Additional Safety Instructions - Siemens SINAMICS V20 Operating Instructions Manual

1.2

Additional safety instructions

General
Protective earthing conductor current
The earth leakage current of the SINAMICS V20 inverter may exceed 3.5 mA AC. Due to
this, a fixed earth connection is required and the minimum size of the protective earth
conductor shall comply with the local safety regulations for high leakage current equipment.
The SINAMICS V20 inverter has been designed to be protected by fuses; however, as the
inverter can cause a DC current in the protective earthing conductor, if a Residual Current
Device (RCD) is to be used upstream in the supply, observe the following:
• All SINAMICS V20 single phase AC 230 V inverters (filtered or unfiltered) can be
• All SINAMICS V20 three phase AC 400 V inverters (unfiltered) can be operated on a
• SINAMICS V20 three phase AC 400 V inverters (filtered) with rated power up to 2.2 kW
To use a type A RCD, the regulations in this FAQ must be followed: Siemens Web site
1)
(http://support.automation.siemens.com/WW/view/en/49232264)
Safe use of inverters
Any unauthorized modifications of the equipment are not allowed.
Protection in case of direct contact by means of voltages < 60 V (PELV = Protective Extra
Low Voltage according to EN 61800-5-1) is only permissible in areas with equipotential
bonding and in dry indoor rooms. If these conditions are not fulfilled, other protective
measures against electric shock must be applied, for example, protective insulation.
Install the inverter on a metal mounting plate in a control cabinet. The mounting plate has to
be unpainted and with a good electrical conductivity.
It is strictly prohibited for any mains disconnection to be performed on the motor-side of the
system, if the inverter is in operation and the output current is not zero.
SINAMICS V20 Inverter
Operating Instructions, 09/2014, A5E34559884
DANGER
operated on a type A
1)
type B(k) 30 mA RCD.
can be operated on a type B(k) 30 mA RCD. For inverters with rated power over 3.0 kW,
a type B(k) 300 mA RCD can be used.
WARNING
30 mA or type B(k) 30 mA RCD.
Safety instructions
1.2 Additional safety instructions
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