Cisco Catalyst 4500 Series Manual de usuario

CHAPTER

2-1

Catalyst 4500 Series Switches Installation Guide

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Preparing for Installation

Warning

This unit is intended for installation in restricted access areas. A restricted

access area can be accessed only through the use of a special tool, lock and

key, or other means of security. Statement 1017

Warning

Only trained and qualified personnel should be allowed to install, replace, or

service this equipment. Statement 1030

Warning

This equipment must be grounded. 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. Statement 1024

Warning

Class 1 laser product. Statement 1008

Chapter 2 Preparing for Installation

Electrostatic Discharge

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Catalyst 4500 Series Switches Installation Guide 78-14409-08

If you will be using your switch as a PoE source, the following warning applies:

Warning

Voltages that present a shock hazard can exist on inline power circuits if

interconnections are made by using uninsulated exposed metal contacts,

conductors, or terminals. Avoid using such interconnection methods unless the

exposed metal parts are in a restricted access location and users and service

peoplewhoareauthorizedtoaccessthelocationaremadeawareofthehazard.

Arestrictedaccess areacanbe accessed onlythrough theuseofa specialtool,

lock and key, or other means of security. Statement 1072

This chapter describes how to prepare your site for the installation of the switch.

The information is presented in these sections:

•Electrostatic Discharge, page 2-2

•Site Power Requirements and Heat Dissipation, page 2-4

•Power Connection Guidelines for AC-Powered Systems, page 2-5

•Site-Planning Checklist, page 2-16

Note See the Site-Planning Checklist at the end of this chapter to help ensure that you

complete all site-planning activities before you install the switch.

Electrostatic Discharge

Electrostatic discharge is common on Category 5E and Category 6 cabling

systems.

Category 5E and Category 6 cables have higher capacitance than Category 5

cables. As a result, Category 5E and Category 6 cables can store higher voltages

than Category 5 cables and are more prone to damaging networking equipment if

a differential discharge event occur.

Unshielded twisted-pair cables can store high voltages. When these charged

cables are connected to networking equipment, energy is discharged into the

networking equipment; this is known as electrostatic discharge (ESD).

Networking equipment is commonly designed and tested to withstand common

mode ESD events of up to 2000 V. The design for the common mode event is

based on the expectation that the discharge is delivered to all pins of a port at once.

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Chapter 2 Preparing for Installation Electrostatic Discharge

Sometimes, voltage is discharged to some of the pins of the connector and not

others, or to some pins on the connector before others. This is known as a

differential discharge event, which can damage the networking equipment being

connected.

You can take the following measures to prevent ESD cable damage:

•Ground the cable before connecting the networking equipment. You can

create a grounding cable using an RJ-45 patch cable by doing the following:

–

Bare the wires on one end

–

Connect the wires to a suitable and safe earth ground

–

Connect the RJ-45 cable to a female RJ-45 connector

•Briefly connect all cables to the grounded cable before connecting to

networking equipment.

•Leave cables from the networking equipment in the distribution closet

connected to ports at user desktops. After you make connections on either

side of the cable to networking equipment, the cable will not build up charge.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage, which can occur when electronic cards or

components are improperly handled, results in complete or intermittent failures.

Port adapters and processor modules consist of printed circuit boards that are

fixed in metal carriers. Electromagnetic interference (EMI) shielding and

connectors are integral components of the carrier. Although the metal carrier

helps to protect the board from ESD, use a preventive antistatic strap during

handling.

Following are guidelines for preventing ESD damage:

•Always use an ESD wrist or ankle strap and ensure that it makes good skin

contact.

•Connect the equipment end of the strap to an unfinished chassis surface.

•When installing a component, use any available ejector levers or captive

installation screws toproperly seat the bus connectors in the backplane or

midplane. These devices prevent accidentalremoval, provide proper

grounding for the system, and help to ensure that bus connectors areproperly

seated.

Chapter 2 Preparing for Installation

Site Power Requirements and Heat Dissipation

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•When removing a component, use any available ejector levers or captive

installation screws to release the bus connectors from the backplane or

midplane.

•Handle carriers by available handles or edges only; avoid touching the printed

circuit boards or connectors.

•Place a removed component board-side-up on an antistatic surface or in a

static shielding container. If you plan to return the component to the factory,

immediately place it in a static shielding container.

•Avoid contact between the printed circuit boards and clothing. The wrist strap

only protects components from ESD voltages on the body; ESD voltages on

clothing can still cause damage.

