Check And Connect Commercial Ac Power; Connect Dc Power And Ground To Stratum 3 Clock Cabinet; Connect Clock Cabinet Grounding; Connect Stratum 3 Clock Dc Power - Avaya S8700 Installing Manual

108 Installing the S8700 Multi-Connect
Install the Stratum 3 clock

Check and Connect Commercial AC Power

Before powering up the S8700 Multi-Connect configuration, check the AC power using a
KS-20599 digital voltmeter (DVM) (or equivalent).
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Connect DC Power and Ground to Stratum 3
Clock Cabinet
Provide power for the clock cabinet from the same DC power plant as the S8700 Media Server
for Multi-connect configuration.
Ground the clock cabinet to the DC power plant.

Connect Clock Cabinet Grounding

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Connect Stratum 3 Clock DC Power

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Set the DVM to the 250 volt range.
Carefully measure the voltage between the hot and neutral side of the receptacle. The
neutral wire is white, the hot wire is black.
Verify the meter reads 106 to 128 VAC. If not, have a qualified electrician correct the
problem.
Measure the voltage between the neutral and ground side of the receptacle. The ground
wire is green.
Verify the meter reads 0 VAC. If not, have a qualified electrician correct the problem.
Set all cabinet power modules OFF. Plug the AC power cable into the receptacle.
Measure and cut a 6 AWG (#40) (16 mm
cabinet to the ground discharge bar in the DC power plant.
Insert 1 end of the wire into the ground lug on the clock cabinet and tighten the screw.
Attach the lug to the receptacle cover. Be sure the lug and cabinet ground wires connect
to separate screws on the receptacle cover.
Route the ground wire to the DC power plant and connect to DISCH GRD inside the
cabinet.
Set the clock cabinet circuit breaker at the DC power plant OFF.
At the clock cabinet, connect a 6 AWG (#40) (16 mm
on the terminal strip.
At the clock cabinet, connect a 6 AWG (#40) (16 mm
the terminal strip.
Route the wires out of the cabinet and to the DC power plant.
At the DC power plant, connect the -48V wire to the DC OUTPUT circuit breaker.
At the DC power plant, connect the -48VRTN wire to the DISCH GRD bar.
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) wire long enough to reach from the clock
May 2002
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) ground wire to the -48V terminal
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) wire to the -48VRTN terminal on