Nortel DCT1900 Technical Product Manual page 242

Technical Product Manual - DCT1900
Installation Instructions, Modular Cabinet Connection Board (MCCB) - ROANB 101 28
PW-BP
-
PW-EXT
)
+
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.
17-2
Backplane power
*
Ground
bridge
Fig. 17–1 Power Distribution on the MCCB
Fuse F1
Power filter
Fuse F2
Power filter
External power
PW1
PW2
PW7
PW3
PW4
PW5
PW6
PW1
PW2
PW7
Install-DCT1900/R8/mw
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