IEC 61000-6-4:2011 pdf – Electromagnetic compatibility(EMC)- Part 6-4: Generic standards -Emission standard for industrial environments
IEC 61000-6-4:2011 pdf – Electromagnetic compatibility(EMC)- Part 6-4: Generic standards -Emission standard for industrial environments.
NOTE A port generalty intended 10, InterconnectIon of components of an lYE syslem unde, lest (e.g. RS-232,RS-
485. field buses n the scope ol IEC 61158, IEEE Standard 1284 (parallel printer). Universal Serial Bus (USB).
IEEE Standard 1394 (Fire Wire), etc.) and used in accordance with its functional specifications (e.g. to, the
maximum l.nglti of cable connected to it), is not considered to be a t.l.cornmun.cationa port.
port at which a conductor or cable carrying the primary electrical power needed for the operation (functioning) of an apparatus or associated apparatus is connected to the apparatus
public mains network
electricity lines to which all categories of consumers have access and which are operated by a supply or distribution undertaking for the purpose of supplying electrical energy
voltage having a value below a conventionally adopted limit
(1EV 60101-26 modified)
NOTE For the distribution of AC efectric power the upper limit is generally accepted to be 1 000 V.
low voltage AC mains port
port used to connect to the low voltage AC mains supply network to power the equipment
NOTE Equipment with a DC power port i considered low voltage A mains powered lilt, power.d from an ACIOC powel converter.
highest internal frequency
highest fundamental frequency generated or used within the EUT, or the highest frequency at which it operates
FAR Fully Anechoic Room
OATS Open Area Test Site
SAC Semi Anechoic Chamber
TEM Transverse Electromagnetic Mode
4 CondItions during testing
The equipment under test (EUT) shall be tested in the operating mode producing (he largest emission In the frequency band being investigated. e.g. based on limited pre-tests and consistent with normal applications. The configuration of the test sample shall be varied to achieve maximum emission consistent with typical applications and installation practice.
If the apparatus is part of a system, or can be connected to auxiliary apparatus, the apparatus shall be tested while connected to the minimum representative configuration of auxiliary apparatus necessary to exercise the ports in a similar manner to that described in CISPR 11 or CISPR 22.
In cases where a manufacturers specification requires external filtering andlor shielding devices or measures that are clearly specified in the user’s manual, the test requirements of this standard shall be applied with the specified devices or measures in place.
The configuration and mode of operation during the measurements shall be precisely noted in the test report. If the apparatus has a large number of similar ports or ports with many similar connections, a sufficient number shall be selected to simulate actual operating conditions and to ensure that all the different types of termination are covered.
The measurements shall be carried out at one single set of parameters within the operating ranges of temperature, humidity and atmospheric pressure specified for the product and at the rated supply voltage, unless otherwise indicated in the basic standard.
Where applicable, additional information on EUT configuration can be found in the CISPR 16- 2 series and CISPR 11 or CISPR 22.
5 Product documentation
The purchaserluser shall be informed if special measures have to be taken to achieve compliance, e.g. the use of shielded or special cables.
The application of measurements for emission(s) depends on the particular apparatus, its configuration. Its ports, its technology and its operating conditions.
Measurements shall be applied to the relevant ports of the apparatus according to Tables 1 to 3. Measurements shall only be carried out where the relevant ports exist.
It may be determined from consideration of the electrical characteristics and usage of a particular apparatus that some of the measurements are inappropriate and therefore unnecessary. In such a case it is required that the decision and justification not to measure shall be recorded in the test report.
7 Emission requirements
The emission requirements for apparatus covered by this standard are given on a port by port basis.
Measurements shall be conducted in a well-defined and reproducible manner. The measurements may be performed in any order.
The emission requirements for apparatus covered by this standard are given on a port by port basis. The requirements are stated in Tables 1 to 3.
The description of the measurement, the measurement instrumentation, the measurement methods, and the measurement set-up to be used are given In the standards, which are referred to In Tables 1 to 3.