Extension Of An Existing Installation; Earthing Guidelines - Studer VarioTrack VT-40 User Manual

When they are interconnected by means of the communication cable, the VarioTracks synchronize
automatically in order to get a coherent battery cycle. This synchronisation can be deactivated
using a parameter.
When the devices are in the voltage regulation phase, their currents current may
considerably differ. These differences have no effect at all on the charge quality.
If a VarioTrack is connected to another compatible device (Xtender, VarioTrack,
VarioString, BSP, RCC, Xcom) with the same communication bus, it is highly recommended
to make a software update of all components in the system in order to guarantee all
functionalities.
During the commissioning of the equipment in a multi-unit configuration, the system checks
automatically the compatibility of the software versions and may prevent the operation in
case of incompatibility. An upgrade of the installation must then be carried out by means
of the RCC-02/-03 remote control using the latest manufacturer's software version (read
the user manual for the control and monitoring unit RCC-02/03 to carry out this operation).

4.5.1 Extension of an existing installation

In interconnected installations, if the software is compatible, it is possible to extend an existing
installation by adding one or several (up to 15) VarioTrack units in parallel. The compatibility of the
new units can be checked by Studer Innotec if the serial numbers of the equipment of the existing
installation are provided.
Equipment belonging to the same system must be equipped with the same software
version. Download the latest software version from the manufacturer's website and update
the software for all units of the system before commissioning.
4.6 E
ARTHING GUIDELINES
The VarioTrack is a Class I protection equipment, its metal case must be earthed
by means of the screw provided between the cable gland.
= protective earth (connected to the enclosure of the equipment).
Inside the equipment, the negative poles of the battery and of the PV are
in common. The solar generator (as well as its wiring) must be Class II isolated.
All the other earthing systems (earthing by means of a protection device,
impedance, without earthing or earthed at battery positive pole) require the
whole battery circuit to be protected against electric shocks.
Any accidental contact with the conductive parts of the battery circuit is to be
avoided by providing a Class II protection level.
If the no-load voltage of the panel is above 60V (in all the temperature range), the whole
solar system must be installed according to protection class II.
The cross-section of the earthed cable must not be lower than 16mm
In any case, the protective earth must be connected in accordance with local standards and
regulations in force. The protective earth of the equipment must be connected at least to the
protective earths of all the Class I equipment after and before the VarioTrack (equipotential
connection). The information, notes, recommendations and diagrams reported in this manual are in
any case subject to local installation rules. The installer is responsible for the conformity of the
installation with the local standards in force.
Manuel utilisateur
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Studer Innotec SA
VarioTrack
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