Studer Innotec SA
VarioString
4
WIRING
The connection of the VarioString charger is an important step of the installation.
It may only be carried out by qualified personnel, aware of the rules and regulations in force.
The installation must always comply with these standards. The cross-sections of the cables
connected to its terminals must comply with local regulations. All cables in use should be
isolated with PVC, TFE, PTFE, FEP, neoprene or polyimide.
Make sure that connections are completely tightened and that each wire is connected at
the right place.
The VarioString is intended to be connected exclusively to a source like a photovoltaic
generator, excluding any other energy source.
It is suitable for charging any type of lead-acid batteries. It is often possible to charge any
other type of battery using proper settings and with the express approval of the battery
supplier.
The connection compartment of the VarioString must remain permanently closed while the
apparatus is operating.
Before opening, check that all voltage sources (battery and PV) have been disconnected
or switched off and wait for at least 5 minutes before opening the equipment. It is imperative
to close the protection cover on the connection terminals after each servicing.
4.1 E
LEMENTS OF THE CABLE COMPARTMENT
No.
Description
Terminal to connect the battery positive
1
pole (M8, 8Nm torque, PG-21 (13-
18mm))
Terminal
to
2
negative pole (M8, 8Nm torque, PG-21
(13-18mm))
Connector (Sunclix) for negative pole of
3
solar generator n°2.
Connector (Sunclix) for positive pole of
4
solar generator n°2.
Connector (Sunclix) for negative pole of
5
solar generator n°1.
Connector (Sunclix) for positive pole of
6
solar generator n°1.
Socket for connection of accessories
7
BTS-01 or ARM-02 (battery temperature
sensor and auxiliary relay module)
Socket for communication cables and
8
the remote control RCC-02/03.
9
Termination switch
10
Configuration switches (DIP-switch)
Real-time clock battery
11
(type CR 2032)
10
connect
the
battery
Comments
This connection must be done using a protection
and disconnection device if the pole has not
been earthed. For mounting of the internal fuse,
refer to sect. 4.2.2
This connection must be done using a protection
and disconnection device if the pole has not
been earthed.
The solar generator wiring must be carried out in
compliance with the voltage and current limits
mentioned on the rating plate.
Only the mentioned original accessories can be
connected to this connector.
RJ45 connector used for connecting equipment
of the Xtender family. These connections must be
carried out only with original Studer cables.
The switch must be placed in position O (towards
(8)) when both connectors are used.
The various possible configurations are described
in sect. 8.1
The equipment is fitted with a battery lasting
about 10 years.
V 1.0
User manual
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