Studer Innotec XTH 3000-12 - Manual (Page 15)

Steca Xtender
Installation and Operating Instructions 723.932 Xtender V0.511 Seite 15
4.5.4 E ARTHING THE BATTERY
One of the two battery conductors can be earthed. This may be either the positive or negative
pole. In all cases the installation must conform to the local regulations and usage or specific
standards associated with the application.
In case of earthing, the earthing conductor section must at least be equivalent to the section of
the battery conductor. The earthing of the equipment must also adhere to these regulations. In
this case the use of the additional earthing screw is recommended (fig. 2b (17)), which is located
at the front of the device between the two lower fastening screws.
4.5.5 C ONNECTING THE CONSUMERS AT THE 230 V AC OUTPUT
High voltages may be present on the connection terminals (13) and (14). Make sure that
the inverter is deactivated and that there is no AC or DC voltage present on the AC IN
terminals and battery terminals, before proceeding with the connection.
The 230 V consumers must be connected on the “AC OUT” (14) connection terminals with the
wire section conforming to the standards with regard to the rated current at the Xtender output
(see fig. 1a). Distribution must conform to the local standards and regulations, and generally, be
realised via a distribution table.
The Xtender terminals are marked in the following way:
N = neutral, L = live
= protective earth (connected to the case of the device).
Due to the source backup function (smart boost) the current at the output of the device
may be higher than the rated current of the inverter. It is the sum of the current supplied
by the additional source and the current supplied by the inverter. In this case, the
dimensioning of the output cables will be carried out by adding the current indicated on
the protection device (H) located on the upstream of the unit, to the nominal current of
the inverter. (See fig. 1a and chap. 6.2.7 – p. 21)
If the backup function at the source (smart boost) is not used, the calibre of the protection device
for the output (F) will be established at a maximum value equal to the rated current of the inverter,
or at the maximum value of the protection device at the input (H) if this is exceeds the rated
current of the inverter.
An additional earthing terminal (15) is present between the two fastening screws at the
bottom of the unit. It can be used instead of a connection on the input terminals of the
device, particularly when cable sections are used at the output that do not allow use of a
three-wire cable (live earth and neutral) through the conduit glands of the connection
cables of the input and output (AC IN and AC OUT), where when the earthing of one of
the points of the battery requires a cable section greater than the the PE conductor
section of the AC IN and/or AC OUT line.