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C H A P T E R 3
Connecting Power and GroundThis chapter describes how to connect earth ground, DC power, and AC power to the Cisco 10005 router.
The following sections are in this chapter:
• Connecting the Chassis to Ground, page 3-1
• Connecting DC Power to the Cisco 10005 Router, page 3-4
• Connecting AC Power to the Cisco 10005 Router, page 3-10
Connecting the Chassis to GroundConnecting the Cisco 10005 chassis to earth ground is required for all DC powered installations, and any AC powered installation where compliance with Telcordia (formerly Bellcore) grounding requirements is necessary. Have the recommended tools and supplies available before you begin this procedure (see Table 3-1).
Warning Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statemente 93
Tools and Supplies The accessory kit shipped with the Cisco 10005 router contains some items used in this procedure:
• One 2-hole grounding lug (Panduit no. LCD6-10A-L)
• Two M5 screws for the grounding lug
Table 3-1 lists the other tools, equipment, and supplies that you need to connect system ground to the chassis. These are items that you must supply.
Table 3-1 Tools and Supplies
Quantity Description Comments
1 Number 2 Phillips screwdriver —
1 Wire stripping tool Choose a tool that does not nick the wire.
3-1005 Router Hardware Installation Guide
Chapter 3 Connecting Power and Ground Connecting the Chassis to Ground
Attaching the Grounding CableThe following procedure describes how to attach:
• The grounding lug to the grounding cable
• The grounding cable to the chassis
Warning When you install or replace the unit, the ground connection must always be made first and disconnected last. Statement 202
Step 1 Power off the chassis by setting the power switch (or switches) to the Off position.
Step 2 Strip the covering from the end of the grounding wire (Figure 3-1). The amount of covering to be stripped varies depending on the type of lug you plan to attach to the wire.
Varies Grounding wire 6 AWG, 0.1620 in. (4.1148 mm) recommended. The wire should have applicable agency approvals such as Telcordia.
Varies Screws to attach ground wire to grounding point at site
Part requirements depend on location.
1 or 2 2-hole grounding lug. Lug must fit 6 AWG stranded copper or 37/24 flex cables. Each lug must have two holes, centered 0.625 in. (1.587 cm) apart, and must accept M5 screws.
One lug is supplied by Cisco in the accessory kit. The supplied lug is for the router end of the ground wire. You may wish to use a lug other than the one supplied. If you need a lug for the facility end of the ground wire, you must supply it.
Recommended types:
• Panduit no. LCD6-10A-L (1 supplied in accessory kit)
• Panduit no. LCC6-10A-L (long barrel)
• Thomas & Betts no. 256-30695-1183(*4*)
• Burndy no. YA6CL2TC10
1 Crimping tool Must fit diameter of grounding lugs. We recommend that you use a crimping tool recommended by the lug manufacturer.
2 M5 screws with captive, locking washers Included in accessory kit shipped with the Cisco 10005.
Table 3-1 Tools and Supplies (continued)
Quantity Description Comments
Lug Strip Length
Panduit no. LCD6-10A-L (supplied in accessory kit) 13/16 inch (2 cm)
Panduit no. LCC6-10A-L (long barrel) 1 1/16 inch (2.7 cm)
Thomas & Betts no. 256-30695-1183(*4*) 3/4 inch (1.9 cm)
Burndy no. YA6CL2TC10 7/8 inch (2.2 cm)
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Chapter 3 Connecting Power and Ground Connecting the Chassis to Ground
Step 3 Insert the stripped end of the grounding wire into the open end of a lug (Figure 3-1) and crimp the grounding lug securely to the wire. Use the lug manufacturer’s recommended crimping tool and crimping procedure to ensure a proper crimp.
Figure 3-1 Attaching Grounding Wire to Grounding Lug
Step 4 Attach the grounding lug firmly to the threaded holes on the chassis using two M5 screws (Figure 3-2). The holes are located on the left side of the chassis (looking from the rear) near the bottom rear corner. The three threaded holes are unevenly spaced to accommodate different lugs.
Figure 3-2 Connecting Grounding Lug to Chassis
Step 5 Strip the covering from the other end of the grounding wire. Refer to the table in Step 2 for strip lengths for different lugs.
Step 6 Insert the stripped end of the grounding wire into the open end of a grounding lug and crimp the grounding lug securely to the wire.
Step 7 Attach the grounding lug to an appropriate grounding point at your site.
Step 8 Go to one of the following sections to continue the installation:
• If you are connecting DC power to the system, go to the “Connecting DC Power to the Cisco 10005 Router” section on page 3-4.
Grounding lugStripped wire
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Chapter 3 Connecting Power and Ground Connecting DC Power to the Cisco 10005 Router
• If you are connecting AC power to the system, go to the “Connecting AC Power to the Cisco 10005 Router” section on page 3-10.
