Opm Cabinet - Nortel DMS-100 Series Maintenance Manual

1-2 OPM maintenance summary
Optional feature packages for intraswitching NTX156AA and emergency
stand-alone (ESA) operation NTX154AA are available with the OPM.
The OPM is available in two configurations. The configurations are as
follows:
1. The OPM-640. This configuration has a 640 subscriber line capacity
2. The OPM-256. This configuration has a 256 subscriber line capacity
The OPM-256 can have optional components for greater flexibility. Optional
components include the following:
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OPM cabinet

The OPM cabinet provides mechanical protection and a controlled
environment for the OPM electronic equipment. The cabinet contains
13-gauge cold-rolled steel. Special parts like the bay frames and base, use
thicker materials. The base is galvanized to provide additional corrosion
resistance.
The dimensions of the cabinet are 1676 mm wide by 1676 mm high by 660 mm
deep (66 in by 66 in by 26 in). An empty cabinet weighs approximately 400
kg (880 lb). A fully-equipped cabinet that includes electronics and batteries,
weighs approximately 1000 kg (2200 lb).
Main compartment
The main compartment of the OPM contains the RLCM, ac breakers,
rectifiers, batteries and the ECU.
Access the main compartment from the front of the cabinet by a pair of doors
that swing. Each cabinet door:
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A pair of swing-out, double-latched, hinged bays contain most of the
equipment. The hinged bays allow access to the rear of the shelves. The bays
also allow access to equipment positioned against the back wall of the cabinet.
297-8361-550 Standard 04.02 December 2004
NT8X01AA, AB, AC.
NT8X01BA, BB, BC.
a line-size upgrade kit that increases the line size of the OPM-256 to 576
lines
a channel bank option for special services
a fiber interface option for fiber-optic connectivity
is hinged with lock pins that are inside and can be padlocked
opens approximately 120 degrees. A door check holds the door in the open
position
has a door alarm, that is activated when the door is opened