2–8 PQM POWER QUALITY METER – INSTRUCTION MANUAL
ELECTRICAL CHAPTER 2: INSTALLATION
The 2½ element 4 wire wye connection can be used for situations where cost or size
restrictions limit the number of VTs to two. With this connection, Phase V
bn
voltage is
calculated using the two existing voltages. Select the
S2 SYSTEM SETUP \ CURRENT/
VOLTAGE CONFIGURATION \ VT WIRING:
4 WIRE WYE (2 VTs) setpoint.
This wiring configuration will only provide accurate power measurements if
the voltages are balanced
NOTE
Courtesy of NationalSwitchgear.com
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