STUDER Innotec
Xtender
34 V.3.1.0
User
manual
Fig. Description
and
comment
9b
Fixed single-phase installation with connection by plug to a three-phase source – AC part
Highlight(s): The connection of the neutral upstream and downstream of the 'Xtender (C)
is prohibited in this configuration (presence of a plug upstream). See also chapter 4.2 – p.
11.
10a
Example of installation in a vehicle (AC part)
Highlight(s): The connection of the neutral (C) is not permitted (presence of a socket
upstream). The earth-neutral connection is absent in inverter mode (neutral stand-alone
system). The safety is guaranteed by the equipotential bonding (frame). The automatic re-
establishment of the earth-neutral connection downstream of the device in inverter mode
can be programmed. Consult the table of figures, item (V).
See also chapter
4.2
– p.
11.
10b
Example of installation in a boat without an isolation transformer (AC part)
Highlight(s): Where there are multiple sources, for example connection to the dock and
on-board generator, a source reverser (X) guaranteeing switching with phase and neutral
interruption must be installed.
10c
Installation example in a boat, with isolation transformer
Characteristic: With several power sources, like shore connection and onboard generator,
a switchover (X) must be installed, to safely switch between the different voltage supplies
with guaranteed interruption of the phase and neutral conductors. Moreover, an earth
must be formed (E) after the isolation transformer.
11
Example of a hybrid installation:
This is the most common system used to establish an emergency system or a hybrid system
(grid-remote sites) ensuring a single-phase supply from a generator and/or the battery.
Highlight(s): In a hybrid installation, the sources for recharging a battery (k-m) are
connected directly to the batterie via their own control system. This does not interfere with
the Xtender charger. See also chapter 4.1.1 – p. 11.
12
Example of parallel connection of 2 or 3 Xtenders
Only Xtenders of the same power output may be connected in parallel.
Wiring precautions: The cable lengths and cross-sections of AC in input (A) and AC out
output (B) must be the same for all inverters in parallel in the same phase.
Variant: The sum of the lengths of the cables (A1) + (B1) of Xtender 1 must be the same as
the sum of the lengths of the cables (A1) + (B1) of Xtender 2, and ditto for Xtender 3
The AC input for each Xtender must be protected individually by a protection device (H)
of the appropriate size.
The protection device at the output of the Xtender (F) can be shared and of appropriate
calibre at the sum of the currents of the devices in parallel.
In a multi-unit system, the functionality dedicated to the command entry (chap.6.2.12
p.25 ) must be the same for every unit. One unit only have to be wired and the function is
applied to every unit of the system.
13
Example of three-phase cabling of 3 Xtenders – three-phase input
Highlight(s): When 3 Xtenders are cabled to form a three-phase grid, the cabled phases
at the input determine the jumper position for selecting the phase (10). It is vital to
determine and select the phase for each Xtender.
See also chapter 6.3.1 – p. 26.
The comments for fig. 12 - 4 to 6 are valid.
14
Example of three-phase cabling of 3 Xtenders – single-phase input
Highlight(s): In a three-phase configuration, if only one phase is available as a source, only
one Xtender will be wired on that source. Phase 2 and 3 will be permanently fed from the
two other units connected only to the battery (not connected to ACin).
It is vital to determine and select the phase for each Xtender.
See also chapter 6.3.1– p. 26.
The comments for fig. 12 are valid.
Summary of Contents for Xtender BTS-01
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