Electromagnetic Compatibility; Maintenance - Siemens 1SE0 Operating And Maintenance Manual

4. Electromagnetic
Compatibility
When used for their intended purpose
and operated on electrical supply systems
with features specified (in EN 50160),
the machines satisfy the requirements
of the EU Directive on Electromagnetic
Compatibility 89/336/EU, and IEC 60034-1
Clause 13.
Electromagnetic interference emission:
Note: Very uneven torque (such as
with reciprocating compressor drives)
forces a non sinusoidal motor current,
the harmonics of which can cause both
impermissible reaction on the system and
impermissibly strong electromagnetic
interference emission.
Note: In the case of converter fed
machines, high frequency harmonic
currents in the motor supply leads can
give rise to electromagnetic interference
emission, the magnitude of which
depends upon the converter design (type,
interference suppression measures, and
manufacturer). That is why the use of
shielded supply cables is recommended. In
order to avoid exceeding the limit values
specified in EN 50081 with a converter /
motor drive system, the EMC data provided
by the converter manufacturer should
always be followed. If they recommend
the use of shielded supply cables, the
shielding is most effective if it is connected
over a large area right up to the motor
terminal box (with a metal cable gland). In
the case of motors with built in detectors
(e.g. PTC thermisters), interference
voltages can occur in the detector cables
due to converter related reasons.
12
Electromagnetic interference immunity:
The requirements of immunity to
interference to EN 50082 are in principle,
satisfied by the motors. In the case of
motors with built in detectors (e.g. PTC
thermisters), the operator himself must
provide immunity to interference by
selecting a suitable detector signaling
cables with shielding (similar to the main
motor leads).
Noise while operations with VFD supply:
Motors when used in VFD supply may
exhibit higher noise level due to harmonics
in the supply. Suitable measures should be
employed to reduce this – if required.
5.

Maintenance

Caution
(Environmental Protection)
The disposal of waste generated during
operation & maintenance of the motor
should be done as per the applicable local
environmental legislations.
Caution
(Environmental Protection)
Waste Copper windings during repair
and maintenance - to be collected as
segregated waste and sent to registered
recyclers approved by the respective
State Pollution Control Board.