NORD Drivesystems BU0750 - Manual (Page 148)

NORDAC SK 750E Manual
148 Subject to technical amendments BU 0750 GB-3311
10.4 Electromagnetic compatibility (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 may 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 which are still in preparation.
3. EC Type test certificate This method only applies to radio transmitter equipment.
SK 750E 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 which 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 generaaly available.
Class A, Group1: 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 50081-2 and EN 50082-2 for radiation and interference resistance in industrial environments.
Class B, Group1: 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 50081-1 and EN 50082-1 for radiation and interference resistance.
ATTENTION
NORDAC SK 700E 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.
10.5 EMC limit value classes
NOTE Please note that these limit value classes are only reached if the standard switching frequency
(4/6kHz) is used and the length of the shielded motor cable does not exceed the limits. In addition, it is
essential to use wiring suitable for EMC. (Cable gland)
The motor cable shielding must be applied on both sides (inverter shield angle and the metal motor
terminal box). To comply with Class 3, cable shielding must also be applied at the entry to the housing
of the device (EMC screw connection).