CARR-POW (Carrier Power Supply)
Issue 1 May 2002
8-401555-233-143
DC-Powered Cabinets
DC Power-Distribution Unit (J58890CF-2)
Figure 8-21 shows a power-distribution unit in some DC-powered multicarrier
cabinets. The unit sits at the bottom of the cabinet and contains the ring
generator, 20-Amp circuit breakers, terminal blocks, and system fan power.
Figure 8-21. DC Power-Distribution Unit (J58890CF-2) — Front
Some carriers may contain two power supplies, the 644A and the 645B, that
together supply the required voltages to the carrier. Other carriers may contain
one 649A power supply located on the right side of the carrier. In these systems,
an additional 649A is located on the right of the optional switch node carriers.
4
2
Circuit
Breakers
DC Power
Distribution
Unit
Ring
Generator
Terminal
Block
mcc_dc_1 PDH 062696
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