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Demand test descriptions and error codes - Avaya Support

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DC-Powered Cabinets<br />

DC Power-Distribution Unit (J58890CF-2)<br />

CARR-POW (Carrier Power Supply)<br />

Figure 12: DC Power-Distribution Unit (J58890CF-2): Front shows a power-distribution unit in<br />

some DC-powered multicarrier cabinets. The unit sits at the bottom of the cabinet <strong>and</strong> contains<br />

the ring generator, 20-Amp circuit breakers, terminal blocks, <strong>and</strong> system fan power.<br />

Figure 12: DC Power-Distribution Unit (J58890CF-2): Front<br />

DC Power<br />

Distribution<br />

Unit<br />

Circuit<br />

Breakers<br />

4<br />

Terminal<br />

2<br />

Block<br />

Ring<br />

Generator<br />

mcc_dc_1 PDH 062696<br />

Some carriers may contain two power supplies, the 644A <strong>and</strong> the 645B, that together supply the<br />

required voltages to the carrier. Other carriers may contain one 649A power supply located on<br />

the right side of the carrier. In these systems, an additional 649A is located on the right of the<br />

optional switch node carriers.<br />

Figure 13: Typical Multicarrier Cabinet with 649A Power Units shows a typical AC-powered<br />

multicarrier cabinet.<br />

Issue 5 May 2009 259

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