Power Meter Bulletin No. 3020IM9503R6/98
Appendix A—Specifications December 1998
70 1998 Square D All Rights Reserved
APPENDIX A—SPECIFICATIONS
Metering Specifications
Current Inputs
Current Range ..................................................................................... 0–10.0 A ac
Nominal Current............................................................................................ 5 A ac
Voltage Inputs
Voltage Range (line to line) ................................................................. 35–600 Vac
Voltage Range (line to neutral) ............................................................ 20–347 Vac
Nominal Voltage (typical)................................... 208/120, 480/277, 600/347 Vrms
Frequency Range (50/60 Hz)..................................................................... 45 to 66 Hz
Harmonic Response—Voltage, Current
Frequency 45–65 Hz ....................................................................... 31st harmonic
Accuracy
Current
➀
..................................................................................... ±0.25% reading
➁➂
Voltage......................................................................................... ±0.25% reading
➂
Power........................................................................................... ±0.5% reading
➁➂
Energy
➃
....................................................................................... ±0.5% reading
➁➂
Demand
➃
.................................................................................... ±0.5% reading
➁➂
Power Factor .............................................................................................. ±1.00%
Frequency 50/60 Hz ................................................................................. ±0.02 Hz
Metering Input Electrical Specifications
Current Inputs
Nominal Full Scale............................................................................................. 5 A
Metering Over-Range ......................................................................................... 2x
Overcurrent Withstand.................................................................. 500 A, 1 second
Input Impedance ................................................................................ 1.5 milliohms
Burden ....................................................................................................... 0.15 VA
Isolation ......................................................................................................... 600 V
Voltage Inputs
Nominal Full Scale.................................................... 208/120, 480/277, 600/347 V
Metering Over-Range ...................................................................................... 20%
Input Impedance ............................................................. Greater than 2 megohms
➀ Any CT secondary currents less than 20 mA are reported as zero.
➁ From 20% nominal current to 150% nominal current.
➂ For readings less than 20% nominal, add ±0.05 full scale error.
➃ Satisfies applicable ANSI C12.16 revenue accuracy requirements.
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