EN 55035:2017/A11:2020

IEC/EN 55035 is a new standard and combines the EMC immunity requirements for Information Technology Equipment, consumer electronics such as audio and video equipment, and broadcast equipment within a new multimedia equipment (MME). This standard applies to multimedia equipment (MME) having a rated AC or DC supply voltage not exceeding 600 V. The use of IEC/EN 55035 would be considered part of the requirements needed to show compliance to the EU EMC Directive 2014/30/EU, and is aligned with IEC/EN 55032 for emissions.

This standard will replace the IEC/EN 55024 for Information Technology Equipment and IEC/EN 55020 for consumer electronics. This new standard contains both new tests and modified limit values. Due to technology convergence of the functions of MME, performance criteria shall be determined on a function-orientated basis rather than on an equipment-orientated basis.

A list of the applicable tests that are referenced on IEC/EN 55035 are below:

  • IEC 61000-4-2    Electrostatic discharge immunity test 
  • IEC 61000-4-3    Radiated, radio-frequency, electromagnetic field immunity test
  • IEC 61000-4-4    Electrical fast transient/burst immunity test
  • IEC 61000-4-5     Surge immunity test
  • IEC 61000-4-6    Immunity to conducted disturbances, induced by radio-frequency fields
  • IEC 61000-4-8    Power frequency magnetic field immunity test
  • IEC 61000-4-11    Voltage dips, short interruptions and voltage variations immunity tests
  • IEC 61000-4-20    Emission and immunity testing in transverse electromagnetic (TEM) waveguides
  • IEC 61000-4-21    Reverberation chamber test methods

Note that EMC Technologies has recently expanded its scope to include this test standard to our already extensive accreditation scope.

IEC 61000-4-3:2020 Ed 4.0

IEC 61000-4-3: 2020 is applicable to the immunity requirements of electrical and electronic equipment to radiated RF electromagnetic energy. It establishes test levels and the required test procedures. The object of this standard is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to radiated, radio-frequency electromagnetic fields. The test method documented in this part of the IEC 61000 series describes a consistent method to assess the immunity of an equipment or system against RF electromagnetic fields from RF sources not in the vicinity of the EUT. The test environment is specified in Clause 6.

NOTE Immunity testing against RF sources in close proximity to the EUT is defined in IEC 61000-4-39. Particular considerations are devoted to the protection against radio-frequency emissions from digital radiotelephones and other RF emitting devices. 

This fourth edition cancels and replaces the third edition published in 2006, Amendment 1:2007 and Amendment 2:2010.

This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

  • testing using multiple test signals has been described;
  • additional information on EUT and cable layout has been added
  • the upper frequency limitation has been removed to take account of new services;
  • the characterization of the field as well as the checking of power amplifier linearity of the immunity chain are specified.

CISPR 14-2:2020 Ed 3.0

CISPR 14-2: 2020 specifies the electromagnetic immunity requirements in the frequency range 0 Hz to 400 GHz that apply to appliances, electric tools and similar equipment as specified below, whether powered by AC or DC (including a battery). This document specifies immunity requirements for continuous and transient electromagnetic disturbances, both conducted and radiated. Unless otherwise specified, this document is applicable to all equipment in the scope of CISPR 14-1, namely: household appliances or similar equipment; electric tools; similar equipment; Refer to the Scope of the standard  for examples of equipment.

Included in the scope of this document are also microwave ovens for domestic use or catering.

Equipment which incorporate radio transmit/receive functions are included in the scope of this document. NOTE: For handling cases where equipment under the scope of this document is combined with transmit and/or receive radio functions, see Clause 8.

Excluded from the scope of this document are:

equipment for which all electromagnetic immunity requirements are explicitly formulated in other CISPR or IEC standards; equipment intended to be part of the fixed electrical installation of buildings (e.g. fuses, circuit breakers, cables and switches); medical electrical equipment, including those in the scope of CISPR 14-1; equipment used only in industrial environment; equipment intended to be used exclusively in locations where special electromagnetic conditions exist (e.g. high electromagnetic fields nearby broadcast transmitting stations or high energy pulses nearby power generation stations); equipment intended to be used exclusively on a vehicle, ship, boat or aircraft; the effects of electromagnetic phenomena relating to the safety of apparatus (see IEC 60335 series); Also excluded from the scope of this document is AC single-phase equipment with a rated voltage higher than 250 V between phase and neutral and AC multi-phase equipment with rated voltage higher than 480 V. Abnormal operation of the equipment, such as simulated faults in the electric circuitry for testing purposes, is not taken into consideration.
This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

  • extension of the frequency range for radiated immunity above 1 GHz;
  • an advanced categorization of equipment;
  • revision of general test conditions and addition of new specific test conditions (e.g. for robotic equipment);
  • clarification of requirements applicable to equipment incorporating radio functions; e) addition of requirements for wired network ports; f) revision of definitions and addition of new ones;
  • delete requirements referring to statistical evaluation;
  • alignment with CISPR 14-1, where applicable.

