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High voltage transient conducted immunity (ISO 7637-4)

Introduction to testing

　　With the promotion and popularization of new energy vehicles, the safety of high-voltage components inside the vehicle has become one of the main guarantees for the safety of the vehicle itself. The ISO 7637-4 standard is applicable to the bench test of the conduction transient of the shielded high-voltage power cord with the electrical system voltage between 60VDC and 1500VDC. Suitable for all types of electrically independent drive road vehicles (battery electric vehicle (BEV), hybrid electric vehicle (HEV) or plug-in hybrid electric vehicle (PHEV)). There are mainly two test waveforms as follows:

Pulse A: Ringing generated by switching operation of high-voltage semiconductors

　　 Pulse B: A sine wave generated by the rotation of the electric drive motor and the harmonics of the grid

System Connection Diagram - Pulse A

System Connection Diagram - Pulse B

typical configuration

Comply with ISO 7637-4 Pulse A waveform test system
serial number	product	illustrate
1	NSG 4070C-80	All-in-one susceptibility test system NSG 4070, 4 kHz~1 GHz RF generator, and power meter, power amplifier, with 80 W, 150 kHz~230 MHz, including remote control software (USB disk), USO 4013, SN: (USB to Serial/Optical Adapter with 20m Optical Cable), RS232 Cable, LAN Cable, Keyboard (English), Power Cable GB, CH, USA / JP, EU
2	icd.control	icd.control software license for one generator, CWS, NSG 4060, NSG 4070B-xx, NSG 4070C-xx
3	HV-AN 150	5 μH artificial mains network, unshielded butterfly connector, used in automotive electronics, Airborne and MIL
4	SET 4001	Susceptibility test kit according to standard ISO 7637-4, frequency range 1~10 MHz, maximum power 80W, including 2x HV-AN 150, 2x HV-AN 150-TC, 2x load 200 W, 2x T-connector, RF Cables with Type N connectors, BAL 4070 and BAL 4070-TC
5	ATN 6150	Attenuator 6 dB, 150 W, 1 GHz, N(f)-N(f)
6	ATN 20050	Attenuator 20 dB, 50 W, 1 GHz, N(f)-N(f) Attenuator 20 dB, 50 W, 1 GHz, N(f)-N(f)
Comply with ISO 7637-4 Pulse B waveform test system
serial number	product	illustrate
1	NetWave 67.5-400	Three-phase multifunction AC/DC power supply, 67 kVA, 3x690 VAC (pp), +/- 560 VDC per phase, with +/- 1120 VDC (HV-DC mode), 1000 VDC isolation voltage, including arbitrary waveforms Generators, including Opt-3 Recovery 67, Opt-3 DC-EVR and Opt-3 Parallel 67. Including net.control and software license net.industry (IEC 61000-4-13, -14, -17, -28 , etc.) ,net.automotive (LV 123, VW 80300, etc.). Optional software license for MIL&DO standard testing, input voltage 400 V.
2	C-BOX	Capacitor box for ripple testing, including one 10uF and one 100 uF capacitor, selectable by jumper, maximum 700VAC/1000VDC isolation voltage, 6mm lab connector;
3	AMP 200N2	Audio power amplifier module and DDS signal source for Ford EMC-CS-2009 test, RI140/150, CI 210/250 and superposition DC-Rippel-Tests. 210/250.
4	CN 200N300	Coupling unit, audio transformer for coupling sine wave (10Hz - 500kHz) to DC line. Rated current: 300A Rated voltage: 1200V DC
5	AUTO TAB	Automotive electronics ISO 7637 test environment, complies with standard ISO 7637-2, ISO 7637-3 including test table (2.4mx1.2mx0.9m), ground plane (2.4mx1.2m), ground strap, insulating mat
6	BY GPIB	GPIB card and GPIB cable (including computer)

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