Cisco Router ASR 1006 Hardware Installation Manual page 18

Figure 13 Cisco ASR 1006 Router –48V DC Power Supply (ASR1013/06-PWR-DC)
8
7
1 Fan
2 DB-25 alarm connector
3 Tie-wrap tab
4
DC power supply terminal block and plastic cover
5
Earth ground symbol
6
DC power supply ground studs
Read these important notices before you install the DC-input power supply in the Cisco ASR1006 router:
• 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.
• Shielded cables must be used to connect to the DB-25 alarm connector on both the AC and DC power supplies, in order to
comply with FCC/EN55022/CISPR22 Class A emissions requirements.
• For DC input power cables, select the appropriate wire gauge based on the National Electrical Code (NEC) and local codes
for 40-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 straight tongue. They must be able to fit over 1/4-inch terminal studs at 0.625-inch (15.88-mm) centers.
DC input power cables must be connected to the PDU terminal studs in the proper positive (+) and negative (–) polarity.
Note
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 power distribution unit.
• An earth ground cable is required for each DC PDU. We recommend that you use at least 6-AWG multistrand copper wire.
This wire is not available from Cisco Systems; it is available from any commercial cable vendor. The ground wire cable lug
should be dual-hole and able to fit over M6 terminal studs at 0.625 inch (15.88mm) centers. Recommended lug terminal
wire size Panduit part number:
LCD8-14A-L for 8AWG wire size
–
LCD6-14A-L for 6AWG wire size
–
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10
9
-48/-60V 40A
This unit might have more than one power supply connection. All connections must be removed to de-energize the unit.
6 5 4
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11
OUTPUT INPUT
FAIL OK
ALARMS
60V
1A MAX
3 2
7 DC power supply captive screw
8 DC power supply handle
9 Terminal block and plastic cover single screw
10 On/Off (|/O) circuit breaker switch
11 Terminal block and plastic cover slot tab
12 Power supply LEDs
FAN
OK
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