Ground And Power Wiring - Tadiran Telecom Coral FlexiCom 6000 Installation Procedure And Hardware Reference Manual

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Coral FlexiCom 6000 Installation Manual

Ground and Power Wiring

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Electrical Hazard! Connect only a Protective Earth (PE) to the Coral system.
DO NOT connect a separate Telecommunications Reference Conductor (TRC).
Resistance from the master ground to the building electrical ground should never
exceed 1.0 ohm. The master ground bar should be located in the switching room as
close as possible to the Coral. Any ground connection of equipment related to the
switching Coral system should ultimately connect to the master ground.
The manufacturer strongly recommends using a stranded three conductor
cable for the earth ground and DC power wiring, to minimize the inductance
of the current path. This cable should be jacketed or enclosed in a wire
conduit which meets local building, electrical, and/or fire codes.
Figure 2-2 illustrates a typical power wiring diagram for a single-cabinet.
illustrates a typical power wiring diagram for two cabinets. Although two cabinets are
shown, the wiring is similar. Internal Power Supplies operate from 48VDC input. MPS
Main External Power Supply/Battery Chargers operate from 115/230VAC input and
supply 48VDC nominal output to the Coral system and optional stationary battery
plant. Stationary battery plants are highly recommended.
Wiring Procedure
1. Power cables may be routed from above the Coral cabinet through a cable
entry point in the left rear corner of the cabinet top, or from below through a
similar entry point in the rear left corner of the cabinet bottom. Determine
whether cables should be routed from the top or bottom of the cabinet.
Figure 2-4 illustrates the possible power cable routing through the cabinet.
2. Release the two locking screws from the power input cavity and remove the
cover and retain it. Also remove the cable clamps and retain them, see
Figure 2-5.
Figure 2-3
Hardware Installation Procedure
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