17
INV2500-HS & INV5000-HS SERIES
OPERATING MANUAL
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 the AC output cable to the proper output screw terminals. See
Figure 10 for the correct connection for 115 or 230VAC output versions.
Connect a load of approximately 10 amperes across the output of the inverter.
14.5
To power up the inverter, turn the A side (left) DC input circuit breaker on by
moving the toggle to the up position. The A side fans and input OK and Sync
OK LEDs should come on followed by the Output OK LED approximately four
seconds later. After the Output OK LED is on, turn on the A side AC output
breaker by placing the toggle in the up position. Next, turn the B side (right)
DC input breaker on. The B side fans and Input OK and Sync OK LEDs
should come on followed by the Output OK LED approximately four seconds
later. After the Output OK LED is on, turn on the B side AC output breaker.
Check the AC voltage across the load with a digital AC voltmeter. The voltage
should be between 115 and 120VAC or between 230 and 240VAC, depend-
ing on the model.
14.6
Check the Form C Relay contacts with an ohmmeter. See Figure 3. Measure
the resistance between the N.O. contacts and C contacts. They should
indicate an open. Measure 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 break-
ers, by placing the toggles in the down position. Test each inverter in the
manner described above.
15.0
INVERTER APPLICATION
15.1
In the actual application of the inverter, follow the procedure in sections 14.2
through 14.6, except the inverter should be connected to its actual load. The
loads connected to the output of the inverter should always have their own
individual circuit breakers. Make connections to the Form C relay contacts as
required. Then re-install the rear plastic safety cover.
15.2
For two or more inverters in parallel, make the input and output connections
to the inverters as described in Section 13.0. See Figure 9. Put all output
distribution circuit breakers in the off position. Connect the sync terminals
together observing proper polarity.
