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Cisco Cat alyst 4900M Sw itch Instal lation Guid e
78-18350-02
Chapter 2 Si te Planning
Si te Powe r Requiremen ts
Warning
Ultimate disposal of this product should be handled according to al l national laws and regulations.
Statement 1040
Statement 1040
EMI Recommendations
Fo llow th ese g uidelin es when settin g up the s ite wirin g. When plannin g the lo cation of the new system,
co nsider electro magn etic in terface (EMI), the distance limitation s for sig nalin g, and connecto r
co mpatib ility.
co nsider electro magn etic in terface (EMI), the distance limitation s for sig nalin g, and connecto r
co mpatib ility.
Wh en wires are run for an y significant distance in an electro magn etic field, radio freq uen cy in terference
(RFI) can occur between the field and the signals on the wires.
(RFI) can occur between the field and the signals on the wires.
•
Bad plant wiring can result in radio frequency interference.
•
Strong EMI, especially wh en caused by lightnin g or radio transmitters , can des troy the signal drivers
an d receivers in the s witch and can create an electrical hazard by cond uctin g power surges thro ugh
lines and into equipment.
an d receivers in the s witch and can create an electrical hazard by cond uctin g power surges thro ugh
lines and into equipment.
Note
To predict and remedy stron g EMI, you might need to consu lt RFI experts.
Power Requirements and Heat Dissipation
The power requ iremen ts migh t b e useful for plannin g th e power d istribution sy stem need ed to sup port
the switches. Heat dissipation is an importan t co nsideration for sizing the air-co nditioning requirements
for an installation. Refer to
the switches. Heat dissipation is an importan t co nsideration for sizing the air-co nditioning requirements
for an installation. Refer to
fo r the p ower an d heat ratings for a
Catalyst 4900 M switch .
You will also need to provide power to th e switch with the appropriate AC power cord for your locatio n.
lists the sp ecificatio ns for the AC power cord s th at are available for th e 100 0 W AC-inp ut
power sup ply. The table includes references to illustration s o f the AC power cords.
Table 2-1
1000 W AC-Input Power Supply Power Cords
Loca le
Po wer Cord Pa rt Numbe r
AC Sou rce Plug
Type
Type
Cordset Rating
Power Co rd
Reference
Illustration
Reference
Illustration
Argen tina
CAB-IR2073 -C15-AR=
(was CAB-7KACR=)
IRAM 2073
10 A, 250 VAC
Australia,
New Zealand
CAB-AS3112-C15-AU=
(was CAB-7KACA=)
SAA AS 3 112
10 A, 250 VAC
Continental Euro pe CAB-CEE77-C15-EU=
(was CAB-7KACE=)
CEE 7 /7
10 A, 250 VAC
Italy
CAB-C23 16-C1 5-IT=
(was CAB-7KACI=)
CEI 23-1 6/7
10 A, 250 VAC
North America,
Jap an
Jap an
CAB-US515-C15-US=
(was CAB-7KAC=)
NEMA 5-15
1
13 A, 125 VAC