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High-current test techniques. Definitions and requirements for test currents and measuring systems
IEC 62475:2026 is applicable to high-current testing and measurements on both high-voltage and low-voltage equipment. It deals with steady-state and short-time direct current (as e.g. encountered in high-power DC testing), steady-state and short-time alternating current (as e.g. encountered in high-power AC testing), and impulse-current.
In general, currents above 100 A are considered in this International Standard, although currents less than this can occur in tests.
This standard:
This standard also covers fault detection during, for example, lightning impulse testing.
This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
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