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OVR-15, 27 & 38 LV cabinet Instruction Manual
Temperature (Thermal)
Characteristics (Effect of
Temperature)
Operating temperature also has effect
on battery capacity as rate of discharge
is a function of ambient temperature
for supplied batteries. At 20°C (68°F)
battery capacity is 100%.The capacity
increases slowly above this
temperature and decreases as the
temperature falls. Higher the rate of
discharge, lower is the available
capacity. While raising ambient
temperature increases capacity, it also
reduces useful service life.
Adjacent graph provides the effect of
temperature with on capacity and
service life for ready reference. It is
estimated that battery life is halved for
each 10°C (18°F) above normal room
temperature.
Service life:
Every battery will see reduction in AH
capacity with increasing service life.
General characteristic of the battery
shows that with usage at 20Deg, in 5
years the battery will reach its end of
life (60% of AH capacity) & will need
replacement. Considering the cyclic use
(charge and discharge cycle), higher
ambient temperature at site, for
batteries in recloser control cubicle,
replacement period of 3 years is
recommended.
Service life at various ambient
temperatures
