Electromagnetic Compatibility Of Variable-Speed Drives - Siemens SINAMICS G120 Installation Manual

Permissible line supplies dependent on the installation altitude
● For installation altitudes ≤ 2000 m above sea level, it is permissible to connect the
converter to any of the line supplies that are specified for it.
● For installation altitudes 2000 m ... 4000 m above sea level, the following applies:
– Connection to a TN line system with grounded neutral point is permissible.
– TN systems with grounded line conductor are not permitted.
– The TN line system with grounded neutral point can also be supplied using an
– The phase-to-phase voltage does not have to be reduced.
Note
Using Power Modules connected to TN line supplies with voltages ≥ 600 V for installation
altitudes 2000 m ... 4000 m
For voltages ≥ 600 V, the TN line supply must have a grounded neutral point established
using an isolating transformer.
6.8

Electromagnetic compatibility of variable-speed drives

EMC (electromagnetic compatibility) means that the devices function satisfactorily without
interfering with other devices and without being disrupted by other devices. EMC applies
when the emitted interference (emission level) and the interference immunity are matched
with each other.
The product standard IEC/EN 61800-3 describes the EMC requirements placed on
"Variable-speed drive systems".
A variable-speed drive system (or Power Drive System PDS) consists of the converter as
well as the associated electric motors and encoders including the connecting cables.
The driven machine is not part of the drive system.
Note
PDS as component of machines or systems
When you install PDS into machines or systems, additional measures may be required so
that the product standards of these machines or systems is complied with. The machine or
system builder is responsible for taking these measures.
Power Module PM240-2
Hardware Installation Manual, 01/2020, A5E33294624B AL
isolation transformer.
6.8 Electromagnetic compatibility of variable-speed drives
Technical data
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