Calculating Battery Capacity; Note - Optimus PS-630E Manual De Instrucciones

PS-630E
Power Manager
Since charging current is 8 A maximum, the main battery fuse must be 12 A minimum.
6.7. CALCULATING BATTERY CAPACITY
As mentioned in the Technical Specifications below, battery capacity may be minimum 32 Ah and
maximum 150 Ah. The permissible charging current of the battery manufacturer must be observed.
These limits are predefined on one hand by the charging current (for every battery type always a
maximum charge current is specified) and on the other hand by the charging time, which is
determined in the EN 54‐4 standard. In this standard a charging time of 24 hours for 80% of the
rated capacity is required.
Furthermore, the battery capacity has to be calculated regarding to:
1. The energy demand during a mains failure. Times of system standby and full power condition
have to be considered.
2. Additional consumer loads, who draw current also during mains present condition. These
currents have to be subtracted from the rated charging current of 8 A. Of course, this will increase
the charging time.
6.8. NOTE
In case of present mains power, an output current exceeding 8 A will discharge the battery! The
internal beeper will sound continuously in that case.
PS-630E Version 1.0 Page 8 of 10