PS150/CH150 12 V Charging Regulators
3
watchbands, can cause severe burns due to rapid heating and is also a fire
hazard.
VRLA battery manufacturers state that “Heat Kills Batteries”. While the
PS150/CH150 can operate from –40 to 60 °C, optimum battery life is achieved
with battery operating temperatures ranging from 5 to 35 °C
, per
manufacturer’s recommendations
1
. The PS150/CH150 offer temperature
compensation of the battery charging voltage based on a temperature
measurement inside the PS150/CH150 cases. The CH150 internal temperature
measurement likely will not accurately represent battery temperature for charge
voltage compensation unless the battery is in close proximity to the CH150.
With rechargeable batteries, a charge
→
discharge
→
re-charge event is termed
a cycle. In general, the most important factor for the service life of a battery is
depth of discharge
1
. For example, decreasing the depth of each discharge from
100% to 50% approximately doubles the number of useful cycles available
from the battery
1
.
Leaving a lead-acid battery in a discharged state for
prolonged periods of time results in the undesirable
growth of large sulfate crystals (sulfation) that are
detrimental to battery performance.
VRLA batteries self-discharge at approximately 3% of rated capacity per
month at room temperature
1
. A 3% of rated capacity per month self-discharge
results in 100% discharge in approximately 33 months (
≈
3 years) for a battery
stored at room temperature. Self-discharge increasing with increasing storage
temperature.
Periodic recharging of stored batteries every few months is
recommended to prevent irreversible sulfation due to prolonged
time in a discharged state.
3. QuickStart
The PS150/CH150 modules are designed to handle extreme conditions. The
modules have been designed with mounting holes on one-inch centers for
mounting to a standard Campbell Scientific enclosure back plate — see the
enclosure manual for mounting suggestions. See FIGURE
for typical enclosure installations using a PS150/CH150.
i
Genesis Application Manual – Genesis NP and NPX Series US-NP-AM-002,
June 2006.
WARNING
NOTE
