Unicont SPb Ltd
Technical Documentation CH-105
Page 16
12.
Recommendations on setting of charging current
To recharge the accumulator batteries, set the current as recommends by the
manufacturer of these batteries in proper Certificate.
If it is impossible to know the factory charging parameters, the manufacturer of the
battery charger recommends setting the charging current not exceeding 10% of accumulator
battery capacity.
Example of calculation:
At battery capacity (
С)
of 150 Ah the charging current will be equal to
С
150
× 0.1 =
15 A
(This value of current allows to exclude damage of accumulator batteries due to
application of high current.)
13.
Recommendations on setting of charging voltage
Charging voltage
of AB
shall be set by the user in accordance with the documentation
on accumulator battery.
If it is impossible to know the factory values of battery charging voltage, the
manufacturer of battery charger recommends to set charging voltage
of
28.4 V for 24 V batteries
and 14.2 V for 12 V batteries.
(The specified charging voltages are optimum for the majority of ship accumulator
batteries.)
If
ABC
is used without thermal sensor, after the recommended value of charging
voltage is set on the battery charger monitor the battery temperature during the first day and, in
case of obvious overheating of
AB,
reduce the set values of voltage and current until the
optimum thermal conditions are obtained. Installation of thermal sensor is mandatory for use of
helium batteries connected as per buffer circuit (i.e. when the load is supplied from
AB
without
power unit).
CAUTION! In each particular case the manufacturer strongly recommends to use
the documentation of the battery.
