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Nortel Networks DCT1900 User Manual

Page 242

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Technical Product Manual - DCT1900

Installation Instructions, Modular Cabinet Connection Board (MCCB) - ROANB 101 28

17-2

Install-DCT1900/R8/mw

© 2000-2005

Fig. 17–1 Power Distribution on the MCCB

Fuses
The MCCB is provided with two fast 15A fuses (see Fig. 17–1 and Fig. 17–3) to protect the
external power supply from short circuit. Only use the following fuses: 7006100123, 250/15A.

DTU Cable Ground Strap Settings
The straps on the MCCB connect the cable shield of the PBX/MCCB coax cables to ground. The
MCCB is delivered with all straps in the ground position (see Fig. 17–2). This setting gives the best
EMC protection.

PW1

PW2

PW3

PW5

PW6

PW7

PW4

PW-EXT

Fuse F1

Fuse F2

Power filter

Power filter

*

)

PW-BP

PW1

PW2

PW7

Backplane power

External power

Ground
bridge

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