Vanner SRC12-1200L Owner's Manual - Owner'S Manual - D913482
Owner's Manual - D913482
SRC12-1200L/S INVERTER/CHARGER
10/31/08 - 10:20 AM
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I N C O R P O R A T E D
battery accepts charge, the battery voltage will rise to the charger's Bulk Voltage value, 14.4 VDC for
flooded batteries, or 14.1 VDC for gel batteries. When battery voltage reaches the Bulk Voltage Value the
Bulk Charging Stage is complete. At this point, the battery is approximately 80-percent charged.
10.1.2 Absorption Charge Stage
During Absorption Charge Stage (fixed voltage), the charger's output voltage remains fixed at the Bulk
Charge value and the output current will decrease as the battery becomes fully charged. The Absorption
Stage ends after twenty minutes and the charger advances to the Float Stage.
10.1.3 Float Charge Stage
When the charger enters Float Stage, its output voltage is reduced to the float voltage value 13.2 VDC for
flooded batteries, or 13.6 VDC for gel batteries. This setting is sufficient to keep the battery charged, but not
so high as to boil or over-charge the batteries. The charger will remain in Float Stage until the battery will
accept the Bulk Charge Output Amps selected.
Figure 1
Battery Charging Graph
10.2
AUTOMATIC POWER TRANSFER SWITCH THEORY OF OPERATION
The function of the Automatic Transfer Switch is to automatically accept AC input power from shore or
generator, and use this power to operate inverter loads and to provide power for battery charging. Upon loss
of AC input power, the transfer switch automatically switches the AC loads back to inverter power. Transfer
time is approximately 30 milliseconds (0.030 seconds). The 0.030 second transfer time allows all but the
most sensitive loads to transfer from inverter power to shore power and back to inverter power without
interruption.