•Never attempt to remove the printed circuit board from the metal carrier.

Caution For safety, periodically check the resistance value of the antistatic strap. The

measurement should be between 1 and 10 megohm (Mohm).

Site Power Requirements and Heat Dissipation

This section provides module power requirements and heat dissipation

specifications for the Catalyst 4500 series switches. You should verify site power

before you install the switch.

For more information about power management and planning, refer to the

“Environmental Monitoring and Power Management” chapter in the Catalyst

4500 Series Switch Cisco IOS Software Configuration Guide version appropriate

for your software.

Knowing the power requirements is useful for planning the power distribution

system needed to support the switches. You should consider the heat dissipation

specifications when estimating the air-conditioning requirements for an

installation. For all Catalyst 4500 series switches, supervisor engines, and

switching modules in AC or DC environments see the Catalyst 4500 Series

Module Installation Guide at:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat4000/hw_doc/mod_inst

/0aspecs.htm#wp1012188.

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Chapter 2 Preparing for Installation Power Connection Guidelines for AC-Powered Systems

Power Connection Guidelines for AC-Powered

Systems

This section provides guidelines for connecting the Catalyst 4500 series switch

AC power supplies to the site power source. Basic guidelines include the

following:

•Make sure each chassis power supply has its own dedicated branch circuit.

•Size the circuits according to local and national codes.

•If you are using a 200/240 VAC power source in North America, use a

two-pole circuit breaker to protect the circuit.

•Place the source AC outlet within 6 feet (1.8 meters) of the system and make

sure it is easily accessible.

•Make sure the AC power receptacles used to plug in the chassis are the

grounding type. The grounding conductors that connect to the receptacles

should connect to protective earth ground at the service equipment.

Four types of AC-input power supplies are available:

•1000 W—Table 2-1 lists the AC-input power cord options, specifications,

Cisco part numbers, and shows the different styles of 1000 W AC-input

power cord wall plugs that are available for North America and international

locations as well as the appliance coupler that is attached to the power supply

end of the power cord.

•1300 W—Table 2-1 lists the AC-input power cord options, specifications,

and Cisco product numbers, and shows the different styles of 1300 W

AC-input power cord wall plugs that are available for North America or

various international locations as well as the appliance coupler that is

attached to the power supply end of the power cord.

Note For North America, the power cord plug types and appliance couplers

on the power supplies are different for the 1000 W power supplies and

the 1300 W power supplies; for other countries, the plugs shown are

the same for the 1000 W and 1300 W power supplies.

Chapter 2 Preparing for Installation

Power Connection Guidelines for AC-Powered Systems

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•1400 W—Table 2-1 lists the AC-input power cord options, specifications,

and Cisco product numbers, and shows the different styles of 1400 W

AC-input power cord wall plugs that are available for North America or

various international locations as well as the appliance coupler that is

attached to the power supply end of the power cord.

•2800 W—Table 2-1 lists the AC-input power cord options, specifications,

and Cisco part numbers, and shows the different styles of 2800 W AC-input

power cord wall plugs that are available for North America and international

locations as well as the appliance coupler that is attached to the other end of

the 2800 W power supply power cord.

•4200 W—Table 2-1 lists the AC-input power cord options, specifications,

and Cisco part numbers, and shows the different styles of 4200 W AC-input

power cord wall plugs that are available for North America and international

locations as well as the appliance coupler that is attached to the other end of

the 4200 W power supply power cord.

Table 2-1 AC-Input Power Cord Options

Locale Part Number Length Plug Rating Plug Type

1000 W Power Supply (PWR-C45-1000AC=) Appliance

Coupler

NorthAmerica CAB-7KAC= 8.2 ft (2.5 m) 125 VAC, 15 A NEMA 5-15P

Australia,

New Zealand CAB-7KACA= 8.2 ft (2.5 m) 250 VAC, 15 A SAA/3,

AS/NZS 3112-1993

Europe(except

Italy) CAB-7KACE= 8.2 ft (2.5 m) 250 VAC, 16 A CEE 7/7

120352

120354

120356

120357

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Chapter 2 Preparing for Installation Power Connection Guidelines for AC-Powered Systems

