Dear engrs
In Saudi Arabia, 132/33kV substations utilize FSCT (Free Standing Current Transformers) for OHL feeder protection when connecting to 132kV GIS over a short distance of 200 meters for cable tail protection. However, the same cable tail protection feature is not applied to the 132/33kV transformer protection requirements when the connection is made from 132kV GIS to a Grid Transformer (GT).
I understand that GT transformers use cable sealing ends; is this the reason for the difference?
Can anyone explain?
In Saudi Arabia, 132/33kV substations utilize FSCT (Free Standing Current Transformers) for OHL feeder protection when connecting to 132kV GIS over a short distance of 200 meters for cable tail protection. However, the same cable tail protection feature is not applied to the 132/33kV transformer protection requirements when the connection is made from 132kV GIS to a Grid Transformer (GT).
I understand that GT transformers use cable sealing ends; is this the reason for the difference?
Can anyone explain?