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IEC 61000 Family of Immunity Standards

Manufacturers must ensure their electrical and electronic devices comply with appropriate EMC directives and regulations before being placed in the market.

The IEC61000 family of immunity standards defines several electromagnetic phenomena and test methods to establish acceptable emission and immunity limits for the device under examination. The immunity tests measure a device's ability to counter different electromagnetic issues.

Surge Immunity Testing

IEC 61000-4-5 Standard

These tests relate to the immunity requirements, test methods, and range of test levels for equipment concerning unidirectional surges caused by overvoltage from switching and lightning transients. These provisions apply to electrical and electronic equipment. Surge is a phenomenon factor like indirect lightning and blackout incidents producing repetitive electrical fast transients and temporary power surges that may cause arcing, motor failures, and other troubles. Simulation tests validate the appropriate protection circuitry to ensure that there will be no concern when using the product.

Power frequency magnetic field immunity test

IEC 61000-4-8 Standard.

This test relates the immunity requirements of the equipment to the effects of magnetic field disturbances at power frequencies 50Hz and 60Hz to ensure the device performs satisfactorily under this phenomenon.

Voltage dips, short interruptions, and voltage variations immunity tests

IEC 61000-4-11 Standard

These tests define the immunity methods and range of preferred test levels for electrical and electronic equipment connected to low-voltage power supply networks for AC voltage dips, power short interruptions, and voltage variations. This standard applies to electrical and electronic equipment having a rated input current not exceeding 16 A per phase for connection to 50 Hz or 60 Hz A.C.. networks

Radiated, radio-frequency, electromagnetic field immunity test

IEC 61000-4-3 Standard

This test applies to the immunity of electrical and electronic equipment to radiated electromagnetic energy. The object is to establish a reference for evaluating the immunity of the equipment when subjected to radiated, radio-frequency electromagnetic fields.

Electromagnetic noise generates from various sources, such as cellular, microwaves, and a Wi-Fi router.

Electrical fast transient/burst immunity test

IEC 61000-4-4 Standard

This test relates to the immunity of electrical and electronic equipment to repetitive electrical fast transients. It gives immunity requirements and test procedures to electric fast transients/bursts.

The rapid electrical transient is the disturbance caused by the inductive load switching on the electrical network. A burst source simulates the effects of transients produced by motors, switches, relays, and fluorescent lamp ballasts on the test unit.

Immunity to conducted disturbance induced by radio-frequency fields test

IEC 61000-4-6 Standard

This test relates to the conducted immunity requirements of electrical and electronic equipment to electromagnetic disturbances from intended radio-frequency (RF) transmitters in the frequency range 150kHz up to 80MHz. Immunity testing simulates potential disturbances from other devices powered by the same power grid or inductively coupled to its I/O lines.

Electrostatic discharge immunity test (ESD)

IEC 61000-4-6 Standard

ESD tests relate to the immunity requirements and test methods for electrical and electronic equipment subjected to static electricity accumulated static electricity discharge in a person and from personnel to adjacent objects, causing a spark or dielectric breakdown.

Short bursts of energy, typically at 4kV and 8kV, can damage sensitive pieces of the circuitry, like integrated circuits and communication ports, and harm LCDs.

Harmonic current emissions test

IEC 61000-3-2 Standard

This test deals with the harmonic current limitations injected into the public supply system. It specifies limits of harmonic components of the input current produced by equipment under specified conditions. It applies to electrical and electronic equipment with a rated input current up to and including 16 A per phase and connected to public low‑voltage distribution systems.

Voltage changes, voltage fluctuations, and flicker test

IEC 61000-3-3 Standard

The test concerns voltage fluctuations and flickers on the public supply system. The test specifies limits of voltage changes produced by the equipment under specified conditions. It applies to electrical and electronic equipment having an input current equal to or less than 16 A per phase.

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