Connecting DC Power to the Cisco 10005 RouterThis section describes how to connect the Cisco 10005 router to a –48 VDC power source. The power connectors are eurostyle terminal blocks on the PEMs. For full power redundancy, each set of DC power connectors (terminal blocks on each PEM) must be connected to separate power sources. If you do not require power redundancy, you can use the terminal block on only one PEM. Be sure to connect three wires ( –, +, and earth ground) to each PEM that you use.
Note If you are using AC power, see the “Connecting AC Power to the Cisco 10005 Router” section on page 3-10.
Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and the heat can cause serious burns or weld the metal object to the terminals. Statement 43
Note Be sure that you have connected the chassis to earth ground as described in the previous section before beginning this procedure.
Tools and Supplies Table 3-2 lists the tools and supplies that you need to connect the Cisco 10005 router to DC power and ground.
Table 3-2 Tools and Supplies
Quantity Description Comments
1 Flat-blade screwdriver. We recommend a torque-limiting screwdriver.
Blade should measure 1.0 mm thick by 4.0 mm wide. An appropriate screwdriver is available from Phoenix Contact Inc. of Harrisburg, PA, USA.
1 Wire stripping tool Choose a tool that does not nick the internal wire.
2 or 4 Tie wraps —
1 Metric measuring tape or ruler —
1 Marking pen —
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Chapter 3 Connecting Power and Ground Connecting DC Power to the Cisco 10005 Router
Warning Use copper conductors only. Statement 1025
Preparing to Connect Power and GroundTo prepare the power and ground wires to be connected to the Cisco 10005 router.
Warning This product requires short-circuit (overcurrent) protection to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statemente 1045
Step 1 Cut the ends of the power and ground wires so that the ends are straight, not slanted.
Step 2 Measure and strip 0.43 inches (11 mm) of insulation off the end of each DC power and ground wire (Figure 3-3). Trim the end of the insulation so that it is straight, as shown in Figure 3-3, not slanted.
Figure 3-3 Stripping Insulation
Warning Remove the covering from exactly the specified length of each wire. If you strip too much of the covering, exposed wire protruding from the terminal block will create an electrical hazard. If you strip too little of the covering, the wire might not make a good contact with the terminal, or it might not be held securely in place in the terminal block. Statement 235
Step 3 Prepare the other end of each wire to be connected to a DC power source according to the requirements of your site.
Step 4 Connect the power and ground wires to the DC power source or sources.
1 Voltmeter —
3 or 6 (length varies)
6 AWG (recommended) copper wires long enough to reach from the Cisco 10005 chassis to the DC power source.
• Three wires (two power, one ground) are needed for a single DC power source.
• Six wires (four power, two ground) are needed for two DC power sources.
The wires must meet these specifications:
• Conductor size 6 AWG or 8 AWG (6 AWG preferred)
• Diameter:
– Minimum: 3.38 mm
– Maximum: 4.52 mm
• Multistranded copper construction
Table 3-2 Tools and Supplies (continued)
Quantity Description Comments
2668
9
0.43 in.(11 mm)
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Chapter 3 Connecting Power and Ground Connecting DC Power to the Cisco 10005 Router
Connecting DC Ground
Warning When you are installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 202
To attach the grounding wire to the grounding receptacle on the Cisco 10005 DC PEM, perform these steps:
Step 1 Set the DC PEM power switch (or switches) to the Off position.
Step 2 Turn all three screws on the PEM terminal block counterclockwise to fully open the terminal connectors. This step ensures that the correct opening is presented for the wires (Figure 3-4).
Figure 3-4 Positioning the Power and Ground Terminals to Accept Wires
CAUTION: USE COPPER CONDUCTORS ONLY
ATTENTION: N'UTILISEZ QUE DES CONDUCTEURS EN CURVE CAUTION: TERMINALS MAY BE ENERGIZED. TURN OFF POWER SOURCE CIRCUIT
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Chapter 3 Connecting Power and Ground Connecting DC Power to the Cisco 10005 Router
Step 3 Insert the end of the grounding wire into the grounding receptacle, which is the bottom receptacle in the terminal block on the PEM (Figure 3-5).
Figure 3-5 Insert Grounding Wire into Grounding Receptacle
Step 4 Ensure that no copper wire strands are left outside the receptacle.
Step 5 Use the screwdriver to tighten the ground screw in the terminal block to a torque of 1.5 to 1.8 newton meters (13.28 to 15.93 inch-pounds). (Tighten in a clockwise direction.) To avoid breaking the screw, do no exceed 2.3 newton meters.
Step 6 Pull on the wire to ensure that it is held firmly in place.
Step 7 Make sure that the other end of the wire is connected to ground at the DC power source.
