GSR 36/48V
Technical manual
Model 36/48
GSR 36/48V
GSR 36/48 is a control circuit for photovoltaic (PV) panels to
battery charge. GSR 36/48 V implement PV panels step up
tension circuit (
Step-up
) it can so work with PV panels having
a working voltage inferior to the voltage of the battery. In fig. 1
it is possible to find a complete GSR 36/48 V scheme.
The charging circuit of the battery makes the PV module work
in the maximum power point in a voltage range from 2.0V
down to a voltage close to the battery voltage . The battery can
be both 36V and 48V, and the voltage can be changed using a
switch.
The GSR 36/48 can be configured to charge lead-acid batteries
(charge - end voltage, temperature compensated) and lithium-
ion battery (LiFePo) and in this case applies a constant charge -
end voltage with temperature.
There is a LOAD terminal that can be used to control the
activation of an external load at the same voltage of the
battery with a maximum current of 5A.
The LOAD terminal can be configured using a dip switch to
fuction for 24 h/day or it can be set to function only at night
(SW3).
The LOAD terminal doesn't function in case of low battery
(voltage lower than the low-battery signal- see Tab 3).
Two LEDs on the GSR 36/48 indicate the operational status of
the system , a green LED indicates the charging current
delivered to the battery , while an amber/red LED indicates a
low battery condition or overtemperature (see Tab.2).
•
MPPT step-up recharge
•
Large tension range on panel
entrance V
p
= 2.0V –V
batt
•
Battery tension 36V / 48V with
dipswitch sortable
•
For Pb and Lithium ions batteries
with dipswitch sortable
•
Temperature compensated Charge
voltage
•
Over temperature protection
•
Protection for battery polarity
inversion
•
Case in ABS.
This document is the property of
Giocosolutions S.r.l.
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