©
2012 Magnum Energy, Inc.
Page 42
Installation
2.15 Functional Test
After all electrical connections from the MMP enclosure to
the inverter, batteries, AC source, and
sub-panel
have been completed, follow these steps (refer also to Figure 2-26) to test the installation
of the MMP enclosure and to verify proper operation of the BYPASS switch breakers.
WARNING:
During this functional test, the front cover is removed and exposes
personnel to potential dangerous voltages and shock hazards inside the MMP enclosure
that may cause damage, injury, or death. If you do not have experience working with AC
and DC voltage circuits, do not attempt this test—use an experienced electrical installer.
CAUTION:
During this functional test, if any step cannot be veri
fi
ed or is incorrect,
stop and recheck/correct the connections before proceeding to the next step.
1. Turn OFF all AC breakers (i.e.,
INV BYP
,
INV IN
, and
INV OUT
) in the MMP enclosure.
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 to ensure the polarity of
the battery voltage is correct [battery positive (+) connected to the inverter positive
terminal thru the DC circuit breaker and battery negative (–) connected to inverter
negative terminal thru the DC shunt].
CAUTION:
Prior to turning on the inverter, turn OFF all inverter loads in the inverter
load panel (i.e., sub-panel).
2. After verifying that the battery bank voltage is proper for your inverter and that the battery
cable connections are the correct polarity, apply battery power to the inverter by turning the
DC disconnect breaker to the ON (up) position.
3. Turn the inverter ON.
a. Connect an AC voltmeter to the
Inverter Output Terminals
and verify the correct AC
output voltage of the inverter (depends on your inverter AC output voltage).
Info:
If the inverter does not turn on—verify the DC connections to/from the inverter
to the battery, and/or refer to the Troubleshooting section for your particular inverter.
Info:
If the inverter has a Search mode feature, the inverter’s AC full output voltage
will not be present/correct until Search is turned OFF, or by connecting a large enough
light bulb to bring the inverter out of Search. DO NOT connect anything but a light bulb
until all wiring and voltages are con
fi
rmed to be correct.
If using a Magnum inverter, use a light bulb greater than 5 watts (5 watts is the default
setting) to bring the inverter out of Search mode; or, the Search mode can be turned
OFF with a remote control (ME-RC or ME-ARC).
4. Turn ON the
INV OUT
1
breaker(s) in the MMP enclosure.
a. Ensure the inverter AC output voltage is passing thru the
INV OUT
(Inverter Output) breaker
by verifying the correct output voltage is present on the
AC Output Terminals
.
5. Turn ON the
INV BYP
2
breaker(s) in the MMP enclosure.
a. Ensure the inverter AC output voltage is no longer present on the
AC Output Terminals
.
Note¹
– On MMPxxx-60S models, the INV OUT and INV IN breakers are physically ganged together
and turn ON and OFF as a single breaker.
Note
2
–
The INV BYP and INV OUT breakers are interlocked together. Physically turning ON will turn
OFF the other, and vice-versa.
