Product manual

Installation instructions, Modular cabinet power cabling

Technical Product Manual - DCT1800-GAP

TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C

114

Fig. 76 Schematic diagram of powering the modular cabinet by a battery power unit and

7 CLUs/CLU-Ss/SLUs by a 48 Vdc supply

1. Disconnect the power cable (TRENB 101 01) from the modular cabinet and connect the battery

power unit to the modular cabinet using power cable TRE 990 113/850 as shown in figure

77.

2. Remove cable TRENB 101 03 from connectors X112/X113 of the backplane and the PW-BP input

of the MCCB.

3. Connect power cable TRENB 101 01 to the PW-EXT connector on the MCCB. See figure 77 for

the polarity.

4. Connect the power supply at the other end of the cable.

Note:

There are two sets of PW1, PW2 and PW3 terminals; one for backplane powering and one for external

powering.

WARNING

When using the PBX power supply, make sure that the capacity of the

supply is sufficient to power both the PBX and the modular cabinet.

Backplane

Modular

cabinet

Internal

CLUs,

CLU-Ss

or SLUs

48 Vdc

Battery

power

unit

PW-

EXT

PW-

MCCB

061