High power performance achieved through enhanced cell processing technology

* High efficiency and reliability
* Electrical connections are sealed and waterproof being resin potted
* Specialised integral frame for Motor home installations
* Industry leading warranty

Functional Description

The BR1 is a shunt regulator designed to limit the maximum voltage to which a lead acid battery can be driven when on charge from a photovoltaic (solar) module or array. It is a simple, low cost, solid state device for use with
photovoltaic modules having a peak current not exceeding 6A.
The unit has very low power consumption and features a
single green, status indicating LED, which is illuminated when
the battery voltage has reached the set-point and the module
output is being shunted.

The circuit for the regulator comprise three main elements, a voltage comparator, a semiconductor switch and a blocking diode. The purpose of
these elements is as follows:

Voltage Comparator
The battery voltage is constantly compared with an internal
reference level and when it reaches the set-point the
semiconductor switch is triggered. The reference set-point voltage is automatically adjusted upwards at lower
temperatures and downwards at higher ones.

Semiconductor Switch
When triggered the switch shunts the solar module/array, diverting
its output away from the battery. When the battery voltage has
decayed by 1.5V (for 12V version) the module/array output is
reconnected to the battery.

Blocking Diode
This is an electronic non-return valve and serves two purposes.
Firstly it ensures the battery cannot discharge through the
module/array at night and secondly that the battery is not shorted
when the regulator shunts the module/array.