Studer Innotec XTH 3000-12 - Manual (Page 30)

Steca Xtender
Installation and Operating Instructions 723.932 Xtender V0.511 Seite 30
Fig. Description and comment
9a Fixed installation with plug connection to the single-phase source – AC part
Special feature: 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
6.2.11 – p. 23.
9b Fixed single-phase installation with connection by plug to a three-phase source –
AC part
Special feature:
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
6.2.11 – p. 23.
10a Example of installation in a vehicle (AC part)
Special features: 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 4.2.3 – p. 11.
10b Example of installation in a boat without an isolation transformer – AC part
Special feature: 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.
11 Example of a hybrid installation:
This is the most up-to-date system used that enables establishing an emergency system
or a hybrid system (grid-remote sites) ensuring a single-phase supply from a generator
and/or the battery.
Special feature: 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. 9.
12 Example of parallel connection of 2 or 3 Xtenders
Only Xtenders of the same power output may be connected in parallel.
Cabling precautions: The cable lengths and 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 calibre.
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.
If necessary, the ON/OFF remote control (7) will be implemented on only one of the
devices of the installation and suspends or authorises the operation of all the Xtenders in
the installation.
13 Example of three-phase cabling of 3 Xtenders – three-phase input
Special features: 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. 24.
The comments for fig. 12 - 3 to 7 are valid.
14 Example of three-phase cabling of 3 Xtenders – single-phase input
Special feature:
6.3.1 – p. 24.
The comments for fig. 13 are valid.
15 Example of three-phase cabling for input and output with reinforced phase
Special feature: This installation allows a three-phase supply with a reinforced phase The
reinforced phase may be incorporated on two or even three inverters in parallel. The
protection device at the output on which 2 or 3 Xtenders are cabled must be calibrated
according to the sum of the maximum currents of the devices in parallel.
The comments for fig. 12 to 14 are valid.