9–8 PQM POWER QUALITY METER – INSTRUCTION MANUAL
COMMISSIONING CHAPTER 9: COMMISSIONING
S4 ALARMS/CONTROL
CURRENT/VOLTAGE
DETECT I/V ALARMS USING PERCENT
PHASE UNDERCURRENT RELAY
PHASE UNDERCURRENT LEVEL A
PHASE UNDERCURRENT DELAY sec.
DETECT UNDERCURRENT WHEN 0 A
PHASE OVERCURRENT RELAY
PHASE OVERCURRENT LEVEL A
PHASE OVERCURRENT DELAY sec.
PHASE OVERCURRENT ACTIVATION
NEUTRAL OVERCURRENT RELAY
NEUTRAL OVERCURRENT LEVEL A
NEUTRAL OVERCURRENT DELAY sec.
UNDERVOLTAGE RELAY
UNDERVOLTAGE LEVEL V
UNDERVOLTAGE DELAY sec.
PHASES REQ’D FOR U/V OPERATION
DETECT UNDERVOLTAGE BELOW
20 V
OVERVOLTAGE RELAY
OVERVOLTAGE LEVEL V
OVERVOLTAGE DELAY sec.
PHASES REQ’D FOR O/V OPERATION
CURRENT UNBALANCE RELAY
CURRENT UNBALANCE LEVEL %
CURRENT UNBALANCE DELAY sec.
VOLTAGE UNBALANCE RELAY
VOLTAGE UNBALANCE LEVEL %
VOLTAGE UNBALANCE DELAY sec.
VOLTS PHASE REVERSAL RELAY
VOLTS PHASE REVERSAL DELAY sec.
Table 9–1: PQM Setpoints (Sheet 8 of 12)
Courtesy of NationalSwitchgear.com
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