User's Manual

Ripwave Base Station I&C Guide Navini Networks, Inc.
204 Part #40-00047-00 Rev D v1.0
February 28, 2003
Generator Receptacle
Typically, enclosures and generators are custom entities. The receptacle that is chosen is
influenced by the generator chosen, the outdoor enclosure, and the customer’s needs. Several
types are used, and we recommend consulting with the generator & enclosure manufacturers.
External Battery Compartment
General:
External battery compartments provide ventilated enclosure space suitable for the installation of
batteries that will allow extended operation of installed electrical and electronic equipment in the
event of the loss of primary electrical power at the site where the cabinet is installed. The use of
an external battery compartment is generally recommended to prevent battery gases from
reaching electronic and electrical equipment located inside a NEMA 4 Type outdoor cabinet.
Construction:
Battery compartments normally utilize NEMA 3R ventilated enclosures to allow venting of
battery gases, and are normally installed beneath a NEMA Type 4 cabinet containing electrical
and electronic equipment and components. The use of a battery compartment usually improves
access for field maintenance personnel by elevating the electrical and electronic equipment
inside the main cabinet to a better working height.
Battery Warmer
The use of a better warming pad is generally recommended for backup power systems utilizing
storage batteries, in climates where air temperatures may drop sufficiently low to reduce the
available capacity of storage batteries or cause the battery to freeze.
Base Extender
The use of a base extender should be considered to elevate the base of the cabinet above a
foundation to prevent the accumulation of water in contact with the cabinet base, or to permit the
accumulation of minor amounts of snow or other debris at a level cabinet base. Depending on the
environment in which the outdoor cabinet is installed, the lack of a base extender may contribute
to accelerated corrosion of the cabinet or allow moisture and debris entry into either the cabinet
or a battery compartment.