Power Converters; Power Line Cords - Northern Telecom Meridian SL-1 Installation Manual

1-2 Description

Power converters

Power line cords

Appendix 1 to 553-2601-200
1.05 QSD66 PE expansion shelf.
used to expand a QCA144 RPE cabinet to a two- or three-tier cabinet. The
QSD66 is equipped with two PE shelves each capable of accommodating
eight line circuit packs and one peripheral buffer circuit pack.
Note: Although the QSD66 PE expansion shelf provides dual-loop
capabilities, the shelf can only be used in a single-loop mode when
operating with RPE.
1.06 QPC705 Power Converter.
+ 15 V (for SL-1 and digital telephones) and -150 V (for message waiting)
to the PE shelf in the first tier of the cabinet. A QCAD278 cable is required
to connect the QPC705 converter.
1.07 QPC706 Power Converter.
all the required power supplies to each PE shelf in the second and third tiers
of the cabinet. One converter is required for each PE shelf and is installed in
the designated slot on each shelf.
Three commercial power line cords can be used with the QCA144
1.08
RPE cabinet.
(a) A QCAD273 line cord is used when a 115 V 15A power supply is
provided. A NEMA type 5-15R power supply receptacle is required to
accommodate the line cord.
(b) A QCAD274 line cord is used when a 220 V 20A power supply is
provided. A NEMA type L6-20R power supply receptacle is required to
accommodate the line cord.
(c) A QCAD275 line cord is used when a 110 V 30A power supply is
provided. A NEMA type L5-30R power supply receptacle is required to
accommodate the line cord.
Power cords are connected to the rear of the -48 V rectifier in the
1.09
cabinet.
The QSD66 PE expansion shelf can be
The QPC705 power converter supplies
The QPC706 power converter provides