OLTC on HV or LV side of transformer
OLTC on HV or LV side of transformer
(OP)
What are the advantages of having OLTC on the HV or LV winding of a transformer ? Why are they always installed on the HV side ?
HV side: current is lower but voltage is higher
Thanks.
HV side: current is lower but voltage is higher
Thanks.






RE: OLTC on HV or LV side of transformer
You have answer in your Q.
Current is lower. It's "easy" for OLTC contacts--> small size of OLTC---> cheaper.
Best Regards.
Slava
RE: OLTC on HV or LV side of transformer
RE: OLTC on HV or LV side of transformer
1. The more no. of turns on the HV side gives a better resoultion i.e. finer steps of voltage change.
2. With LV windings normally placed next to the core and behind HV windings, it is more difficult to bring the taps out. (You could always place the tapped LV windings outside the HV windings but that would make the transformer bigger and costlier).
RE: OLTC on HV or LV side of transformer