PT open delta and Wye wirings
PT open delta and Wye wirings
(OP)
Hello all.
I have some issues with PT wirings. your help is appreciated in advance.
1- can Wye PT wiring (3 PTs) provide phase angle measurements?
2- the figure below shows the connection of a single PT to Schneider Vamp40 feeder protection relay. the manual says that with this configuration, all voltage functions such as:
27- undervoltage
59- overvoltage
32- reverse power protection
Are all these functions possible with this pt config?
I have some issues with PT wirings. your help is appreciated in advance.
1- can Wye PT wiring (3 PTs) provide phase angle measurements?
2- the figure below shows the connection of a single PT to Schneider Vamp40 feeder protection relay. the manual says that with this configuration, all voltage functions such as:
27- undervoltage
59- overvoltage
32- reverse power protection
Are all these functions possible with this pt config?






RE: PT open delta and Wye wirings
RE: PT open delta and Wye wirings
With four wire wye:delta transformer banks reverse power on only one phase is an known issue.
Bill
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"Why not the best?"
Jimmy Carter