Delta Synchro/Power Monitor Connection (Two Wattmeter Method) - GE PACSystems RX3i User Manual

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Delta Synchro/Power Monitor Connection (Two Wattmeter Method)

This diagram illustrates the wiring of an open delta system utilizing the two wattmeter
method of measurement. When used for paralleling the two grids, the missing voltage and
current inputs must be configured as unused, so the PSM can reconstruct those signals
Fuses on the PT primaries and secondaries are required. A fuse failure is an indication of
wiring problems within the system.
L1
L2
L3
PACSystems* RX3i Power System Measurement Module – February 2013
2-18
Public Grid
Breaker
Connections
CTs
CT Shorting Block
PTs
1A Fuses on
secondary
To Load
Breaker
Ia1+
Ia2+
Ia1-
Ia2-
Ic1+
Ic2+
Ic1-
Ic2-
CT Shorting Block
Va1
Va2
Vc1
Vc2
1A Fuses on
secondary
COM1
COM2
Frame Ground
CTs
PTs
GFK-2749
Generator
G
Frame
Ground