Alpha Technologies Cordex HP CXRF 48-12kW - Manual (Page 24)

9400000-J0 Rev C 22
1. Ensure that all modules are removed from the shelf.
2. Remove the covers (two places) from the rear of the shelf to expose the AC input terminal blocks, L1 and L2
for each rectifier. (Refer to the customer connections drawing towards the end of the manual for AC terminal
block location.) Each terminal pair corresponds to an individual power module as marked.
3. The wire way is designed for two customer-supplied, 1" 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 chassis ground terminals.
5. Tighten the cable connector to the AC cable (conduit similar).
6. Replace rear cover(s) once all connections have been completed.
7.4 DC Output Connections
WARNING!
Leave cables or bus bars disconnected at the battery and verify the output polarity us-
ing a voltmeter. Make battery connections only after all other wiring is completed.
The DC output wires must be UL approved XHHW or RHH/RHW (RW90 type for Canadian users). Control and
sense wires must be UL approved Style 1015 (TEW type for Canadian users).
The common output leg of the rectifier system must be connected to the ground. This is typically done at the load
common termination point.
7.4.1 Cable
Terminate cable leads with appropriate crimp lugs for 3/8" holes on 1" centers.
Secure the positive and negative to the shelf output post of the correct polarity; i.e., +Vcable to +Vpost. Ensure
the washers are on the bolts in the same order in which they were shipped from the factory. Tighten the bolts as
per Customer Connections drawing at the rear of this manual.
7.4.2 Bus Bar
Do not complete the final live connections to the battery. Leave open and insulate the final connections or remove
the battery fuses. Switch off the battery contacts if used. Refer to the system startup procedure before connect-
ing the batteries online.
Bus bar adapters may be factory-installed, for the option selected, to easily accommodate direct connections to
customers’ vertical bus bars.
Secure the positive and negative to the shelf output post of the correct polarity; i.e., +Vcable to +Vpost. Ensure
the washers are on the bolts in the same order in which they were shipped from the factory. Tighten the bolts as
per Customer Connections drawing towards the end of this manual.
7.3 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.