Avaya S8700 Maintenance Manual page 1123

CARR-POW (Carrier Power Supply)
DC-Powered Cabinets
DC Power-Distribution Unit (J58890CF-2)
Figure 8-21
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.
DC Power
Distribution
Circuit
Breakers
Figure 8-21. DC Power-Distribution Unit (J58890CF-2)
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.
555-233-143
shows a power-distribution unit in some DC-powered multicarrier
Unit
4
Terminal
2
Block
Ring
Generator
mcc_dc_1 PDH 062696
—
Front
Issue 1 May 2002 8-401