Cisco Catalyst 4500 Series Manuale utente
CHAPTER
2-1
Catalyst 4500 Series Switches Installation Guide
78-14409-08
2
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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Catalyst 4500 Series Switches Installation Guide
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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
2-4
Catalyst 4500 Series Switches Installation Guide 78-14409-08
•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
2-6
Catalyst 4500 Series Switches Installation Guide 78-14409-08
•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
2-8
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
2-9
Catalyst 4500 Series Switches Installation Guide
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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
2-10
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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