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©
2017 Sensata Technologies
Installation
BATTERY
DC cable
with ring lug
bolt
flat
washer
nut
lock washer
battery
post
battery terminal
Verify that the
DC cable lugs are flush
with the battery terminals.
Figure 2-7, DC Cable to Battery Terminals
To wire the inverter to the battery bank:
1. Route an appropriately sized DC negative wire (marked white) from the
negative terminal of the battery bank to the inverter’s negative terminal
(Item 10, Figures 1-2 and 1-3; Item 8, Figure 1-5).
2. Mount the fuse/disconnect assembly (or circuit breaker) as near as
practical to the batteries and leave open (i.e., no power to inverter).
WARNING:
DO NOT close the DC circuit breaker or connect the
fuse to connect battery power to the inverter at this time. This
will occur after the installation is complete.
CAUTION:
If connecting live battery cables to the inverter DC
terminals, a brief spark or arc may occur; this is normal and due
to the inverter’s internal capacitors being charged.
3. Route and connect an appropriately sized DC positive wire (marked red)
from the inverter’s positive DC terminal (Item 11, Figures 1-2 & 1-3;
Item 11, Figure 1-5) to one end of the fuse/disconnect assembly (or
circuit breaker).
4. Connect a short wire (same rating as the DC wires) to the other side of
the DC circuit breaker (or one end of the fuse/disconnect assembly) and
the other end of that short wire to the positive terminal of the battery
bank (see Figure 2-1 or Figure 2-2 for reference). This is essential to
ensure even discharging across the entire battery bank.
5. Ensure the DC wire connections (on batteries, inverter, and DC circuit
breaker/fuse) are
fl
ush on the surface of the DC terminals, and all
hardware stacked correctly (see Figures 2-7 and 2-8). Verify all DC
connections on the inverter are torqued correctly (see Table 2-1), and
the total cable distance from the inverter to the battery is within the
requirement of Section 2.4.1 (DC Wire Sizing).
6. Once the DC connections are completely wired and tested, coat the
terminals with an approved anti-oxidizing spray.
7. If batteries are in an enclosure, perform a
fi
nal check of the connections
to the battery terminals, then close/secure the battery enclosure.
8. Route an appropriately sized DC ground wire (see Table 2-2) from the
inverter’s DC chassis ground connection to a dedicated system ground.
9. Once the installation is complete and all connections veri
fi
ed, close the
fuse disconnect (or circuit breaker) to provide power to the inverter.
