Lucent Technologies Release 6 manual Connect DC Power and Ground to Stratum 3 Clock Cabinet

DEFINITY Enterprise Communications Server Release 6	Issue 5
Installation and Test for Multi-Carrier Cabinets 555-230-112	May 1998
1 Install and Connect Cabinets
Connect DC Power and Ground to Stratum 3 Clock Cabinet	Page 1-28

Connect DC Power and Ground to

Stratum 3 Clock Cabinet

1.Provide power for the clock cabinet from the same DC power plant as the DEFINITY System.

2.Ground the clock cabinet to the DC power plant.

Connect Clock Cabinet Grounding

1.Measure and cut a 6 AWG (#40) (16 mm2) wire long enough to reach from the clock cabinet to the ground discharge bar in the DC power plant.

2.Insert 1 end of the wire into the ground lug on the clock cabinet and tighten the screw.

3.Attach the lug to the receptacle cover. Be sure the lug and cabinet ground wires are connected to separate screws on the receptacle cover.

4.Route the ground wire to the DC power plant and connect to DISCH GRD inside the cabinet.

Connect Stratum 3 Clock DC Power

1.Set the clock cabinet circuit breaker at the DC power plant OFF.

2.At the clock cabinet, connect a 6 AWG (#40) (16 mm2) ground wire to the -48V terminal on the terminal strip.

3.At the clock cabinet, connect a 6 AWG (#40) (16 mm2) wire to the -48VRTN terminal on the terminal strip.

4.Route the wires out of the cabinet and to the DC power plant.

5.At the DC power plant, connect the -48V wire to the DC OUTPUT circuit breaker.

6.At the DC power plant, connect the -48VRTN wire to the DISCH GRD bar.