Calitron Calibration Laboratory Provides EFT Testing Services for Electrical and Electronic Equipment

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Calitron Calibration Laboratory Pvt. Ltd., an ISO/IEC 17025:2017 accredited testing and calibration laboratory providing mechanical, thermal, electro-technical, flow, and EMC testing services, provides Electrical Fast Transients (EFT) testing services as part of its electromagnetic compatibility (EMC) laboratory testing operations from Pune, Maharashtra, India.

The company conducts ETF burst immunity testing according to IEC61000-4-4:2012 and BS EN61000-4-4:2012 standards for electrical and electronic apparatus used in residential, commercial, and light industrial environments. The laboratory also performs EFT immunity testing for industrial environments under BS EN61000-6-1:2007, IEC61000-6-1:2005, BS EN61000-6-2:2005, and IEC61000-6-2:2005 standards, along with testing for power quality analysers under IEC61326-1:2012.

Calitron Calibration Laboratory also performs EFT testing for household appliances, electric tools, IT and radio equipment under CISPR24:2010 and BS EN55014-2:2015 standards, as well as medical equipment testing under IEC60601-1-2:2007 for basic safety and essential performance requirements.

The company describes EFT testing as a conducted immunity test designed to subject equipment under test (EUT) to a series of fast rise time and duration pulses to verify compliance and product reliability requirements. Within EMC testing, the company's EFT testing is used to simulate fast pulse bursts to evaluate their impact on the operation of the EUT.

Calitron Calibration Laboratory's EFT immunity testing is intended to evaluate whether products can withstand fast transients caused by AC/DC connection switching, equipment power-down conditions, and circuit breaker operations.

The company identifies several common causes of EFT events, including inductive loads such as relays, switch contactors, and heavy-duty motors when de-energized, which generate narrow high-frequency transient bursts on power distribution systems.

The laboratory also states that transient events can occur when utility providers switch power factor correction equipment, during AC power cord insertion, equipment power cycling, and circuit breaker opening or closing operations.

According to the company, lightning strikes can also produce EFT events, while subway trains and electric buses can generate EFT surges on power grids and AC mains through continuous arcing conditions. Calitron Calibration Laboratory further states that switching power supply layouts can be affected by large loop paths in SMPS high switching current paths, which should be designed to remain short and capable of handling high current loads.

The company notes that EFT event energy levels can reach several hundred milli-joules and may corrupt transmitted data across household and industrial environments, requiring EFT suppression in system design.

Click here to learn more about the EFT testing services.