Battery Cable Cross-Section And Dc Protective Devices; Connecting The Battery (Xtender Side) - Xtender XTS 900-12 User Manual

Studer Innotec SA
Xtender
Each Xtender is connected directly to the battery through its own protective device (fuse or
circuit breaker. It should never be connected to the output of a DC voltage regulator like
solar regulator, without having the battery as buffer.
All other consumers or sources are connected directly to the battery by their own protective
devices. (See details (f) on Fig. 11-18)
Lead batteries are usually available in 2 V, 6 V or 12 V block types. In the majority of cases, in order
to obtain an operating voltage that is correct for Xtender usage, several batteries must be
connected in series or in parallel depending on the circumstances.
In multi-unit systems, all Xtenders from the same system must be connected according to the
same battery bank.
The XTS is equipped with an electronic protection device protecting it from accidental
reversal of polarity of the battery. This does not exempt of installing a protective device close
to the battery.
The various cabling options are presented in figures 5a-5b (12 V), 5c-5e (24 V) and 6a to 6d (48 V) in
appendix I of this manual.

4.5.1 Battery cable cross-section and DC protective devices

The battery cables must be protected by one of the following measures in all cases:
- protection device (fuse) at each pole
- protection device (fuse) on the pole not connected to the earth
Battery
Range
fuse
XTS-900-12 100A
XTS 1200-24 80A
XTS-1400-48 50A
XTM-4000-48 200A
XTM-2600-48 150A
XTM-3500-24 300A
XTM-2400-24 200A
XTM-2000-12 300A
XTM-1500-12 250A
XTH-8000-48 300A
XTH-6000-48 300A
XTH-5000-24 300A
XTH-3000-12 350A

4.5.2 Connecting the battery (Xtender side)

Insert the cable glands supplied on the battery cable before tightening the cable lugs. Crimp the
cable lugs and fasten the cable gland on the device. Repeat this for the second battery cable. Fix
the battery cables to the appropriate connections "+ Battery" and "- Battery". The M8 screws must be
very well tightened.
On the XTM range, you can insert, if required, a fuse directly on the positive connection to the battery
following the procedure below.
User manual
The battery cables must also be as short as possible.
Cable cross-
It is always preferable to keep the cable at the negative
section (<3m)
pole of the battery as short as possible.
25mm
2
In order to avoid any further loss and protection
25mm
2
redundancy, the XTH does not have an internal fuse.
A protective device (f) must be installed as close as
16mm
2
possible to the battery and sized according to the table
50mm2
on the left.
35mm2
The recommended cable cross-sections are valid for
70mm2
lengths less than 3 m. beyond this length it is strongly
recommended to oversize the battery cables.
50mm2
For safety reasons, we recommend an annual check on
70mm2
the tightness of all connections.
70mm2
In mobile installations, the tightness of the connections
95mm2
should be checked even more frequently.
70mm2
95mm2
95mm2
V4.6.0
The cable lugs must be carefully fixed and
tightened sufficiently to guarantee minimum
loss. Insufficient tightening may cause
dangerous heating at the connection point.
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