UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close

CEI EN 50121-4

Railway applications - Electromagnetic compatibility Part 4: Emission and immunity of the signalling and telecommunications apparatus

active, Most Current
Buy Now
Organization: CEI
Publication Date: 1 July 2016
Status: active
Page Count: 34
ICS Code (Electromagnetic compatibility in general): 33.100.01
ICS Code (Railway engineering in general): 45.020
ICS Code (Electric traction equipment): 29.280
scope:

This European Standard applies to signalling and telecommunication apparatus that is installed inside the railway environment. Signalling and telecommunication apparatus mounted in vehicles is covered by EN 50121-3-2:2015, signalling and telecommunication apparatus installed inside the substation and connected to substation equipment is covered by EN 50121-5:2015.

This European Standard specifies limits for emission and immunity and provides performance criteria for signalling and telecommunications (S&T) apparatus (including power supply systems belonging to S&T) which may interfere with other apparatus inside the railway environment, or increase the total emissions for the railway environment and so risk causing Electro-Magnetic Interference (EMI) to apparatus outside the railway system.

Apparatus which complies with the emission levels of EN 61000-6-4 will meet the emission requirements of this standard provided that emissions from any DC power port are within the emissions limits specified for AC power ports.

The immunity levels given in this standard apply for

- vital equipment such as interlocking or command and control,

- apparatus inside the 3 m zone,

- ports of apparatus inside the 10 m zone with connection inside the 3 m zone,

- ports of apparatus inside the 10 m zone with cable length > 30 m.

Other apparatus not covered by at least one of these given cases should be in compliance with EN 61000-6-2.

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.

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 requirement in this standard 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.

The standard 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.

Test requirements are specified for each port considered.

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 EN 61000-3-2, EN 61000-3-3, EN 61000-3-11 or EN 61000-3-12 the requirements of those standards also apply.

Testing methods are given in the basic standards listed in Clause 2, Normative references.

These specific provisions are to be used in conjunction with the general provisions in EN 50121-1:2015.

The immunity and emission levels do not of themselves guarantee that the integration of apparatus will necessarily be satisfactory. The standard cannot cover all the possible configurations of the apparatus, but the test levels are sufficient to achieve satisfactory EMC in the majority of cases.

Document History

September 1, 2019
Railway applications - Electromagnetic compatibility Part 4: Emission and immunity of the signalling and telecommunications apparatus
A description is not available for this item.
April 1, 2018
Railway applications - Electromagnetic compatibility Part 4: Emission and immunity of the signalling and telecommunications apparatus
A description is not available for this item.
May 1, 2017
Railway applications - Electromagnetic compatibility Part 4: Emission and immunity of the signalling and telecommunications apparatus
This European Standard applies to signalling and telecommunication apparatus that is installed inside the railway environment. Signalling and telecommunication apparatus mounted in vehicles is...
CEI EN 50121-4
July 1, 2016
Railway applications - Electromagnetic compatibility Part 4: Emission and immunity of the signalling and telecommunications apparatus
This European Standard applies to signalling and telecommunication apparatus that is installed inside the railway environment. Signalling and telecommunication apparatus mounted in vehicles is...
October 1, 2015
Railway applications - Electromagnetic compatibility Part 4: Emission and immunity of the signalling and telecommunications apparatus
This European Standard applies to signalling and telecommunication apparatus that is installed inside the railway environment. Signalling and telecommunication apparatus mounted in vehicles is...
August 1, 2007
Railway applications - Electromagnetic compatibility - Part 4: Emission and immunity of the signalling and telecommunications apparatus
La presente Norma si applica alle apparecchiature di segnalamento e di telecomunicazione installate in ambiente ferroviario. La Norma stabilisce i limiti di emissione e di immunità e fornisce i...
June 1, 2007
Applicazioni ferroviarie, tranviarie, filoviarie e metropolitane - Compatibilità elettromagnetica - Parte 4: Emissione ed immunità delle apparecchiature di segnalamento e telecomunicazioni
La presente Norma si applica alle apparecchiature di segnalamento e di telecomunicazione installate in ambiente ferroviario. La Norma stabilisce i limiti di emissione e di immunità e fornisce i...
May 1, 2001
Applicazioni ferroviarie, tranviarie, filoviarie e metropolitane - Compatibilità elettromagnetica - Parte 4: Emissione ed immunità delle apparecchiature di segnalamento e telecomunicazioni
Questa norma si applica ad apparecchiature di segnalamento e telecomunicazioni installate in ambiente ferroviario. Le apparecchiature di segnalamento e telecomunicazioni montate sui veicoli sono...
December 1, 1997
Applicazioni ferroviarie - Compatibilità elettromagnetica - Parte 4: Emissione ed immunita' delle apparecchiature di segnalamento e telecomunicazioni
La presente serie di Norme sperimentali definisce i limiti di emissione e di immunità per la compatibilità elettromagnetica del sistema ferroviario (incluso quello tranviario, filoviario e...

References

Advertisement