Step 8 If you are connecting two power sources to the Cisco 10005 router, repeat this procedure for the second PEM.
Connecting DC Power
Warning Only a DC power source that is isolated from AC mains with reinforced insulation, and that complies with the other safety extra-low voltage (SELV) requirements in UL1950, CSA 950 3rd Edition, EN 60950, and IEC950, can be connected to a Cisco 10005 system. This requirement ensures that in a catastrophic power source fault condition, hazardous voltages are not present on power terminals and connectors. Statement 277
Warning This unit might have more than one power supply connection. All connections must be removed to de-energize the unit.. Statement 1028
To connect DC power to the Cisco 10005 router. Refer to Figure 3-6.
Step 1 Ensure that power in the DC circuit is Off.
CAUTION: USE COPPER CONDUCTORS ONLY
ATTENTION: N'UTILISEZ QUE DES CONDUCTEURS EN CURVE CAUTION: TERMINALS MAY BE ENERGIZED. TURN OFF POWER SOURCE CIRCUIT
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Chapter 3 Connecting Power and Ground Connecting DC Power to the Cisco 10005 Router
Step 2 Ensure that the PEMs are fully inserted into the chassis and secured with their captive screws.
Step 3 Ensure that the circuit breakers on both PEMs are turned to 0 (Off).
Step 4 Turn the + and – screws on the terminal block counter-clockwise to fully open the terminal connectors. This step ensures that the correct opening is presented for the wires (see Figure 3-4).
Step 5 Insert the battery return wire from the external power source into the receptacle labeled + (positive) on the PEM (Figure 3-6). The stripped part of the wire must be fully inserted, so that no bare wire is exposed. Use the screwdriver to tighten the terminal screw to a torque of 1.5 to 1.8 newton meters (13.28 to 15.93 inch-pounds). Tighten the screws clockwise.
Warning The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated. The proper wiring sequence is ground to ground, positive to positive, and negative to negative. The ground wire must always be connected first and disconnected last. Statement 9
Figure 3-6 Connecting Power to the Terminal Block
Step 6 Insert the power lead from the battery –48V power source into the receptacle labeled – (negative) on the PEM. The stripped part of the wire must be fully inserted, so that no bare wire is exposed. Use the screwdriver to tighten the terminal screw to a torque of 1.5 to 1.8 newton meters (13.28 to 15.93 inch-pounds). (Tighten the screws clockwise.)
Step 7 If you are connecting a second power source, repeat Step 5 and Step 6 to wire the second power source to the second PEM.
Step 8 If your chassis contains only one PEM, install a blank faceplate over the empty power bay.
Warning Blank faceplates (filler panels) serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, power modules, and faceplates are in place. Statement 156
CAUTION: USE COPPER CONDUCTORS ONLY
ATTENTION: N'UTILISEZ QUE DES CONDUCTEURS EN CURVE CAUTION: TERMINALS MAY BE ENERGIZED. TURN OFF POWER SOURCE CIRCUIT
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Chapter 3 Connecting Power and Ground Connecting DC Power to the Cisco 10005 Router
Step 9 Secure the power cabling to the chassis by feeding a tie wrap through the slot on the side of the chassis and binding the cables. Dress the cables so that the fan assembly on the right and the air filter on the left can be removed if necessary.
Checking the DC Power ConnectionTo verify that you have correctly connected DC power to the Cisco 10005 chassis:
Step 1 Turn on power to the DC circuit or circuits.
Step 2 Use a voltmeter to check the voltage at the terminal block on the PEM. Connect the voltmeter’s positive contact to the positive (+) terminal on the Cisco 10005 terminal block. Connect the voltmeter’s negative contact to the negative (–) terminal on the Cisco 10005 terminal block. If the power is wired correctly:
• The voltmeter registers approximately +48VDC to +56VDC (or battery float voltage).
• The yellow Fault LED on the PEM lights up.
Warning Do not allow the test probes of the voltmeter to touch each other while they are touching the power terminals. This is an ENERGY HAZARD to you, to the voltmeter, and to the wires connecting the router to its power source.
Step 3 If two PEMs are installed in the chassis, repeat Step 2 for the second PEM.
Step 4 Flip the circuit breakers on the PEMs to | (On). If the power is properly connected:
• The green Power LED lights up on each PEM. The green LED indicates that the PEM is making power available to the chassis in the proper voltage range.
• The yellow Fault LED on each PEM goes out.
• The fans start to turn. A slight delay in fan startup is normal.
Step 5 Flip the circuit breakers back to 0 (Off).
If you are connecting visual or audio alarm indicators to your system, go to the “Connecting Alarm Indicators” section on page 4-1.
