EARTHING TRANSFORMERS

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#EARTHING TRANSFORMERS

EARTHING TRANSFORMERS

An earthing transformer is usually associated with three-phase supply systems.

On a three-phase system, the neutral would be earthed either directly or through some limiting impedance / resistance. When the neutral point is not available or does not exist with a delta secondary winding of the transformer, a neutral point needs to be created. This is the purpose of the earthing transformer, which could consist of a zig- zag winding, or a two-winding star delta transformer where the star winding of correct voltage supplies an accessible neutral point when connected to the supply system.

Product scope

Up to 2 MVA

High voltage up to 36 kV

Low voltage up to 0.69 kV

Classes E2, E3, C2, F1

Frequencies: 50 Hz, 60 Hz and 16 2/3 Hz

Cooling: AN / ANAN / ANAF

Insulation system temperature: F and H

Partial discharges <10 pC

Protection degree: IP00 - IP54

 

 

 

 

 

 

 

 

 

 

 

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