General Site Requirements; Power Supply Considerations - Cisco 3700 Series Hardware Installation Manual

Chapter 2 Preparing to Install the Router
Caution For the safety of your equipment, periodically check the resistance value of the antistatic strap. It should
be between 1 and 10 megohms (Mohm).

General Site Requirements

This section describes the requirements your site must meet for safe installation and operation of your
router. Ensure that the site is properly prepared before beginning installation. If you are experiencing
shutdowns or unusually high errors with your existing equipment, this section can also help you isolate
the cause of failures and prevent future problems.

Power Supply Considerations

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.
Warning The device is designed for connection to TN and IT power systems. Statement 1007
The AC power supply includes the following features:
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Table 2-1
Table 2-1 Power Requirements for Cisco 3700 Series Routers
Router Power Supply
Cisco 3725 AC
DC, nominal 24/48 VDC
Cisco 3745 AC
DC, nominal 24/48 VDC
DC, nominal 48 VDC
OL-2180-07
It autoselects either 110 V or 220 V operation.
All units include a 6-foot (1.8-meter) electrical power cord. (A label near the power cord indicates
the correct voltage, frequency, current draw, and power dissipation for the unit.)
lists power requirements for Cisco 3700 series routers.
Input Power
100–240 VAC, 10.0 A, 50–60 Hz
24–36 VDC, 9 A, positive or negative input,
single or dual sources
36–60 VDC, 4 A, positive or negative input,
single or dual sources
100–240 VAC, 10.0 A, 50–60 Hz
24–36 VDC, 15 A, positive or negative input
36–60 VDC, 7 A, positive or negative input
48–60 VDC, 10 A, positive or negative input
Cisco 3700 Series Routers Hardware Installation Guide

General Site Requirements

Input Voltage
85–264 VAC
18–72 VDC
85–264 VAC
18–72 VDC
38–72 VDC
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