Dc Input; Figure 7 Ac Wiring - With Maintenance Bypass Panel - ABB 827E Product Manual

DC Input

Refer to Figure 9.
Note: Each input must be fed by a customer supplied 40 amp circuit breaker. Be sure that all power
is turned off before any installation steps are performed.
1. Turn OFF all DC feed circuit breakers (customer supplied, 40A minimum per fully loaded module is required).
2. Refer to Table 2 for recommended wire and terminal sizes for DC connections.
3. Remove rear cover.
4. Remove a conduit knockout from the left side of the plant (as facing the rear of plant) (one is on the back of the
plant, one is on the left, and one is on the bottom). A 2" access hole is provided. Size and install conduit (not
included) for the input wiring in accordance with local code. The bushing for the opening is included in a bag
attached to the system.
5. Attach +BAT cables to +BAT Terminal on individual inverter backplanes via a 1/4" on 5/8" two-hole lug (one
connection per module). Refer to Figure 8 and Figure 9 for +BAT input location. Refer to Table 2 for more details.
6. Attach −BAT cables to −BAT Terminals on individual inverter backplanes via a 1/4" on 5/8" two-hole lug (one
connection per module). Refer to Figure 8 and Figure 9 for −BAT input location. Refer to Table 2 for more details.
7. When the 827E is installed using the maintenance bypass switch and NOT as a Separately Derived System the
GEC Neutral Bond Strap as depicted in Figure 12 must be removed. Refer to NEC Article 100 for definition of a
Separately Derived system. This assumes that the utility neutral connection is bonded to ground. See the
Grounding Electrode Conductor Connections section and Figure 12.
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Figure 7 AC Wiring - with Maintenance Bypass Panel