NORDAC SK 5xxE Manual
148
Subject to technical alterations
BU 0500 GB
8.3 Electromagnetic compatibility
Abbreviation: EMC)
All electrical equipment that have an intrinsic, independent function and are placed on the market as individual
units for users from January 1996 must comply with the EEC directive EEC/89/336EEC . There are three
different ways for manufacturers to display compliance with this directive:
1.
EC declaration of conformity
This is a declaration from the manufacturer stating that the requirements in the applicable European standards for the
electrical environment of the equipment have been met. Only those standards which are published in the Official
Journal of the European Community can be cited in the manufacturer’s declaration.
2.
Technical documentation
Technical documentation can be produced which describes the EMC characteristics of the device. This documentation
must be authorised by one of the “Responsible bodies” named by the responsible European government. This makes it
possible to use standards that are still under preparation.
3.
EC type test certificate
(This method only applies to radio transmitter equipment.)
SK 500E/520E/530 frequency inverters only have an intrinsic function when they are connected to other equipment
(e.g. with a motor). The base units cannot therefore carry the CE mark that would confirm compliance with the EMC
directive. Precise details are therefore given below about the EMC behaviour of this product, based on the proviso that
it is installed according to the guidelines and instructions described in this documentation.
Class A, Group 2: General, for industrial environments
Complies with the EMC standard for power drives EN 61800-3, for use in
secondary environments (industrial)
and
if
not generally available.
Class A, Group 1: Interference suppressed, for industrial environments
In this operating class, the manufacturer can certify that his equipment meets the requirements of the EMC directive for
industrial environments with respect to their EMC behaviour in power drives. The limit values correspond to the basic
standards EN 61000--62 and EN 61000-6-4 for interference immunity and interference emissions in industrial
environments.
Class B, Group 1: Interference suppressed for domestic, commercial and light industry environments
In this operating class, the manufacturer can certify that his equipment meets the requirements of the EMC directive for
domestic, commercial and light industry environments with respect to their EMC behaviour in power drives. The limit
values correspond to the basic standards EN 61000--62 and EN 61000-6-4 for interference immunity and interference
emissions.
ATTENTION
NORDAC SK 5xxE Frequency inverters are intended
exclusively for commercial use.
They are therefore not subject to the requirements of the standard EN 61000-3-2 for
radiation of harmonics.
This device produces high frequency interference, which may make additional
suppression measures necessary in
domestic environments
. (Details in Section 8.4)
8.4 EMC limit value classes
Please note that these limit value classes are only reached if the standard pulse frequency (6kHz) is being
used and the length of the shielded motor cable does not exceed the permissible limits.
In addition, it is essential to use wiring suitable for EMC. The motor cable shielding must be applied on both
sides (frequency inverter shield angle and the metal motor terminal box).