If you are not connecting any alarm indicators, go to the “Connecting a Video Terminal to the PRE Console Port” section on page 4-2 to continue the installation.
3-9Cisco 10005 Router Hardware Installation Guide
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Chapter 3 Connecting Power and Ground Connecting AC Power to the Cisco 10005 Router
Connecting AC Power to the Cisco 10005 RouterThe Cisco 10005 router can be powered directly from the facility AC input through the AC power supply module (100 to 240 VAC nominal). The AC power supply is provided with an IEC 320/C20 AC inlet, rated 16A/250V (20A in North America).
Caution The 20A connector on the AC power supply is incompatible with the 15A power strips that are used in many equipment racks. Wiring codes prevent the AC-input power cable from being used with the power strips in equipment racks.
Cisco recommends that you:
• Install proper grounding to avoid damage from lightning and power surges (see the “Attaching the Grounding Cable” section on page 3-2).
• Install an uninterruptible power source (UPS) where possible.
Note When you select a UPS, keep in mind that the Cisco 10005 AC power supply is a power factor corrected (PFC) supply.
Table 3-3 lists the nominal and maximum ranges for source AC power.
Tools and Supplies You need these items to connect the router to an AC power source:
• A number 2 phillips screwdriver
• A power cord
There are five styles of AC power cords available, differing in plug type; make sure you have the correct style for your site (see Table 3-3, Table 3-4, and Figure 3-7.) At the end that plugs into the router, all five AC power cords have the connector shown in Figure 3-8. All AC-input power supply cords measure 14 feet (4.3 meters).
Table 3-3 Source AC Power Specifications
Specifications Nominal ValueAbsolute Maximum Operating Range
AC input voltage 100 to 240 VAC, single phase 90 to 255 VAC
AC input line frequency 50/60 Hz 47 to 63 Hz
AC input current Varies with configuration 15 A @100 VAC7 A @240 VAC
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Chapter 3 Connecting Power and Ground Connecting AC Power to the Cisco 10005 Router
Figure 3-7 AC Plugs—Facility End of AC Power Cord
Figure 3-8 AC Receptacle—Router End of AC Power Cord
Table 3-4 AC Power Cord Options
Plug Type DescriptionPlug (Facility End of Cord)
Receptacle (Router End of Cord) Product Number
North American 120 VAC, 60 Hz AC power cord
NEMA 5-20P, 20A
IEC320-C19 CAB-DS-120VAC
Australian 240 VAC, 50 Hz AC power cord
AS 3112, 10A IEC320-C19 CAB-DS-ACU
European 230 VAC, 50 Hz AC power cord
CEE 7/7, 16A IEC320-C19 CAB-DS-ACE
Italian 220 VAC, 50 Hz AC power cord
CEI 23-16/VII, 10A
IEC320-C19 CAB-DS-ACI
United Kingdom 240 VAC, 50 Hz AC power cord
BS 1363, 13A IEC320-C19 CAB-DS-ACA
North American plugNEMA 5-20P 20A
Australian plugAS 3112 10A
European plugCEE 7/7 16A
Italian plugCEI 23-16/VII 10A
United Kingdom plugBS 1363 13A
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Chapter 3 Connecting Power and Ground Connecting AC Power to the Cisco 10005 Router
Connecting AC PowerTo connect AC power to the Cisco 10005 router:
Step 1 Set the power switch (or switches) to the standby position (Figure 3-9).
Figure 3-9 Setting AC Power Supply Switch to the Standby Position
Step 2 Connect the power cord to the Cisco 10005 AC power supply.
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Chapter 3 Connecting Power and Ground Connecting AC Power to the Cisco 10005 Router
Step 3 Snug up the strain relief device that secures the power cord to the power supply. To do this, tighten the screw underneath the connector (Figure 3-10).
Figure 3-10 Tightening Strain Relief on AC Power Supply
Warning Do not over-tighten the strain relief devices that secure the power cords to the power supplies. Because this chassis cannot be switched off completely, you must disconnect the power cords to remove power from the chassis. The power cord serves as the primary disconnect in an emergency. Statement 262
Step 4 Plug the power cord into the facility AC input receptacle.
When you connect power to the Cisco 10005 router while it is in standby mode, the yellow Fault LED on each power supply lights up.
Step 5 If your system has one power supply, make sure that a cover is installed over the empty power bay.
Warning Blank faceplates (filler panels) serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, power modules, and faceplates are in place. Statement 156
Step 6 If your system has two power supplies, repeat this procedure for the second one.
Step 7 Do not turn on the system power yet.
If you are connecting audio or visual alarm indicators to your system, go to the “Connecting Alarm Indicators” section on page 4-1.
If you are not connecting any alarm indicators, go to the “Connecting a Video Terminal to the PRE Console Port” section on page 4-2 to continue the installation.
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