WhisperGen PPS16 Installation and Commissioning Rev: 080801
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The battery settings are:
•
Battery Capacity
This is the battery capacity in ampere hours, at the 20 hour rate of the battery.
•
Max Battery Discharge
This is the amount the battery can be discharged as a decimal percentage of the
Battery
Capacity
before the
Auto-Charge
function will automatically start the WhisperGen,
charge the battery, and then stop the WhisperGen. The default setting of 0.35 (that is
35%), is usually adequate for most systems.
•
Tail Current
When the battery current reaches the
Tail Current
during charging, the battery is defined
by the WhisperGen as charged.
The default setting for
Tail current
is 0.07 (7%), of the Ampere hour rating of the battery
and this is adequate for most systems. For example: for a 300 Ah battery, when the
battery is at absorbtion voltage and the charging current drops to 21 amps, the battery is
defined as charged, (300 x 0.07 = 21).
•
Absorb Voltage
Warning:
The Absorb Voltage is specific to the battery. Battery manufacturer’s
recommendations shall be followed.
The
Absorb Voltage
is the maximum voltage for the battery during battery charging. The
Absorb Voltage
is specific to the battery.
The default setting is 14.4V for 12V systems and 28.8V for 24V systems. This is usually
adequate for lead acid or gel batteries.
•
Float Voltage
Warning:
The Float Voltage is specific to the battery. Battery manufacturer’s
recommendations shall be followed.
This is the voltage which the battery is held at if the WhisperGen continues running after
the battery has been defined by the WhisperGen as fully charged.
The default setting is 13.8V for 12V systems and 27.6V for 24V systems.
•
Time >14V
This is the maximum time, in hours, that the battery bank can be held above 14V for 12V
systems and 28V for 24V systems, before the battery is considered to be fully charged.
It is a back-up to the
Tail Current
to prevent the battery being held at high voltage if the
load should exactly match the generation capability of the WhisperGen, or an old battery
is being used.
The default setting is 4 hours. It shall be greater for larger batteries and less for smaller
batteries.
•
SelfDisch/Mth
Warning:
The SelfDisch/Mth is specific to the battery and the recommendations of the
battery manufacturer shall be followed.
This is the self-discharge rate of the battery bank expressed as a decimal % per month
when no external load is applied. For example, 0.1 is equal to 10% self discharge per
month. The default setting is 0.05. This is usually adequate for gel batteries. For lead
acid batteries, the value should be increased to 0.10.