ISA T1000 PLUS - Hint: Vector Group Test for a PT Transformer

DOC. MIE91093 Rev. 1.34 Page 26 of 145
The two voltages shold have the same amplitude, equal to the
phase to phase voltage: the connections is shown here below.
With this connection, the VN socket of the relay is not
connected: the VN point will be created by the relay input
transformers.
1.2.7. Hint: vector group test for a PT transformer
V MAIN
V AUX
VN