GUIDE TO THE
REGENERATIVE APPLICATION
SINUS PENTA
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3.11.
Electromagnetic Compatibility
Electromagnetic Compatibility 89/336/CEE and following amendments 92/31/CEE, 93/68/CEE, and
93/97/CEE.
In most systems, the processing control also requires additional devices, such as computers, captors, and so
on, that are usually installed one next to the other, thus causing disturbance:
- Low frequency
– harmonics.
- High frequency
– electromagnetic interference (EMI).
High frequency interference is disturbance or radiated interference with >9kHz frequency. Critical values
range from 150kHz to 1000MHz.
Interference is often caused by commutations to be found in any device, i.e. switching feeders and drive
output modules. High frequency disturbance may interfere with the correct operation of the other devices.
High frequency noise produced by a device may cause malfunctions in measurement systems and
communication systems, so that radio receivers only receive electrical noise. This may cause unexpected
faults.
Standards EN55011 and 50082, as well as standard EN61800-3, define immunity and emission levels
required for devices designed to operate in different environments. The drives manufactured by
ELETTRONICA SANTERNO are designed to operate under the most different conditions, so they all ensure
high immunity against RFI and high reliability in any environment.
The table below defines PDS (Power Drive Systems) of EN 61800-3:2002 (which will become EN61800-3
issue 2).
FIRST ENVIRONMENT
Environment including domestic devices and industrial devices which
are connected directly to a low-voltage mains (with no intermediate
transformer) for domestic usage.
SECOND ENVIRONMENT
Environment including industrial connections different from “First
Environment” connections.
PDS of Category C1
PDS with rated voltage lower than 1000 V to be used in the First
Environment.
PDS of Category C2
PDS with rated voltage lower than 1000 V; if used in the First
Environment, they are intended to be installed and commissioned by
professional users only.
PDS of Category C3
PDS with rated voltage lower than 1000 V to be used in the Second
Environment.
PDS of Category C4
PDS with rated voltage equal to or higher than 1000 V or with a
current equal to or higher than 400A to be used in complex systems
installed in the Second Environment.
