IEC 62236-4 pdf free download
IEC 62236-4 pdf free download.Railway applications – Electromagnetic compatibility – Part 4: Emission and immunity of the signalling and telecommunications apparatus.
Other apparatus not covered by at least one of these given cases is in compliance with
IEC 61000-6-2.
If a port is intended to transmit or receive for the purpose of radio communication (intentional radiators, e.g. transponder systems), then the radiated emission requirements in this document are not intended to be applicable to the intentional transmission from a radio- transmitter as defined by the ITU.
Immunity limits do not apply in the exclusion bands as defined in the corresponding EMC related standard for radio equipment.
This document does not specify basic personal safety requirements for apparatus such as protection against electric shock, unsafe operation, insulation co-ordination and related dielectric tests. The requirements were developed for and are applicable to this set of apparatus when operating under normal conditions. Fault conditions of the apparatus have not been taken into account.
The frequency range considered is from DC to 400 GHz. No measurements need to be performed at frequencies where no requirement is specified.
For products in the scope of IEC 61000-3-2, IEC 61000-3-3, IEC 61000-3-11 or IEC 61000-3-12, the requirements of those standards also apply.
These specific provisions are used in conjunction with the general provisions in IEC 62236-1.
5 Emission limits for apparatus
Apparatus which complies with the radiated and conducted emission levels of IEC 61000-6-4 is deemed to meet the emission requirements of this document, provided that the conducted emissions from any DC power port are within the emissions limits specified for AC power ports.
The emissions limits defined in Table 1 shall be complied with. The conducted emission limits shall apply to both AC and DC power ports. Where the apparatus is intended to be used in an environment other than the railway environment, then the emission limits given in the appropriate standards shall apply.
6 Immunity
6.1 Performance criteria
The variety and diversity of the apparatus within the scope of this document makes it difficult to define precise criteria for the evaluation of the immunity test results. Three general levels of performance are therefore used, as defined in IEC 62236-1.
6.2 Immunity requirements
The immunity requirements for apparatus covered by this document are given on a port by port basis.
Test requirements are specified for each port considered.
Tests shall be conducted in a well-defined and reproducible manner. The tests shall be carried out as single tests in sequence. The sequence of testing is optional. The description of the test, the test generator, the test methods and the test set-up are given in the basic standards referred to in Tables 2 to 6.
If the apparatus has a large number of similar ports or ports with many similar connections, then a sufficient number shall be selected to simulate actual operating conditions and to ensure that all the different types of termination are covered (e.g. 20 % of the ports or at least four ports).
The immunity levels given for the apparatus will in most cases allow the apparatus to perform as intended inside the railway environment. The immunity level establishes a common reference for evaluating the performance of the apparatus when subject to interference resulting from direct exposure of the apparatus and associated cables to a radio frequency field, or by coupling of the interference from a remote source.
The contents of the basic standards are not repeated herein; however, additional information needed for the practical application of the tests is given where appropriate.
Voltages induced by traction currents are not treated herein. They have to be covered by the functional specification.
IEC 62236-4 pdf download.
