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Electrical fast transient burst immunity

1. Introduction

　　The pulse group immunity test is to simulate the interference generated by many mechanical switches in the power grid when switching inductive loads. The characteristics of this type of interference are: narrow pulses appearing in groups, high pulse repetition frequency (kHz~MHz level), steep rising edge (ns level), short duration of a single pulse (10-100ns level), and the amplitude reaches kV level. Groups of narrow pulses can charge the junction capacitance of semiconductor devices, and when the energy accumulates to a certain level, it can cause circuit or equipment errors. During the test, the pulse is superimposed on the power line and communication line to form interference to the equipment.

　　The test part of the equipment under test (EUT) mainly includes the power supply port of the equipment, protective earth (PE), signal and control ports.

2. System connection diagram

3. Typical configuration

Single-phase 16A burst immunity test system [according to IEC 61000-4-4/GB T 17626.4]
serial number	product	illustrate	brand
1	Compact NX5	Ultra-small conducted anti-interference signal simulator, including electrical fast transient burst module EFT/N5, surge module VCS/N5 and communication wave surge module Tsurge5, power failure module PFS/N5 and single-phase 300V/ 16A coupling/decoupling network	EMTEST/ Switzerland
2	CCI	capacitive coupling clamp	EMTEST/ Switzerland
3	EMS-TAB	EMS test environment, including solid wood test table, desktop ground plane, insulation support, etc.	Wisdom/China

Three-phase 32A burst immunity test system [according to IEC 61000-4-4/GB T 17626.4]
serial number	product	illustrate	brand
1	Compact NX5	Ultra-small conducted anti-interference signal simulator, including electrical fast transient burst module EFT/N5, surge module VCS/N5 and communication wave surge module Tsurge5, power failure module PFS/N5 and single-phase 300V/ 16A coupling/decoupling network	EMTEST/ Switzerland
2	coupling NX5 bs-3-480-32	3-phase coupling and decoupling network for Compact NX5 series maximum voltage 3x480V AC 32A	EMTEST/ Switzerland
3	CCI	capacitive coupling clamp	EMTEST/ Switzerland
4	EMS-TAB	EMS test environment, including solid wood test table, desktop ground plane, insulation support, etc.	Wisdom/China

Three-phase 125A burst immunity test system [according to IEC 61000-4-4/GB T 17626.4]
serial number	product	illustrate	brand
1	Compact NX5	Ultra-small conducted anti-interference signal simulator, including electrical fast transient burst module EFT/N5, surge module VCS/N5 and communication wave surge module Tsurge5, power failure module PFS/N5 and single-phase 300V/ 16A coupling/decoupling network	EMTEST/ Switzerland
2	coupling NX5 bs-3-480-125	3 Phase Coupling Decoupling Network for Compact NX5 Series Maximum Voltage 3x480V AC 125A with 19'/25HU Rack	EMTEST/ Switzerland
3	CCI	capacitive coupling clamp	EMTEST/ Switzerland
4	EMS-TAB	EMS test environment, including solid wood test table, desktop ground plane, insulation support, etc.	Wisdom/China

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