0100037-J0 Rev C
22
7.5 AC Wiring 19" Shelf
For the 19" shelf, AC wiring is fed separately to each of the four rectifiers.
7.5.1 AC Feeder Protection/Sizing
To maximize system reliability it is recommended that, each power module be fed from a dedicated protection
feeder breaker located at the AC distribution panel. The feeder breaker can also act as the disconnect device for the
connected module. Refer to section "3.3.1 Cordex 48-3.0kW Rectifier Shelves" on page 10 for breaker and wire
size recommendations.
7.5.2 AC Input Connections
CAUTION!
To minimize EMI disturbances, route the AC input wires in flexible or rigid conduit and
located as far away as possible from the DC power wires.
WARNING!
Use care when removing or replacing the covers for the AC input connections. Never
assume that an electrical connection or conductor is not energized.
1. Ensure that all rectifier modules are removed from the shelf.
2. At the rear of the shelf, remove the screw and flip the cover down (two places) to access the AC input terminal
blocks. Each terminal pair corresponds to an individual rectifier as marked.
3. The wire way is designed for two customer-supplied, 3/4" trade size conduit fittings on each side of the shelf.
Attach the conduit retainers to the wire way hole(s) and route the AC cables through them.
4. Secure the wires to the AC input connections(torque spec. 15 in. lbf) and AC ground terminal (35 in. lbf) as
shown in drawing #0300040-08 and #0300228-08 at the end of this manual.
5. Tighten the cable connector to the AC cable (conduit similar).
6. Replace rear cover(s) once all connections have been completed.
