system, which provides possibility for
neutral earthing. The earthing can be through an arc-suppression
reactor, a neutral earthing reactor or resistor or directly. Earthing
transformers are usually oil immersed and may be installed outdoor. In
cases where a separate reactor is connected between the transformer
neutral and earth, the reactor and the transformer can be incorporated
in the same tank.
Neutral earthing transformers are normally provided in 3-phase system, which is without neutral and earth fault protection.
Neutral
earthing transformer is having zig-zag (interstar) winding to achieve
the required zero phase impedance. In addition an auxiliary winding can
also be provided to meet the requirement of auxiliary power supply.
ONAN
/ONAF cooling with conventional pressed steel radiators. The range
includes up to 33 KV systems and as per the site requirements.
|
