Cisco Systems 3700 Series manual General Site Requirements, Power Supply Considerations

Chapter 2 Preparing to Install the Router

General Site Requirements

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:

•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.)

Table 2-1lists power requirements for Cisco 3700 series routers.

Table 2-1 Power Requirements for Cisco 3700 Series Routers

Router	Power Supply	Input Power	Input Voltage
Cisco 3725	AC	100–240 VAC, 10.0 A, 50–60 Hz	85–264 VAC
	DC, nominal 24/48 VDC	24–36 VDC, 9 A, positive or negative input,	18–72 VDC
		single or dual sources
		36–60 VDC, 4 A, positive or negative input,
		single or dual sources
Cisco 3745	AC	100–240 VAC, 10.0 A, 50–60 Hz	85–264 VAC
	DC, nominal 24/48 VDC	24–36 VDC, 15 A, positive or negative input	18–72 VDC
		36–60 VDC, 7 A, positive or negative input
	DC, nominal 48 VDC	48–60 VDC, 10 A, positive or negative input	38–72 VDC

Cisco 3700 Series Routers Hardware Installation Guide

OL-2180-07 2-3