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Cisco 3600 Series Routers Hardware Installation Guide
OL-2056-05
Chapter 2 Preparing to Install the Router
General Site Requirements
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:
• 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 2-1 describes power requirements for Cisco 3600 series routers.
Table 2-1 Power Requirements for Cisco 3600 Series Routers
Router Power Supply Input Power Input Voltage
Tolerance Limits
Cisco 3620 AC 100 - 240 VAC, 1.0 A, 50 - 60 Hz 85 - 264 VAC
DC, nominal 48 VDC 48 - 60 VDC, 3.0 A, positive or negative input 38 - 72 VDC
Cisco 3631 AC 100 - 240 VAC, 2.0 A, 50 - 60 Hz 85 - 264 VAC
DC, nominal 24/48 VDC 24 - 36 VDC, 8 A, positive or negative input 18 - 72 VDC
36 - 60 VDC, 4 A, positive or negative input
DC, nominal 48 VDC 48 - 60 VDC, 4 A, positive or negative input 38 - 72 VDC
Cisco 3640 AC 100 - 240 VAC, 2.0 A, 50 - 60 Hz 85 - 264 VAC
DC, nominal 48 VDC 48 - 60 VDC, 5.0 A, positive or negative input 38 - 72 VDC
Cisco 3660 AC 100 - 240 VAC, 4.0 A, 50 - 60 Hz 85 - 264 VAC
DC, nominal 24/48 VDC 24 - 36 VDC, 16 A, positive or negative input 18 - 72 VDC
36 - 60 VDC, 7 A, positive or negative input
DC, nominal 48 VDC 48 - 60 VDC, 8 A, positive or negative input 38 - 72 VDC