Electromagnetic compatibility testing in EMC lab EN 55011, CISPR 11
EN 55011:2016 Industrial, scientific and medical equipment– Radio-frequency disturbance characteristics Limits and methods of measurement
Modified: CISPR 11:2015 Industrial, scientific and medical equipment — Radio-frequency disturbance characteristics — Limits and methods of measurement
Replace: EN 55011:2009+A1 Industrial, scientific and medical equipment– Radio-frequency distur-bance characteristics Limits and methods of measurement
New in this edition: “It introduces and permits type testing on components of power electronic equipment, systems and installations. Its emission limits apply now to low voltage (LV) a.c. and d.c. power ports, irrespective of the direction of power transmission. Several limits were adapted to the practical test conditions found at test sites. They are also applicable now to power electronic ISM RF equipment used for wireless power transfer (WPT), for instant power supply and charging purposes. The limits in the range 1 GHz to 18 GHz apply now to CW-type disturbances and to fluctuating disturbances in a similar, uniform and technology-neutral way. For these measurements, two alternative methods of measurement are available, the traditional log-AV method and the new APD method. It has the status of a Product Family EMC standard in accordance with IEC Guide 107, Electromagnetic compatibility – Guide to the drafting of electromagnetic compatibility publications (2014).”
International standard EN 55011:2016 is applicable to:
- industrial, scientific and medical (ISM) equipment. The frequency range of ISM equipment shall not exceed 400GHz;
- household equipment and similar equipment designed to generate and/or use locally radio-frequency energy;
International standard EN 55011:2016 separates all equipment in two groups– Group 1 and Group 2, each group is subdivided in two classes– class 1 and class 2.
Group 1- covers all devices that are not covered by group 2.
Group 2- covers devices that intentionally generates RF energy in frequency range 9kHz-400GHz, that is used in form electromagnetic radiation, inductive coupling, capacitive coupling for material analysis or inspection.
Class A- covers devices for usage in all establishments other than domestic and that are not directly connected to a low voltage power supply network, which supplies domestic environment.
Class B- covers devices for usage in domestic establishments that are directly connected to a low voltage power supply network, which supplies domestic environment.
If class A requirements are applied, then following or similar warning shall be included in the instructions for use:
This equipment is not intended for use in residential environments and may not
provide adequate protection to radio reception in such environments.
Group 1– Medical, scientific, laboratory, industrial electro heating, industrial process measurement and control, semiconductor manufacturing equipment, machine tools, Industrial induction heating equipment that do not exceed 9kHz, semiconductor converters.
Group 2– Dielectric heating equipment, microwave ovens, medical equipment, electric welding equipment, demonstration models for education and training, induction heating equipment that exceeds 9 kHz, microwave-powered UV irradiating apparatus, microwave lighting apparatus, inductive power transfer/charging equipment.
Conducted emissions AC port 150kHz-30MHz
Conducted emissions DC port 150kHz-30MHz (grid connected power convertors (GCPCs) intended for assembly into photovoltaic power generating systems)
Radiated emissions 150kHz-1GHz
Conducted emissions AC port
Conducted emissions DC port