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Before breaking or making direct-current connections, e.g. the charging cable
at the battery, the device be switched off at the mains. Pull out the mains plug.
2
Charging a battery
Explosive gases (oxyhydrogen) are produced if charging is carried out with a
short-circuited battery, or when the power supply is non-operational. Therefore
it is necessary to ensure sufficient external ventilation in the battery space.
Avoid sparks and open flames!
Prerequisites
The battery must have a rated voltage of 12 volt and a minimum capacity of 70
Ah when using the EVS 30/20 DS/IU or 100 Ah when using the EVS 30/30
DS/IU. Insufficient charging takes place if the battery is below this value.
Batteries with a capacity that is too high are charged too slowly.
Attention
Batteries with short-circuited cells must not be charged. Explosion hazard due
to the generation of oxyhydrogen gas!
Charging process
Battery charging proceeds automatically. After a mains failure, the main
charging process is automatically started again. The main charging process
ends when a battery voltage of 14.4 volt is reached. After the post charging
phase, the device switches to holding charge of constant 13.8 volt.
Parallel operation
During parallel operation, user current should be lower than the maximum
charging current 20A when using the EVS 30/20 DS/IU and 30 A when using
the EVS 30/30 DS/IU). This is the only way to ensure that the battery is being
charged even though users are being supplied.