CHAPTER 4: ELECTRICAL INSTALLATION INSTRUMENT POWER CONNECTIONS
EPM 9450/9650 ADVANCED POWER QUALITY METERING SYSTEM – INSTRUCTION MANUAL 4–5
4.4 Instrument Power Connections
The EPM 9450/9650 meter requires a separate power source.
To use AC power:
1. Connect the line supply wire to the L+ terminal
2. Connect the neutral supply wire to the N- terminal on the meter.
To use DC power:
1. Connect the positive supply wire to the L+ terminal.
2. Connect the negative (ground) supply wire to the N- terminal on the meter.
Power supply options and corresponding suffixes are listed in the table below.
• Do not ground the unit through the negative of the DC supply. Separate grounding
is required.
• Externally fuse the power supply with a 5 Amp @250V rated slow blow fuse. GE
recommends that you fuse both the L+ and N- connections for increased safety,
but if you are fusing only one connection, fuse the L+ connection.
• Use at least 14 Gauge supply wire for the power supply and ground connections.
Note
NOTE ON CORRECT METER FUNCTIONING:
The EPM 9450/9650 meter has a Heartbeat LED, located on the top, right side of the meter
face. When the meter is functioning correctly, the red LED pulse toggles on and off (blinks)
5 times per second. If the meter is not functioning correctly, the Heartbeat LED slows to
one pulse per second
Control Power Option Suffix
18-60 Volts DC D
90-276 Volts AC/DC D2
To Next Page
Loading...