User's Manual

Ripwave Base Station I&C Guide Navini Networks, Inc.
206 Part #40-00047-00 Rev D v1.0
February 28, 2003
Internal Heat Sources
Internal cabinet heat sources primarily consist of installed electrical and electronic equipment
that dissipate waste heat during operation of the BTS equipment. Waste heat may be controlled
to a limited extent by careful selection of electrical and electronic components that operate more
efficiently and thus dissipate less waste heat into the interior of the cabinet.
Equipment Thermal Dissipation
The limiting factor in the operation of the BTS will be the single component or piece of electrical
or electronic equipment installed within the cabinet that is most susceptible to failure as a result
of the internal temperature of the cabinet, whether it is the BTS or another piece of ancillary
equipment. Based on the climate, operating environment, amount and type of equipment
installed within the cabinet, and susceptibility of installed equipment to the internal
environmental conditions within the cabinet, different thermal management solutions may be
required to maintain an acceptable operating temperature range within the cabinet. Cabinet
manufacturers utilize various types of active and passive cooling systems:
• Air Conditioners
• Air to Air Heat Exchangers
• Multiple Wall and Heat Shields
• Forced Air
• Insulation
Airflow
Sufficient airflow must be provided around installed equipment to eliminate hot spots that may
contribute to shortened installed equipment life or failure.