Cisco Systems ASR 1000 Series manual Cisco ASR 1004 Router DC Power Supply

Chapter 5 Cisco ASR 1004 Router Overview and Installation

Connecting Power to Cisco ASR 1004 Router

Figure 5-17 Cisco ASR 1004 Router DC Power Supply

		1		2
			OUTPUT INPUT FAN
			FAIL	OK	OK
			60V
			1A MAX
			OUTPUT INPUT FAN
			FAIL	OK	OK
			60V
			1A MAX
					280185
7	6	5	4	3

1	DC power supply terminal block and plastic	5	DC power supply earth ground symbol
	cover
2	DC power supply LEDs	6	DC power supply On (I)/ Off (O)
3	DB-25 alarm connector	7	DC power supply handle
4	DC power supply fan

Before you begin, read these important notices:

•The color coding of the DC-input power supply leads depends on the color coding of the DC power source at your site. Typically, green or green/yellow is used for ground (GND), black is used for -48V on negative (–) terminal and red is used for RTN on the positive (+) terminal. Make certain the lead color coding you choose for the DC-input power supply matches lead color coding used at the DC power source.

•For DC input power cables, select the appropriate wire gauge based on the National Electrical Code (NEC) and local codes for 60-amp service at nominal DC input voltage (–48/–60 VDC). Three pairs of cable leads, source DC (–) and source DC return (+), are required for each power distribution unit (PDU). These cables are available from any commercial cable vendor. All input power cables for the chassis should have the same wire gauge and cable lengths should match within 10 percent of deviation.

Each DC input power cable is terminated at the PDU by a cable lug. The cable lugs must be dual-hole, and have a 45-degree angle tongue. They must be able to fit over #10 power terminal stud.

Note DC input power cables must be connected to the PDU terminal studs in the proper positive

(+)and negative (–) polarity. In some cases, the DC cable leads are labeled, which is a relatively safe indication of the polarity. However, you must verify the polarity by measuring the voltage between the DC cable leads. When making the measurement, the positive (+) lead and the negative (–) lead must always match the (+) and (–) labels on the PDU.

Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation and Initial Configuration Guide

OL-13208-03 5-25