inverter was powering a load and now it doesn’t work, what’s the problem?
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A: The current at such a low voltage may have blown the fuses (except 48Vdc). Remove the
front four screws and slide the inverter’s heatsink out of the extruded case. The fuses are
located near the back of the inverter’s PC board, Order new fuses from Exeltech (special
type). Should the inverter still fail to function after replacing the fuses, call technical support.
Q18: Does Exeltech make split-phase (bi-phase) MX inverter modules?
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A: Exeltech makes split-phase MX inverters, but we do not make split-phase power modules.
Exeltech makes split-phase inverters by taking two inverters that are in phase and phase-
shifting the output of one of the inverters 180 degrees. This provides 2 phases of power which
are summed on a daughter board on the back of an MX inverter.
Q19: Can I use the same MX modules in my single-phase inverter with my split-phase
inverter?
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A: Yes, power modules are the same throughout Exeltech inverters as long as they are the
same input and output voltage. Master modules and control cards are not necessarily
compatible between a single-phase inverter and a split-phase inverter. Please call technical
support for specific cases.
Q20: What is the efficiency curve of my Exeltech inverter?
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A: See Exeltech Efficiency chart (under construction)
Q21: Can I operate my Exeltech inverter above 40C?
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A: Yes, the inverter is derated 20% of its full power for every 10C over 40C. That means you
can get 80% at 50C and 60% at 60C etc... etc...
Q22: Grounding?
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A:
MX Series Grounding
The input and output of the inverter are isolated with a minimum of 1 500 Vac. While the
isolation guarantees hazardous voltage from the input will not reach the output and
conversely the inverter is designed to have both the input and output grounded. The inverter
is compatible with negative or positive ground battery systems. The battery bank may actually
be grounded at any intermediate voltage. The AC output. again while floating, is designed to
have the neutral (white) wire connected to chassis (green) wire somewhere in the system.
While the inverter can actually function with the battery and the output ungrounded it is not
warrantied in that configuration.
Explanation
In order for the inverter to function the AC output must be AC grounded to the DC input. This
is accomplished internally by 2 capacitors One goes from the AC neutral ( white ) lead to
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