GET 202-2024 State primary special standard of impulse current unit in the range from 1.0 to 1.0⋅10⁵ A

The provision of metrological support for testing immunity to pulsed currents of natural and artificial origin constitutes an important task in the development and production of aviation, telecommunications, and rocket and space equipment. GET 202-2012 State primary special standard for the unit of impulse lightning discharge current ensured uniformity in measuring pulsed current parameters within the amplitude range of 1–100 kA and time range from hundreds of nanoseconds to units of milliseconds. In order to provide metrological support for instruments measuring the pulsed currents of electrostatic discharges and switching currents (rise time of transient response of at least 1 ns; measurement range of 1–200 A), GET 202-2012 was upgraded in 2020–2023. As a result of this upgrade, GET 202-2024 State primary special standard of impulse pulsed current in the range from 1.0 to 1.0⋅10⁵ A was approved. The lower limit of its pulsed current range is 1 A, with the pulse rise time not exceeding 1 ns. Thus, uniformity is ensured in measuring the parameters of pulsed electrostatic discharge currents and switching power currents. To achieve the specified characteristics, the GET 202-2024 comprises devices for reproducing current pulse that are based on semiconductor switches and reference current shunts with a short rise time of transient response. The composition and block diagram of GET 202-2024 are presented, along with its technical and metrological characteristics. GET 202-2024 ensures uniformity in measuring the parameters of pulsed currents of electrostatic discharges and partial lightning discharges, as well as pulsed currents induced by switching processes, in the solution of electromagnetic compatibility problems, in the creation of new types of materials and coatings, in geophysical and meteorological research and observations, and in healthcare.