INV2500-HS SERIES
MANUAL
14.0 INSTALLATION AND TESTING
14.1
The inverter modules should be initially tested in their shelves. For 23-inch rack
mounting, use panel extenders.
14.2
Put all input and output circuit breakers in the off (down) position. See Figure 3. Remove
the rear plastic safety cover.
14.3
Connect the input battery to the -48VDC and 48VDC Return input bus bars by means
of the 1/4-20 studs. Connect the input ground (10-32 stud) to the system ground. Make
sure the correct polarity is used and make sure the connections are clean and firm.
Reversed input polarity could cause damage to the inverter.
14.4
Connect an AC load to the proper output screw terminals. See Figure 10 for the output
screw terminal connections. Connect the load of approximately 10 amperes for 115VAC
output or 5 amperes for 230VAC output across the output of the inverter shelf.
WARNING: When using “floating neutral”, Option E of the INV2500-HS module
and standard with the INV2500H-HS module, the AC neutral output terminal “N” is
floating with respect to chassis ground. A neutral-to-ground connection must be
re-established external to the inverter and be in compliance with the requirements
of the end-use application.
14.5
Insert an inverter module into the A side (left) of the shelf. To power up the inverter, turn
the DC input circuit breaker on by moving the toggle to the up position. The fans and
input OK and Sync OK LEDs should come on followed by the Output OK LED approxi-
mately four seconds later. After the Output OK LED is on, turn on AC output breaker by
placing the toggle in the up position. Check the AC voltage across the load with a digital
AC voltmeter. The voltage should be approximately 115VAC or 230VAC, depending on
the model.
14.6
Check the Form C Relay contacts with an ohmmeter. See Figure 3. Measure the resis-
tance between the N.O. contacts and C contacts. They should indicate an open. Mea-
sure the resistance between the N.C. contacts and the C contacts. They should indicate
a short.
14.7
Turn off the AC output circuit breakers first, followed by the DC input breakers, by plac-
ing the toggles in the down position. Remove the module from the shelf. Test each
inverter in the manner described above.
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