NORD Drivesystems BU0505 - Manual (Page 170)

SK 54xE – Users Manual for Frequency Inverters
170 BU 0505 GB-1013
8.3 Electromagnetic Compatibility (abbreviation:
EMC)
As of July 2007, all electrical equipment which has an intrinsic, independent function and which is sold
as an individual unit for end users, must comply with
Directive 2004/108/EEC (formerly Directive
EEC/89/336). There are three different ways for manufacturers to indicate 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. EU Type test certificate (This method only applies to radio transmitter equipment.)
NORD frequency inverters only have an intrinsic function when they are connected to other equipment (e.g. with a
motor). The basic 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 EMC standard for power drives EN 61800-3, for use in
secondary environments (industrial) and if not generally available.
Class A, Group 1 ( Þ C2): Interference suppressed, for industrial 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 comply with the basic standards EN 61000-6-2 and EN
61000-6-4 for interference immunity and interference emissions in an industrial environment.
Class B, Group 1 ( Þ C1): 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 61000-6-2 and EN
61000-6-4 for interference immunity and interference emissions.
NOTICE EMC interference
NORD frequency inverters are exclusively intended 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 0)
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8.4 EMC limit value classes
Please note that these limit value classes are only reached if the standard pulse frequency (6 kHz /
from BG8: 4 kHz) 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).