Cisco XM Universal Gateways Cisco AS5400XM - Manual (Page 42)

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Cisco AS5400XM Universal Gateway Chassis Installation Guide
OL-6418-02
Chapter 3 Installing the Cisco AS5400XM Universal Gateway
Supplying Power
Step 2 Strip a minimum 1/4 in. (0.625 cm) off the wire insulation to connect the stranded wires to the alarm
connector. The maximum insulation strip length is 0.31 in. (0.78 cm).
Step 3 Secure the wires to the alarm connector with screws.
Caution The maximum tightening torque on the screws is 7 in.-lb (0.79 N-m).
Step 4 Connect the wires to strain relief clamps that are inserted into the holes in the ventilation grid.
Note See Appendix C, “Cabling Specifications,” for alarm port cable assembly and port pinouts.
Supplying Power
The power system consists of a fully redundant switching power supply with two AC (or DC) inputs to
the main power modules. See the
“Power Supply” section on page 1-3 for more information about the
power system.
Check the power at your site to ensure that you are receiving “clean” power (free of spikes and noise).
Install a power conditioner if necessary.
The Cisco AS5400XM universal gateway AC power supply includes the following features:
• The full range of operation is 100 to 240 VAC.
• All units include two 6-foot (1.8-meter) electrical power cords. (A label near the power inlets
indicates the correct voltage, frequency, current draw, and power dissipation for the unit.)
Caution In a DC power supply installation, do not connect the 48 VDC Return to chassis ground at the
Cisco AS5400XM universal gateway. A single-point ground is recommended at the power distribution
rack.
Note The grounding architecture for the Cisco AS5400XM universal gateway is isolated DC return (DC-I).
Warning Do not touch the power supply when the power cord is connected. For systems with a power switch,
line voltages are present within the power supply even when the power switch is off and the power
cord is connected. For systems without a power switch, line voltages are present within the power
supply when the power cord is connected. Statement 4
Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the
phase conductors (all current-carrying conductors). Statement 13