13
INV2500-HS & INV5000-HS SERIES
OPERATING MANUAL
shutdown times shown in the table, the output will be shut down and must be
reset by turning both input and output circuit breakers off. After this, the
input breaker(s) should be turned back on (up position); after the Output OK
LED(s) come on the output breaker(s) should be turned back on (up posi-
tion).
12.5
Grounding. The DC input ground, AC output ground, AC neutral and
chassis ground are all in common. The chassis ground should be connected
to system ground.
12.6
Status Indicators. Three green LEDs indicate the operating status of each
INV2500-HS inverter module. They are (from top to bottom): Input OK, Sync
OK and Output OK.
12.7
Form C Relay Contacts. These contacts have normally open (N.O.) and
normally closed (N.C.) positions for normal operation of each inverter. See
Figure 3 for connections. Note that there is a separate set of contacts for
each half (A and B sides) of the inverter. If it is desired to monitor the inverter
as a whole, the two sets of contacts may be connected as shown in Figure 7
to give an OR function for either set of contacts.
12.8
Sync Connections. There are +Sync and -Sync terminals on the terminal
block. When two or more inverters are connected in parallel these Sync
terminals must be connected together, observing the polarities.
12.9
Inverter Module Connections. If the INV2500-HS inverter module is oper-
ated or tested separately from the shelf, connections should be made to the
J1 connector with a mating connector and the pin connections given in Figure
8.
13.0
PARALLEL OPERATION
13.1
The INV2500-HS and INV5000-HS Series inverters are designed to operate
in parallel for higher output current. For the INV2500-HS, the units are auto-
matically connected in parallel in the INVR2U-HS shelf. The INV5000-HS
230VAC units have two INV2500-HS inverters connected in series in the
shelf. Two or more INV5000-HS-230 inverters may be connected in parallel
for additional output power or for N+1 redundant operation. This is done by
connecting all inputs in parallel and all outputs in parallel (line, neutral, line),
although the DC inputs could come from two separate sources. In addition,
the sync terminals must be connected together, +Sync to + Sync and -Sync
to -Sync. The Sync terminals are used only for parallel connection of two or
