IEC EN 61000-4-25 Electromagnetic Compatibility (EMC) - Part 4-25: Test and Measurement Techniques - HEMP Immunity Test Methods for Equipment and Systems

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 61000-4-25 test. This section of IEC EN 61000 describes immunity test levels and related test methods for electrical and electronic equipment and systems exposed to high altitude electromagnetic pulse (HEMP) environments. Immune test levels define ranges and establish test procedures.

Specifications for test equipment and instrumentation test setup, test procedures, pass/fail criteria, and test documentation requirements are also defined by this standard. These tests aim to demonstrate the immunity of electrical and electronic equipment when exposed to HEMP radiated and conducted electromagnetic disturbances. For propagated degradation immunity tests, this standard defines specifications for both small test facilities and large HEMP simulators.

This part of IEC EN 61000 defines specifications for laboratory immunoassays. In situ tests performed on equipment at final setup to verify immunity are also specified. These validation tests use the same specifications as laboratory tests, except for climatic environment specifications.

The purpose of this part of IEC EN 61000 is to provide a common and repeatable basis for evaluating the performance of electrical and electronic equipment when HEMP is exposed to radiated environments and associated transmitted transients on power, antenna and input/output (I/O).

The nuclear high-altitude electromagnetic pulse test consists of two main parts: the radiated immunity test and the conducted immunity test. Radiation immunity testing is done to demonstrate that the equipment under test is capable of continuing to operate when exposed to radiated HEMP fields. Similarly, the immunoassay conducted is performed to demonstrate that the equipment under test will not be adversely affected by exposure to conducted HEMP transitions. These transients are current and voltage pulses on the conductors (wires, cables) connected to the equipment. In general, conducted HEMP transients induced on power and telecom lines are generally the most serious threats to equipment. The immunity tests described in this standard involve dangerous voltages. High voltage precautions will be necessary to protect the health and safety of test personnel.

EUROLAB assists manufacturers with IEC EN 61000-4-25 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.