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Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
Chapter 3
CGCM-DLR Unit Operation
Metered Parameters
The CGCM-DLR unit provides the following metered parameters. The
collection of metering data is dependent on the metering wiring mode that is
selected, for example, single-phase, open-delta, four-wire wye, and three-wire
wye.
Table 3 - Metered Parameter Accuracy
Metered Parameter
Metering Wiring Mode
Single-phase
Delta
Three-wire Wye
Four-wire Wye
Dual-bus
Gen Voltages, 3, L-L
CA
AB, BC, CA
AB, BC, CA
AB, BC, CA
-
Gen Voltage, avg, L-L
Yes (=CA)
Yes
Yes
Yes
-
Gen Voltages, 3, L-N
N/A
N/A
N/A
A, B, C
-
Gen Voltage, avg, L-N
N/A
N/A
N/A
Yes
-
Gen Currents, 3
A, B, C
A, B, C
A, B, C
A, B, C
-
Gen Current, avg
Yes
Yes
Yes
Yes
-
Gen Kilowatts, 3
N/A
N/A
N/A
A, B, C
-
Gen Kilowatts, total
Yes
Yes
Yes
Yes
-
Gen kVA, 3
N/A
N/A
N/A
A, B, C
-
Gen kVA, total
Yes
Yes
Yes
Yes
-
Gen kVAR, 3
N/A
N/A
N/A
A, B, C
-
Gen kVAR, total
Yes
Yes
Yes
Yes
-
Gen Power Factor, 3
N/A
N/A
N/A
A, B, C
-
Gen Power Factor, avg
Yes
Yes
Yes
Yes
-
Gen Frequency
Yes
Yes
Yes
Yes
-
Excitation Current
Yes
Yes
Yes
Yes
-
Gen Kilowatt Hours
Yes
Yes
Yes
Yes
-
Gen kVAR Hours
Yes
Yes
Yes
Yes
-
Gen kVA Hours
Yes
Yes
Yes
Yes
-
Diode Ripple Level
Yes
Yes
Yes
Yes
-
Load Share Error
Yes
Yes
Yes
Yes
-
Voltage Match Error
(1)
Sync Phase Error
Sync Frequency Error
Bus Voltages, 3, L-L
CA
AB, BC, CA
AB, BC, CA
AB, BC, CA
N/A
Bus Voltage, avg, L-L
Yes (=CA)
Yes
Yes
Yes
Yes
Bus Voltages, 3, L-N
N/A
N/A
N/A
A, B, C
N/A
Bus Voltage, avg, L-N
N/A
N/A
N/A
Yes
N/A
Bus A Frequency
Yes
Yes
Yes
Yes
Yes
Bus B Frequency
N/A
N/A
N/A
N/A
Yes
Gen Phase Rotation
N/A
Yes
Yes
Yes
Yes
Bus Phase Rotation
N/A
Yes
Yes
Yes
N/A
(1) Results updated only while Synchronization is active (tag
InitiateSync
= 1).