Plugging In Ac Power; Dc Power; Required Input Current - Avaya G650 Installing

If the voltage readings do not measure the values given, the AC outlet is improperly wired. DO NOT
INSTALL THE SYSTEM. Advise the customer to have a licensed electrician correct the problem.
You are now ready to power the system.

Plugging in AC power

Once the ground and voltages have been verified to be correct for the installation, connect to AC power.
Before powering up the system, check the AC power in the equipment room using a KS-20599 digital
voltmeter (DVM) (or equivalent). To check AC power:
1
Verify that the voltage meter reads either 90 to 132 VAC or 180 to 264 VAC by measuring the AC
voltage between the hot and neutral sides of the receptacle. Request that a qualified electrician
correct any problems before proceeding to Step 2.
2
Verify that the voltage meter reads 0 VAC by measuring the voltage between the neutral and
ground sides of the receptacle. Request that a qualified electrician correct any problems before
proceeding to Step 3.
3
Set the AC main circuit breakers to OFF when you finish checking the AC power.

DC power

Figure 12, Typical DC power for a G650,
Gateway.
Each G650 Media Gateway can be equipped with a maximum of two 655A power supplies, one is always
provided in slot 0 and a redundant unit can be supplied in slot 15. DC power is supplied, via a DC feed
cable, to one connector on the backplane of the G650 Media Gateway and bussed to each power supply
slot. AC and DC current can be supplied to the 655A power supplies at the same time. When both AC and
DC current are present, the 655A uses AC first and switches to DC without any interruption in service if
the AC current fails.
Each G650 Media Gateway, with either single or redundant power supplies, draws a maximum of 17
amps of DC current.

Required Input Current

Table 5, G650 Media Gateway worst case current levels,
for a fully-loaded G650 Media Gateway. Each empty slot reduces the required input current by 1/4 A.
Table 5: G650 Media Gateway worst case current levels
VA VDC ADC
667 40 16.7
667 42 15.9
667 48 13.9
667 54 12.4
667 60 11.1
Installing the Avaya G650 Media Gateway
June 2004
on page 48 shows a typical DC power layout for a G650 Media
BTU/
Efficiency PF HR
75.4 0.994 2277
75.4 0.994 2277
75.4 0.994 2277
75.4 0.994 2277
75.4 0.994 2277
on page 47 shows the worst case current levels
Watts
667.1328 Minimum DC plant voltage
667.1328 Low Voltage Disconnect
(LVD) voltage
667.1328 Typical plant voltage
667.1328 Typical plant float voltage
667.1328 Maximum plant voltage
47