EnerSys Alpha Cordex HP 3.0kW, Техническое руководство

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21 0100037-J0 Rev C
7.4 AC Wiring 23" Shelf
7.4.1 AC Feeder Protection/Sizing
To maximize system reliability, each feed should have a dedicated protection feeder breaker located at the AC distri-
bution panel. The feeder breaker can also act as the disconnect device for the connected modules. Refer to section
"3.3.1 Cordex 48-3.0kW Rectifier Shelves" on page 10 for breaker and wire size recommendations.
7.4.2 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 modules are removed from the shelf.
2. At the rear of the shelf, remove screw and flip the cover down (two places) to access the AC input terminal
blocks: each terminal pair corresponds to either two rectifiers or a single rectifier as shown in Figure 9.
3. The wire way is designed for two customer-supplied, 3/4" trade size conduit fittings for the AC supplies located
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 and AC ground terminals (15 in. lbf) and AC ground terminal (35 in. lbf). Refer to
Figure 9 and customer connection drawing #0300057-08 and #0300216-08 at the end of the manual.
5. Tighten the cable connector to the AC cable (conduit similar).
6. Replace rear cover(s) once all connections have been completed.
Single feed for rectifier
slots #1 and #2
Bottom connector: single feed
for rectifier slots #3 and #4
Top connector:
single feed for
rectifier slot #5
Figure 9 — AC Input and Ground for 23" Shelf
AC Ground
AC Ground
Cover
flipped
down
NOTE: Rectifier slot numbers 1 to 5 from the left front of the shelf (for reference only).