What is CISPR 14?

CISPR 14 is the EMC standard for household appliances, electric tools, and similar apparatus that has two parts: CISPR 14-1 and CISPR 14-2. Let’s discuss what are CISPR 14-1 and CISPR 14-2.

What is CISPR 14-1?

CISPR 14-1 is an EMC emission standard that specifies emission limits and methods of measurement of radio frequency disturbance emitted from household appliances, electric tools, and similar apparatus, whether powered by AC or DC (including a battery). Currently, the seventh edition of this standard (CISPR 14-1:2020, published in 2020) is available and valid.

The CISPR 14-1 EMC emission measurement standard specifies the EMI emission limits (conducted & radiated), methods of measurements, test procedure, and other related details for emission measurement tests. The standard covers a frequency range of 9 kHz to 400 GHz. This standard ensures that the household appliances, electric tools, and similar apparatus that complies with this standard do not emit more than the EMI emission limit specified in this standard and do not interfere with other devices or systems in the same environment.

The standard also includes the products which incorporate radio transmit/receive functions and the equipment making use of IPT (inductive power transfer technology).

The scope of the document excluded the following:

• The equipment/apparatus for which all EMC emission requirements in the radio-frequency range are explicitly formulated in other CISPR standards;
• Equipment used only on a vehicle, ship, or aircraft;
• Equipment used only in the industrial environment;
• The effects of electromagnetic phenomena relating to the safety of the equipment are excluded from this document.

Multifunction equipment may be required to comply with clauses in this document and other standards; details are provided in 6.5 of this document. This document's emission requirements do not apply to any deliberate transmissions from a radio transmitter, as defined by the ITU (International Telecommunication Union) including their spurious emissions. The seventh edition (CISPR 14-1:2020) supersedes the sixth edition published in the year 2016. The seventh edition features significant technical changes from the previous edition, which are listed below.

• For radiated measurements, this document extends the frequency range above 1 GHz;
• This document has general test conditions revision and new specific test conditions addition (e.g., for robotic equipment);
• Additional requirements introduction for equipment making use of inductive power transfer technology;
• Based on statistical evaluation, remove from the normative text any compliance requirement;
• Clicks analysis revision and the application of the upper quartile method for various types of click analyzers.

Additional information of CISPR 14-1:2020:

 What is CISPR 14-2?

This part of CISPR 14 is an EMC immunity standard that specifies electromagnetic immunity requirements for household appliances, electric tools, and similar apparatus, whether powered by AC or DC (including a battery). Currently, the third edition of this standard (CISPR 14-2:2020, published in 2020) is available and valid.

The CISPR 14-2 EMC immunity standard specifies immunity requirements for continuous and transient electromagnetic disturbances, both conducted and radiated, test signal level, test procedure & test methods, and .other related details for the EMC immunity tests. It covers a frequency range of 0 Hz to 400 GHz. The CISPR 14-2 immunity standard ensures that the equipment can withstand electromagnetic disturbances (EMI) from nearby devices and operate properly. 

The scope of this document includes the equipment which incorporate radio transmit/receive functions and also includes microwave ovens for domestic use or catering.

The scope of the CISPR 14-2:2020 document excluded the following:

• The equipment/apparatus for which all EMC immunity requirements in the radio-frequency range are explicitly formulated in other CISPR standards or IEC standards;
• The equipment intended to be part of the building's fixed electrical installation (e.g. fuses, circuit breakers, cables, and switches);
• Medical electrical equipment
• Equipment only used in the industrial environment
• The equipment used exclusively in locations where special electromagnetic conditions exist (e.g. high energy pulses nearby power generation stations or high electromagnetic fields nearby broadcast transmitting stations);
• The equipment used exclusively on a vehicle, ship, boat or aircraft;
• This document excluded the effects of electromagnetic phenomena relating to the safety of the apparatus (see IEC 60335 series);

 The scope of the document also excluded AC single-phase equipment with a rated voltage higher than 250 V (between phase and neutral) and AC multi-phase equipment with a rated voltage higher than 480 V. The document does not consider the equipment's abnormal operation, such as simulated faults in the electric circuitry for testing purposes.

The third edition (CISPR 14-2:2020) supersedes the second edition published in 2015. The third edition features significant technical changes from the previous edition, which are listed below.

• For radiated measurements, this document extends the frequency range above 1 GHz;
• This document includes an advanced categorization of equipment
• This document features general test conditions revision and the addition of new specific test conditions (e.g., for robotic equipment);
• Provides clarification of requirements that are applicable to equipment incorporating radio functions;
• Has additional requirements for wired network ports;
• definitions revision and addition of new ones;
• This document deletes requirements referring to statistical evaluation.

Additional information of CISPR 14-2:2020: