Cisco Systems OL-16447-01 manual Installing a DC-Power-Supply Module

Chapter 3 Installing and Removing AC- and DC-Power-Supply Modules

Power-Supply Module Installation

Installing a DC-Power-Supply Module

This procedure is for installing an DC-power-supply module into the PSU 1 power-supply slot. Repeat these steps to install a power-supply module in the PSU 2 power-supply slot.

To connect the switch to a DC-input power source, follow these steps:

1.Preparing for Installation, page 3-9

2.Grounding the Switch, page 3-9

3.Installing the DC-Power-Supply Module in the Switch, page 3-11

4.Wiring the DC-Input Power Source, page 3-12

Warning An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug. Statement 122

Warning Before connecting or disconnecting ground or power wires to the chassis, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. Use a voltmeter to test for 0 (zero) voltage at the power terminals on the chassis. Statement 196

Caution Installation of the equipment must comply with local and national electrical codes.

Note The grounding architecture of this product is DC-isolated (DC-I).

Note We recommend that you use 18 AWG copper wiring for Network Equipment Building Systems (NEBS) installation. This guideline follows the standard guidelines for DC-power wiring in the central office.

Note You can use the grounding lug to attach a wrist strap for ESD protection during servicing.

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