Magnum Energy Series Stacking Cable Kit (ME-SSI) User Manual

Page 21

2010 Magnum Energy, Inc.

Operation

Battery voltage is within the DC voltage range for your inverter.
The DC negatives of each inverter are connected together us-

ing the negative DC interconnect provided (i.e., 2/0 AWG and

3 feet max).

The positive (+) battery cable(s) is connected to the positive

(+) battery terminal through a DC disconnect and overcurrent

device.

The negative (–) battery cable(s) is connected to the negative

(–) battery terminal.

Power-up Sync Test
1. While monitoring the Status LED located on each inverter, apply

DC voltage to both inverters at the same time (ensure AC is not

connected).

CAUTION: It is crucial that the DC voltage be connected

to both inverters within 15 seconds of each other. The

units go through an auto-detect when fi rst powered-

up to synchronize the units for series stacking. If both

units are not powered up within this time, then series

synchronization will not occur.

2. The Status LED on both inverters should blink 9 times in sync.

This indicates that the two units have recognized each other

and are communicating as a series stacked system.

Testing Invert Mode
3. Press the Power ON/OFF switch on either inverter, this should

turn on both inverters. (If using a remote control, press the

INVERTER ON/OFF button on either remote, and then verify

that the INV and PWR LED on both remotes come on). If either

unit is “Searching”, you must disable the Search mode prior to

making any voltage measurement. The inverters should now be

providing 120/240VAC to the AC sub-panel.

4. Measure the voltage between the L1 terminal and the neutral

bus in the AC sub-panel. This voltage should be 120VAC

(±6VAC).

5. Measure the voltage between the L2 terminal and the neutral

bus in the AC sub-panel. This voltage should be 120VAC

(±6VAC).

6. Measure the voltage between the L1 and L2 terminals in the AC

sub-panel. This voltage should be 240VAC (±12VAC).

7. Turn on the AC load breakers in the sub-panel which are pow-

ered by the inverters.

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