Italy CAB-7KACI= 8.2 ft (2.5 m) 250 VAC, 16 A 1/3/16 CEI 23-16

United

Kingdom CAB-7KACU= 8.2 ft (2.5 m) 250 VAC, 13 A BS 89/13

BS 1363/A

Argentina CAB-7KACR= 8.2 ft (2.5 m) 250 VAC, 10 A IRAM 2073

1300 W (PWR-C45-1300ACV=) and

1400 W (PWR-C45-1400AC=) Power Supplies

Appliance Coupler

NorthAmerica CAB-7513AC= 14 ft (4.3 m) 125 VAC, 20 A NEMA 5-20

Australia,

New Zealand CAB-7513ACA= 14 ft (4.3 m) 250 VAC, 15 A SAA/3,

AS/NZZS 3112-1993

Europe(except

Italy) CAB-7513ACE= 14 ft (4.3 m) 250 VAC, 16 A CEE 7/7

Table 2-1 AC-Input Power Cord Options (continued)

Locale Part Number Length Plug Rating Plug Type

120358

120359

120356

120353

120362

120356

120357

Chapter 2 Preparing for Installation

Power Connection Guidelines for AC-Powered Systems

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Catalyst 4500 Series Switches Installation Guide 78-14409-08

Italy CAB-7513ACI= 14 ft (4.3 m) 250 VAC, 16 A 1/3/16, CEI 23-16

United

Kingdom CAB-7513ACU= 14 ft (4.3 m) 250 VAC, 13 A BS 89/13

BS 1363/A

Argentina CAB-7513ACR= 14 ft (4.3 m) 250 VAC, 10 A IRAM 2073

NorthAmerica

(locking)

200–240 VAC

operation

CAB-AC-2800W-TWLK= 13.6 ft

(4.1 m) 250 VAC, 16 A NEMA L6-20

NorthAmerica

(non-locking)

200–240 VAC

operation

CAB-AC-2800W-6-20 13.2 ft

(4.0 m) 250 VAC, 16 A NEMA 6-20

non-locking

Europe CAB-AC-2800W-EU= 13.2 ft

(4.0 m) 250 VAC, 16 A CEE 7/7

Table 2-1 AC-Input Power Cord Options (continued)

Locale Part Number Length Plug Rating Plug Type

120358

120359

120356120361

120355

120357

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Chapter 2 Preparing for Installation Power Connection Guidelines for AC-Powered Systems

International CAB-AC-2800W-INT= 13.6 ft

(4.1 m) 250 VAC, 16 A IEC 309

2800 W Power Supply (PWR-C45-2800ACV=)

Appliance Coupler

NorthAmerica

(locking)

200–240 VAC

operation

CAB-AC-2800W-TWLK= 13.6 ft

(4.1 m) 250 VAC, 16 A NEMA L6-20

NorthAmerica

(non-locking)

200–240 VAC

operation

CAB-AC-2800W-6-20 13.2 ft

(4.0 m) 250 VAC, 16 A NEMA 6-20

non-locking

Europe CAB-AC-2800W-EU= 13.2 ft

(4.0 m) 250 VAC, 16 A CEE 7/7

International CAB-AC-2800W-INT= 13.6 ft

(4.1 m) 250 VAC, 16 A IEC 309

Table 2-1 AC-Input Power Cord Options (continued)

Locale Part Number Length Plug Rating Plug Type

120360

120353

120361

120355

120357

120360

Chapter 2 Preparing for Installation

Power Connection Guidelines for AC-Powered Systems

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Catalyst 4500 Series Switches Installation Guide 78-14409-08

4200 W Power Supply (PWR-C45-4200ACV=)

Appliance Coupler

North America

120 VAC

operation

CAB-US515P-C19-US 9.8 ft

(2.98 m) 125VAC, 15A NEMA 5-15P

NorthAmerica

(locking)

200–240 VAC

operation

CAB-L620P-C19-US 14 ft (4.2 m) 250 VAC, 20 A NEMA L6-20

NorthAmerica

(non-locking)

200–240 VAC

operation

CAB-US620P-C19-US 13.2 ft

(4.02 m) 250 VAC, 20 A NEMA 6-20

non-locking

Europe CAB-CEE77-C19-EU 13.2 ft

(4.0 m) 250 VAC, 15 A CEE 7/7

International

(including

Argentina and

South Africa)

CAB-I309-C19-INT 13.6 ft

(4.1 m) 250 VAC, 16 A IEC 309

Table 2-1 AC-Input Power Cord Options (continued)

Locale Part Number Length Plug Rating Plug Type

120353

120354

120361

120355

120357

120360

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