OPERATION
Safety
Correct installation is the most critical factor in ensuring the safe use of
the power supply. If every consideration in the
Installation
section of this
manual has been satisfied the power supply will be safe to operate.
Operating Modes
The BCE4 and BCE5 have three main operating modes:
•
As a battery eliminator it may be used to power equipment requiring
12V –14V at 10Amps. (24 –28V at 5Amps for BCE5). It is fully
protected against overload and short circuit as well as incorporating
over voltage protection.
•
As a lead acid battery charger it will provide safe and convenient
method to restore discharged batteries. Fully charged batteries can
be left connected to the unit indefinitely with no adverse effects on
their lifetime.
•
The full features of the unit are realised when both a battery and a
load are connected so that it operates as a power supply with power
fail protection. Under normal conditions an internal switch connects
the battery in parallel with the load. The average load must be less
than the capability of the power supply to ensure there is a remainder
available to float charge the battery.
When a mains failure occurs, the power supply no longer provides
power. The battery now supports the load without interruption of the
load. Restoration of the mains restarts the power supply which will
resume support of the load and charging of the battery.
During extended mains failures the unit disconnects the battery
before it becomes excessively discharged. The battery is
automatically reconnected when the mains recovers. This feature
contributes to long battery lifetime and allows unattended operation of
a system.
Protection
The power supply incorporates the following protection features
•
Reverse polarity connection of the battery will not cause damage to
the power supply or the battery and the output load will remain
unaffected.
•
Battery fusing is provided in series with battery connection to protect
the load and power supply when it is powered from the battery.
Issue D
Page 5 of 13
