©
2009 Magnum Energy Inc
Page 38
Installation
2.9 Functional
Test
After all electrical connections
to the inverter, batteries, AC source, and sub-panel
have been
completed; follow these steps to test the installation and the inverter operation.
CAUTION:
Use a multimeter to verify the correct DC voltage for your particular inverter
model (i.e., 24-volt battery bank for a 24-volt inverter) and ensure the polarity of the
battery voltage is correct (battery positive connected to inverter positive terminal and
negative battery connected to inverter negative terminal).
1. Apply battery power to the inverter by closing the DC circuit breaker. The inverter will remain
OFF, but the green status indicator on the front of the inverter will quickly blink once to indicate
that DC power has been connected and is ready to be turned on.
2. Prior to turning on the inverter, make sure all AC loads (i.e., appliances) are NOT connected
to the inverters output or any AC outlets powered by the inverter.
3. Lightly press and release the inverter’s ON/OFF switch to turn the inverter ON. Verify the
inverter’s status indicator is blinking - indicating the inverter is ON.
4. Connect a light bulb
no larger than 10 watts
to the inverter output and verify it comes on and shines
normally. DO NOT connect anything but a light bulb, until all wiring and voltages are con
fi
rmed to
be correct.
Info:
The inverter’s AC output voltage will not be correct until a load greater than
5 watts (5 watts is default setting) is connected to the inverter; or the search mode
is turned OFF with a remote display (ME-RC). The 10 watt (or greater) light bulb is
used because it is a suf
fi
cient load to bring the inverter out of “search” mode up to
full voltage.
5. Check the AC output voltage of the inverter by connecting an AC voltmeter to the output
terminals as shown in
fi
gure 2-25 and verify the correct output voltages.
6. Press and release the inverter’s ON/OFF switch to turn the inverter off. The inverter’s status
indicator and the connected load should go off.
7. Apply AC power to the inverter’s AC input. After the AC input power is quali
fi
ed (approximately
15 seconds), the incoming AC power will transfer through the inverter to the inverter’s AC output
and power the light bulb. Verify the inverter’s status indicator and the light bulb comes on.
8. Even though the light bulb is on, the inverter is currently disabled (off). Press and release the
ON/OFF switch on the inverter to enable (turn-on) the inverter.
9. Disconnect the incoming AC power to the inverter. Verify the light bulb remains on and is now
powered by the inverter.
If the inverter passes all the steps, the inverter is ready for use. If the inverter fails any of the
steps, refer to the Troubleshooting section.
Figure 2-25, AC Voltage Checks
A C T erm in al B lo ck
A C O utput
120 V ac
(
±
5% )
N eutral to G round
< 0.5 V ac
3 0
30
