Instruction Manual

Appendix A Parameters for Monitoring and Logging
176 EM720 Power Quality and Revenue Meter
Designation Description
MINUTES Minutes
SECONDS Seconds
MINUTE INTERVAL Minute interval: 1-5, 10, 15, 20, 30, 60 min
SYMM COMP Symmetrical Components
V PSEQ Positive-sequence voltage
V NSEQ Negative-sequence voltage
V ZSEQ Zero-sequence voltage
V NSEQ UNB% Negative-sequence voltage unbalance
V ZSEQ UNB% Zero-sequence voltage unbalance
I PSEQ Positive-sequence current
I NSEQ Negative-sequence current
I ZSEQ Zero-sequence current
I NSEQ UNB% Negative-sequence current unbalance
I ZSEQ UNB% Zero-sequence current unbalance
RMS (1/2 cycle) 1/2-Cycle Values
V1
V1/V12 voltage
1
V2
V2/V23 voltage
1
V3
V3/V31 voltage
1
V12 V12 voltage
V23 V23 voltage
V31 V31 voltage
I1 I1 current
I2 I2 current
I3 I3 current
I4 I4 current
In In current
V ZERO-SEQ
Zero-sequence voltage
7
I ZERO-SEQ
Zero-sequence current
7
V UNB%
Voltage unbalance
6
I UNB%
Current unbalance
6
FREQ Frequency (1-cycle)
RT PHASE 1-Cycle Phase Values
V1
V1/V12 voltage
1
V2
V2/V23 voltage
1
V3
V3/V31 voltage
1
I1 I1 current
I2 I2 current
I3 I3 current
kW L1
kW L1
8
kW L2
kW L2
8
kW L3
kW L3
8
kvar L1
kvar L1
8
kvar L2
kvar L2
8
kvar L3
kvar L3
8
kVA L1
kVA L1
8
kVA L2
kVA L2
8
kVA L3
kVA L3
8
PF L1
Power factor L1
8
PF L2
Power factor L2
8