Cisco AS5400XM Руководство по установке - Страница 12
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Печатать страницуSupplying Power
Strip a minimum 1/4 in. (0.625 cm) off the wire insulation to connect the stranded wires to the alarm
Step 2
connector. The maximum insulation strip length is 0.31 in. (0.78 cm).
Step 3
Secure the wires to the alarm connector with screws.
The maximum tightening torque on the screws is 7 in.-lb (0.79 N-m).
Caution
Connect the wires to strain relief clamps that are inserted into the holes in the ventilation grid.
Step 4
Note
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 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:
•
•
In a DC power supply installation, do not connect the 48 VDC Return to chassis ground at the
Caution
Cisco AS5400XM universal gateway. A single-point ground is recommended at the power distribution
rack.
The grounding architecture for the Cisco AS5400XM universal gateway is isolated DC return (DC-I).
Note
Do not touch the power supply when the power cord is connected. For systems with a power switch,
Warning
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
This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that
Warning
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
Cisco AS5400XM Universal Gateway Chassis Installation Guide
3-12
See
Appendix C, "Cabling Specifications,"
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.)
Chapter 3
for alarm port cable assembly and port pinouts.
"Power Supply" section on page 1-3
Installing the Cisco AS5400XM Universal Gateway
for more information about the
OL-6418-02