Rockwell Automation SB3000 AC Power Modules - Manual (Page 29)

Installation Guidelines 3-1
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Installation Guidelines
This chapter describes the guidelines and wiring recommendations to be followed
when installing High Power SB3000 Power Modules. An installation procedure for the
445A, 890A, and 1335A Power Modules is provided.
3.1 Installation Planning
Use the following guidelines when planning your SB3000 Power Module installation:
SB3000 Power Module current ratings are dependent upon inlet air temperature.
Ratings are given at 40° C (104° F) ambient. Refer to table 1.1 for output current
ratings.
Internal Power Module conditions are monitored by two thermal switches on the
heatsink.
One thermal switch is used to indicate a warning condition (register 203/1203, bit 7,
WRN_OT@) while the other switch is used to indicate a fault condition (register
202/1202, bit 7, FLT_OT@). The thermal warning switch closes at 78° C (172.4° F)
while the thermal fault switch closes at 85°C (185° F). Refer to the SB3000
Configuration and Programming Instruction Manual for more information.
• The relative humidity around the SB3000 Power Module must be kept between
5 and 90% (non-condensing).
• Do not install above 1000 meters (3300 feet) without derating. For every 91.4
meters (300 feet) above 1000 meters (3300 feet), the SB3000 Power Module's
current rating is derated 1%.
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recommendations given in IEC 68 concerning environmental operating conditions.
• Be sure surrounding equipment does not block service access to the SB3000
Power Module.
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bottom of the cabinet and exhaust it through the top of the cabinet. Each cabinet
bay of the SB3000 Power Module has one fan. Allow at least 30 cm (12") above and
2 m (6.6') in front of the SB3000 Power Module for adequate air clearance.
• AC input lead lengths, between the input reactor and the SB3000 Power Module’s
AC input terminals, cannot exceed 100 meters (328 feet).
!
ATTENTION: The user is responsible for conforming with all applicable
local, national, and international codes. Failure to observe this precaution
could result in damage to, or destruction of, the equipment.