Magnum (MS4448 120/240VAC) MNE240 SeriesOwner's Manual

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MNE-240 E-PANEL INSTRUCTIONS
4.0 Start-up and Testing
After the DC and AC wiring has been completed, a series of voltage checks should be performed
to ensure the system wiring is correct. If any of the tests fail, recheck the AC wiring.
Before beginning, ensure all circuit breakers pertaining to the E-Panel system are OFF, this
includes:
• all circuit breakers in the main panel from all AC sources (utility or generator, if any) feeding
the E-Panel.
• all circuit breakers in the sub-panel (if used).
• all circuit breaker within the E-Panel, this includes the AC Input disconnect, the DC Disconnect
Breaker, and any additional AC or DC breakers installed.
A. Testing the Inverter AC Output Wiring
1. Slide the Inverter Bypass switch to the “INVERTER” position and turn the battery DC disconnect
to the ON (up) position.
2. Turn ON the inverter as outlined in the MS-AE Owner’s Manual (or ME-RC Owner’s Manual if
using a remote control). The inverters should be providing 120/240 VAC to the E-Panel AC Output
Bus-Bars (ensure the inverter is not in search mode).
3. Inside the E-Panel enclosure, use an AC voltmeter and measure the inverter voltage (Refer to
figure 16 for the following voltage checks):
a. between the AC HOT OUT 1 bus-bar and the NEUTRAL bus-bar, this voltage should be 120
Vac (± 3%).
b. between the AC HOT OUT 2 bus-bar and the NEUTRAL bus-bar, this voltage should be 120
Vac (± 3%).
c. between the AC HOT OUT 1 bus-bar and the AC HOT OUT 2 bus-bar, this voltage should be
240 Vac (± 3%).
B. Testing the E-Panel AC Input/Output Wiring
1. If the Inverter AC output voltages are correct (tested above): a) turn the inverter OFF; b) slide
the Inverter Bypass switch to the “BYPASS” position; c) switch ON the circuit breakers in the AC
main panel switch (from the generator or utility) feeding the E-Panel; and switch the AC input
disconnect to ON. These tests assume that the AC input source (Utility/Generator) is 120/240VAC
and that the neutral and ground are bonded together by the incoming AC source.
2. In the E-Panel, use an AC voltmeter and measure the generator or utility voltage (Refer to
figure 16 for the following voltage checks):
a. between the AC HOT OUT 1 bus-bar and the NEUTRAL bus-bar, this voltage should be 120
Vac (± 3%).
b. between the AC HOT OUT 2 bus-bar and the NEUTRAL bus-bar, this voltage should be 120
Vac (± 3%).
c. between the AC HOT OUT 1 bus-bar and the AC HOT OUT 2 bus-bar, this voltage should be
240 Vac (± 3%).
d. between the NEUTRAL bus-bar and the GROUND bus-bar, this voltage should be <0.5 Vac.
3. If all voltages/tests are correct, a) turn the inverter ON; b) slide the Inverter Bypass switch to
the “INVERTER” position; c) switch ON the circuit breakers either in the E-Panel or in the AC sub-
panel, depending on which is used for the inverter AC loads. Verify the inverter is charging the
batteries and powering the inverter AC loads.
4. Secure all covers/panels on the E-Panel, inverter, main panel and sub-panel (if used).
The MNE-240 Series E-Panel system is now tested and ready for operation. If the inverter needs
programming or is not operating properly, refer to the MS-AE Series Owner’s Manual for setup
and troubleshooting information.