Bosch Rexroth EFC 3600 Operating Instructions Manual page 155

DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
● Limit value for 1
of 2 nd
● Designations "class" and "group" according to CISPR 11.
● QP: measuring method quasi peak measurement.
● AV: measuring method arithmetic averaging.
Second Environment, Industrial Area
Facilities not directly connected to a low-voltage mains to supply buildings in residential
areas.
If the limit values in an industrial area separated from public supply by a transformer
station only have to be complied with at the property boundary or in the neighboring
low-voltage mains, the filter might not be necessary. In the vicinity such as measuring
sensors, measuring lines or measuring devices, it is normally required to use the
interference suppression filter.
Increasing the noise immunity of a sensitive device can often be the economically
better solution compared to measures of interference suppression at the drive system
of installation.
First Environment
Environment containing residential areas and facilities directly connected, without
interstage transformer, to a low-voltage mains supplying buildings in residential areas.
Medium-sized manufacturing plants and industrial establishments can be connected to
the public low-voltage mains together with residential buildings. In this case there is a
high risk for radio and television reception if there are not any measures for radio
interference suppression taken. Therefore, the indicated measures are generally
recommended.
Nominal Current of Supply Mains
The nominal current of the supply mains (＞ 100 A or ≤100 A) is specified by the local
power supply company at the connection point of the mains. For industrial companies,
for example, such connection points are the interconnecting stations from the power
supply company.
Since it is impossible to obtain the lower limit values for residential areas with all
applications by means of usual measures (like in the case of large and electrically not
closed installations, longer motor cables or a large number of drives), the following note
included in EN 61800-3 has to be observed.
environment is also relevant, if source of interference
st
environment affects 1
Electromagnetic Compatibility (EMC)
st environment.
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