IEC 61000-4-11:2020/COR1:2020 Ed 3.0

This edition includes the following significant technical changes with respect to the previous edition:

  • rise time and fall time of transients are now defined terms in Clause 3;
  • the origin of voltage dips and short interruptions is now stated in Clause 4

CISPR 14-1:2020 Ed 7.0

CISPR 14-1: 2020 specifies the requirements that apply to the emission of radio-frequency disturbances in the frequency range 9 kHz to 400 GHz from appliances, electric tools and similar apparatus as defined below, whether powered by AC or DC (including a battery). This document is applicable to the following equipment:

household appliances or similar equipment; electric tools; similar apparatus. Also included in the scope of this document are separate parts of the above-mentioned equipment such as motors and switching devices (e.g. power or protective relays). However, no emission requirements apply to such separate parts, unless otherwise stated in this document. Products which incorporate radio transmit/receive functions are included in the scope of this document. Equipment under the scope of this document making use of IPT is also in the scope. Excluded from the scope of this document are:

  • equipment for which all emission requirements in the radio-frequency range are explicitly formulated in other CISPR standards; equipment intended to be used only on a vehicle, ship or aircraft;
  • equipment used only in industrial environment the effects of electromagnetic phenomena relating to the safety of the equipment.

Multifunction equipment may be required to comply with clauses in this and other standards. The details are given in 6.5. The emission requirements in this document are not intended to be applicable to the intentional transmissions from a radio transmitter as defined by the ITU including their spurious emissions.

This seventh edition cancels and replaces the sixth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant changes with respect to the previous edition:

  • extension of the frequency range for radiated measurements above 1 GHz;
  • revision of general test conditions and addition of new specific test conditions (e.g. for robotic equipment);
  • introduction of additional requirements for equipment making use of inductive power transfer technology;
  • remove from the normative text any compliance requirement based on statistical evaluation;
  • revision of clicks analysis, with particular relevance to the determination of the observation time and the application of the upper quartile method for different types of click analyzers.

EN/IEC 62311:2020

EN/IEC 62311:2020—the assessment of electronic and electrical equipment and human exposure restrictions for EM fields from 0 Hz to 300 GHz—will come into effect on July 24, 2020. In comparison to the previous version, this version considers non-uniform fields via spatial averaging of field strength/power density for points on the human body. Devices undergoing the certification process may apply for and use this version only if they are unaffected by the changes in this version of the assessment. The chief revisions are as follows.

For unintentional radiators, the conformity assessment for E and H field emissions must now be made according to the highest internal frequency used within the equipment being tested, for equipment operating with the following criteria:

  • If the equipment’s highest internal frequency is <10 kHz, the assessment should be made up to 400 kHz.
  • If the equipment’s highest internal frequency is < 108 MHz, the assessment should be made up to 1 GHz.
  • If the equipment’s highest internal frequency is between 108 MHz and 500 MHz, the assessment should be made up to 2 GHz.
  • If the equipment’s highest internal frequency is between 500 MHz and 1 GHz, the assessment should be made up to 5 GHz.
  • If the equipment’s highest internal frequency is above 1 GHz, the assessment should be made up to five times the internal frequency (or 6 GHz, whichever is greater

This document does not specify limits expressed by means of basic restrictions and/or reference levels. Such limits are subject to the applied assessment scheme, for example by means of regional limits.

This edition includes the following significant technical changes with respect to the previous edition:

  • clear distinction between intentional and unintentional radiators has been introduced;
  • the exposure to non-uniform fields is considered
  • the treatment of uncertainty for the assessment procedures has been improved
  • various summation regimes are described in Annex A;
  • the information from meanwhile published basic standards has been used and hence all informative annexes of the previous edition have been removed.

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