Page 25
Fig 1.16 Three Phase 3 Wire Open Delta Direct Connection Using 3 CTs
Wiring Mode = 3P3O
Caution
In three phase 3 wire open delta direct connection mode, use PTs for voltages over 457V [line to
line]. be sure to connect V
2
to V
N
as shown above.
Fig 1.17 Three Phase 4 Wire Direct Connection Using 3 CTs, Wiring Mode = 3P4U
Caution
In
three phase 4 wire direct connection
mode, use PTs for voltages over 600V[457V].