Avaya S8700 - Connecting Mixed AC;DC Power and Ground

122 Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway
December 2003
3 Verify the meter reads 106 to 128 VAC. If not, have a qualified electrician correct the problem.
4 Measure the voltage between the neutral and ground side of the receptacle. The ground wire is
green.
5 Verify the meter reads 0 VAC. If not, have a qualified electrician correct the problem.
6 Set all media gateway power modules OFF. Plug the AC power cable into the receptacle.
Connecting mixed AC/DC power and ground
Figure 36, Typical power and ground for a mixed AC/DC-powered media gateway, on page 122 shows a
power and ground layout for a mixed AC/DC-power MCC1 Media Gateway configuration in the same
equipment room, with the first media gateway being DC powered and the next media gateway being AC
powered. If a third media gateway is part of the configuration, use the same basic connections.
Figure 36: Typical power and ground for a mixed AC/DC-powered media gateway
Figure notes
1 DC power supply
2 Ground Discharge Bar
3 Approved Ground
4 1 AWG up to 50 feet (15.2m) or engineered for
less than 0.5 volt drop per conductor
5 To Coupled Bonding Conductor terminal block
at Main Distribution Frame
6 Coupled Bonding Conductor
7 Media Gateway ground block
8 AC power-distribution unit
9 AC power cord
10 AC power source
-48V -48V RTN
75A
PN PN
-48V
cydfacdi KLC 031202
1
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