extronics iUPS101, Руководство по эксплуатации

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Operating Manual
11
The UPS can be operated with any earthing system. In all cases it is imperative that
the protective earth be connected in compliance with the applicable standards and
regulations. The installer is responsible for the conformity of the installation with the
applicable local standards.
3.2.4 Mobile installation or installation connected to the grid via plug connector
When the input of the device is connected directly to the grid via a plug, the length of
the cable must not exceed 2 m and the plug must remain accessible.
In the absence of voltage at the input, the neutral and live are interrupted, thereby
guaranteeing complete isolation and protection of the cabling upstream of the UPS.
The earthing system downstream of the UPS is determined by the upstream earthing
system when the grid is present. In the absence of the grid, the earthing system
downstream of the inverter is in isolated mode. The safety of the installation is
guaranteed by the equipotential bonding.
Warning! The connection (link) between the neutrals *(C) upstream and
downstream of the UPS is not permitted in this configuration.
*(C) Connection of the neutrals:
In a fixed installation where the neutral is connected to the earth at a single
installation point upstream of the UPS, it is permissible to carry out a connection of
the neutrals in order to preserve an unchanged earthing system downstream,
independent of the operating mode of the UPS. This choice shows the advantage of
keeping the differential protection devices downstream of the UPS.
This connection (C) is not permitted if a socket is installed upstream of the UPS.
This connection type guarantees the optimal continuity for supplying the UPS loads.
The first isolation fault will not lead to an interruption in the supply. If the installation
requires the use of a permanent isolation controller this would have to be deactivated
when the TT network is present at the UPS input
.
Warning! All sockets and protection class I devices connected downstream of the
UPS must be properly connected to the earth (earthed socket). The
cabling rules above remain valid, including fixed installations, in all
cases where the UPS input is connected to the grid via a plug connector.
3.2.5 Fixed Installation
The installation may be equivalent to a mobile installation (with interrupted neutral). In
a fixed installation where the neutral is connected to the earth at a single installation
point upstream of the UPS, it is permissible to carry out a connection of the neutrals
in order to preserve an unchanged earthing system downstream, independent of the
operating mode of the UPS. This choice has the advantage of keeping the protection
devices downstream of the UPS. This connection can be carried out by modifying the
configuration using the control panel.
In this case the appearance of the first fault will lead to the installation stopping or the
disconnection of the protection devices upstream and/or downstream of the UPS.
Safety is guaranteed by the equipotential bonding and by any RCD circuit-breakers
placed downstream.
This connection (C) is not permitted if a socket is installed upstream of the UPS.