Setec ST-III Series, Руководство пользователя

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Functional Diagram
ST­III Basics
AC/DC Power Supply: This provides an isolated 13.65Vdc output for powering of
the load and float charging of the battery. Battery current is sensed and monitored
by the power supply to ensure that the maximum charging current is not
exceeded.
Battery Features: The power supply provides full battery management as per the
following.
The power supply is a four stage battery charger with Boost (VBoost = 14.05V),
Float (VFloat = 13.65V), Store (VStore = 13.25V) and Trickle charge modes to
ensure long battery life.
Battery Charging current is limited to a maximum of 10A (ST20­III) and 15A
(ST35­III). This provides optimum life for the batteries.
To charge at the maximum battery charge current above, ensure the load current
plus battery current is equal or less than the maximum output current. The
charging current will be reduced in situations where the difference between the
rated output current and the load current (the available charging current), is less
than the maximum charging current.
Also note that the battery current sense is provided in the “Batt +ve” battery
output. For this feature to work, the load “+ve” and battery “Batt +ve” should not
be cross connected. (Appliances should not be connected to both the “Batt +ve”
and “+ve” terminals of the power supply. Appliances should be connected to the
“+ve” and “­ve” load terminals).
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Figure 1: Functional Block Diagram
AC Input
8 x Load
Outputs
Caravan Battery
AC / DC
Vadj
Battery Low­voltage
Disconnect Circuit
Load Remote­
disconnect Circuit
Remote Load
on/off Input
Battery –Ve
8 x Load
Returns
Car Battery
BAT –VE
BAT +VE
DC IN+VE
–VE
L1 – L8
LOAD SWITCH
BATERY FUSE
LOAD FUSES
0.8 A
Trickle