Xtender XTS 900-12 - Battery Cable Cross-Section and DC Protective Devices; Connecting the Battery (Xtender Side)

Studer Innotec SA
Xtender
User manual V4.6.0 20
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.
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 also be as short as possible.
It is always preferable to keep the cable at the negative
pole of the battery as short as possible.
In order to avoid any further loss and protection
redundancy, the XTH does not have an internal fuse.
A protective device (f) must be installed as close as
possible to the battery and sized according to the table
on the left.
The recommended cable cross-sections are valid for
lengths less than 3 m. beyond this length it is strongly
recommended to oversize the battery cables.
For safety reasons, we recommend an annual check on
the tightness of all connections.
In mobile installations, the tightness of the connections
should be checked even more frequently.
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.
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)
In multi-unit systems, all Xtenders from the same system must be connected according to the
same battery bank.
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
Range
Battery
fuse
Cable cross-
section (<3m)
XTS-900-12
100A
25mm
2
XTS 1200-24
80A
25mm
2
XTS-1400-48
50A
16mm
2
XTM-4000-48
200A
50mm2
XTM-2600-48
150A
35mm2
XTM-3500-24
300A
70mm2
XTM-2400-24
200A
50mm2
XTM-2000-12
300A
70mm2
XTM-1500-12
250A
70mm2
XTH-8000-48
300A
95mm2
XTH-6000-48
300A
70mm2
XTH-5000-24
300A
95mm2
XTH-3000-12
350A
95mm2
The cable lugs must be carefully fixed and
tightened sufficiently to guarantee minimum
loss. Insufficient tightening may cause
dangerous heating at the connection point.
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.