3Com NETBuilder II, Installing Instruction, Page: 70 / 82

A-4 A
PPENDIX
A: F
EATURE
S
UMMARY AND
S
PECIFICATIONS
To determine the total load on the 8-Slot chassis power supply, add the
maximum current consumption of the floppy disk drive, the main processor
module, and each installed I/O module. For the maximum current consumption
of the main processor module and each installed I/O module, refer to each
installation guide.
Extended Chassis Table A-10, Table A-11, and Table A-12 provide a physical description and
electrical and environmental requirements for the Extended chassis. Table A-13
lists the maximum current consumption for the floppy disk drive.
.
* Without cable strain-relief bracket installed.
† Weight includes installed CEC module and eight I/O modules.
®
NETBuilder II
Table A-10 Physical Description of the Extended Chassis
Length
*
Width Height Weight
†
49.2 cm/19.4 in 44.2 cm/17.4 in 55.3 cm/21.0 in 42 kg/91 lbs (one power supply
50 kg/109 lbs (two power supplies)
Table A-11 Electrical Requirements for the Extended Chassis
Parameter Requirement
Input voltage 120 - 230 VAC 47 - 63 Hz
Input voltage
ranges 90 - 132 VAC, or 180 - 264 VAC Either range accepted without user
configuration.
Maximum current
consumption 10 A @ 120 VAC,
5 A @ 230 VAC
Breaker: 13.0 A, 250 V
Input power 1092.5 W @ 120 VAC
Power dissipation 700 W
Heat dissipation 3,730 BTU/hr
Table A-12 Environmental Requirements for the Extended Chassis
Requirement
Parameter Minimum Maximum
Temperature:
Operating 32˚F (0˚C) 122˚F (50˚C)
Nonoperating –4˚F (–20˚C) 140˚F (60˚C)
Altitude:
Operating Sea level 15,000 ft (4,572 m)
Nonoperating Sea level 40,000 ft at 32˚F (12,191
m at 0˚C)
Relative Humidity:
Operating 10% noncondensing 80% noncondensing
Nonoperating 10% noncondensing 90% noncondensing
Acoustic noise 55 db(A)