2–14 EPM 9450/9650 ADVANCED POWER QUALITY METERING SYSTEM – INSTRUCTION MANUAL
EPM 9450/9650 METER SPECIFICATIONS CHAPTER 2: METER OVERVIEW
2.9 EPM 9450/9650 Meter Specifications
2.9.1 Power Supply
CONTROL POWER
Option 0: ...........................................24VDC (-20%) to 48 VDC (+20%)
Option 1: ...........................................120V AC/DC (-20%) to 230VAC (+20%)
Connection Screws’ Torque: ....6 to 9 in-lb max. or 0.68 to 1 Nm max.
Auxiliary Output Power Voltage:15 to 20VDC at 5-200mA
Maximum Auxiliary Power Current:1A (short protected)
Maximum Power Supply Range:100 to 250 VAC
2.9.2 Inputs
INPUT VOLTAGE
Range: ................................................150 Volts Phase to Neutral, 300V Phase to Phase (Standard; for use
with PTs)
300 Volts Phase to Neutral, 600V Phase to Phase, System voltage
Option B (277/480 Volt connection)
Withstand Capability: .................Meets ANSI C37.90.1 Surge withstand capability
Optically isolated: .........................to 2500VDC
INPUT CURRENT
Range: ................................................10A Max. (Programmable to any CT Ratio)
Fault Current recording to 60A peak secondary based on 5A Full Scale
Withstand Capability (23
o
C): ...Continuous rating - 20A
Surge - 100A/10 s, 300A/3 s, 500A/1 s
Current Input Terminals..............8-32 threaded studs
The current inputs are only to be connected to external current
transformers
BURDEN
Voltage: .............................................0.05VA @120V rms
Current: .............................................0.002VA @5A rms
ISOLATION
Inputs and outputs: .....................2500V
Com ports:.........................................isolated from each other
SENSING METHOD
RMS Update Time: .......................200msec - High-speed readings
1 sec - Revenue-accurate reading
FREQUENCY RANGE
Fundamental: .................................20 to 65Hz
Measuring Capability: ................Up to 255th Harmonic
2.9.3 Physical
DIMENSIONS
HxWxL:................................................3.4 x 7.3 x 10.5 in/8.6 x 18.5 x 26.6 cm
POWER CONSUMPTION
Maximum: ........................................40 Watts (with optional modules and display)
Nominal: ...........................................Approximately 12 Watts (without optional modules or display)
IMPEDANCE
IRIG-B Port Impedance: ..............8mA@5V
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