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I
nstallation of the second protective earthing cable
R
esidual current protection device
Sensibility
In accordance with article 712.413.1.1.1.2 of Section 712 of IEC Standard 64-8/7, we hereby
declare that, because of their construction, ABB inverters do not inject ground fault direct
currents.
In the case of systems which consist of several inverters connected to a single switch with
differential protection it is recommended that a device is installed which allows the adjustment
of the tripping value and the tripping time.
L
oad protection switch (AC disconnect switch)
Voltage/current rating
Magnetic protection characteristic
Number of poles
The installation of a second earth cable may be required by the
regulations of the country of installation. In making the connection, the
following conditions must be fulfilled:
1. the ground cable must be secured to one of the dedicated connection
points and identified by the symbol
2. use a M6 cable lug .
3. the cable lug must be installed between two toothed washers
4. Secure the cable lug using the screw and the two washers tightening
to a torque of 11Nm.
Based on the requirements of the installation country and plant configuration
could it be necessary to install a residual current protection device to protect
the AC line between the inverter and the grid connection point.
The residual current protection device must meet the following
characteristics:
PVS-50-TL
Type
500mA
To protect the AC connection line of the inverter, an overcurrent protection
device with the following features must be installed:
PVS-50-TL
Type Automatic circuit breaker with differential thermal-magnetic protection
100 A / 400 V
- 61 -
5 - Installation
PVS-60-TL
A / AC
600mA
PVS-60-TL
100 A / 480 V
B/C
3/4
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