BOLAB ISO 7637-4 HV Test System

Full Compliance – Meets all ISO 7637-4 test requirements
Pulse A Testing – Simulates MOSFET/IGBT switching noise (100 kHz – 10 MHz)
Pulse B Testing – Low-frequency sinusoidal disturbances (3 kHz – 300 kHz)
High-Power RF Amplifier – 75W output (100 kHz – 400 MHz) for clean signal generation
Burst Generator – Supports configurable burst parameters (1–1000 cycles)
Power Meter & Directional Coupler – Accurate transient measurement (100 kHz – 10 MHz)
Integrated Transformer – Isolates high-voltage circuits & prevents transient damage
Scalable & Modular – Configurable for custom DUT testing needs
Turnkey Solution – Includes generator, amplifier, coupler, and switching solutions

PARTNER:

BOLAB SYSTEMS GMBH

MARKETS:

TEST STANDARDS:

ISO 7637-4 ,

Overview of system

SPECIFICATIONS

BOLAB Systems – Turnkey Test Solution for ISO 7637-4 Compliance

Comprehensive Testing for ISO 7637-4 Automotive Electrical Transient Requirements

BOLAB Systems provides a full turnkey test system designed to meet ISO 7637-4 standards for electrical transient conduction along shielded high-voltage supply lines. This system ensures compliance with all test conditions specified in the standard, including voltage transient emission, sinusoidal disturbances (Pulse A & Pulse B), and low-frequency immunity testing.

Our solution delivers precise, repeatable, and standards-compliant testing, utilizing industry-leading RF generators, broadband amplifiers, power meters, and switching solutions.

Key Features & Capabilities

ISO 7637-4 Pulse A – Pulsed Sinusoidal Disturbances

Simulates switching noise from MOSFETs and IGBTs in high-voltage switching systems
Sinusoidal bursts (10 cycles) with burst times: 1, 2, 5, 10 µs
Test voltage defined in VPP (20 VPP = 7.07 VRMS, 1 W @ 50 Ω = 30 dBm)
BLS 300-7637-4-A: Complete solution with burst generator, RF amplifier, balun, and directional coupler
Frequency range: 100 kHz – 10 MHz
75W RF amplifier (100 kHz – 400 MHz) ensuring sufficient power headroom for clean sinusoidal wave generation

ISO 7637-4 Pulse B – Low-Frequency Sinusoidal Disturbances

Simulates harmonics from grid power & electric propulsion motors
Continuous sinusoidal wave (no pulse)
Amplifier Specifications:
- Frequency range: 3 kHz – 300 kHz
- Output voltage: 30 VRMS (3–250 kHz) / 25 VRMS (250–300 kHz)
- Output current: 16 ARMS
Integrated transformer isolates amplifier from high-voltage circuits and prevents transient damage
Automatic overvoltage protection safeguards amplifier output

Fully Integrated Test Equipment

RF Generator (100 kHz – 10 MHz, -60 dBm to 0 dBm) for CW & burst signals
Configurable burst parameters (1–1000 cycles, 1–255 packets, period time 1 µs–3.64 ms)
Power Meter (100 kHz – 10 MHz) with peak detection
Broadband RF Amplifier (10 kHz – 400 MHz) with high output power
User Interface:
- Galvanically isolated digital I/O for monitoring and control
- EUT interlock functionality & PT1000 temperature monitoring

Item	Discription	Picture
BLS 300-7637-4-A	Interference Generator for tests according to ISO 7637-4 Pulse A Coupling of the burst signals directly asymmetrically to one phase or symmetrically via a balun to both phases simultaneously Frequency range: 100 kHz - 10 MHz Signal form CW and burst with a settable number of • oscillations 1...1000 • packets 1...255 Amplitude: 1...100 Vpp Power amplifier: 75 W 2 RF measurement inputs with peak detector RF_in and P_forward (SMA internal) +20...-60 dBm Internal and external trigger signal (back side BNC isolated) for burst control Interfaces: USB, LAN (GPIB optional) Dimensions: 19”, 3 HE Options: BLS 100AC-OVP - Over Voltage Protection integrated in Interference Generator for Pulse A BLS ZS-7637-4 - Various accessoires for a system for ISO7637-4
BLS 300-7637-4-B	Interference Generator for tests according to ISO 7637-4 Pulse B Frequency range: 3 kHz to 300 kHz Output voltage: • 3 to 250 kHz 30 V (rms) • 250 to 300 kHz 20 V (rms) Output current: 16 A (rms) Coupling transformer: 1:1, 100 A max. The signal generation is not part of the offer and must be realized by a BOLAB AnyWave control unit or an external signal generator! (AnyWave Included in Offer) BLS ZS-7637-4 Various accessoires for a system for ISO7637-4
BLS CT-7637-4	Coupling transformer: 1:1, 100 A max. Offered in combination with BLS 300-7637-4-B or separately if using an existing BLS 100TS Series amplifiers system
BLS AN-7637-4 x2	High voltage artificial network (HV-AN) According to ISO 7637-4 • 5 μH \|\| 50 Ω • 70 A • 1,000 V • 0.1 μF BLS AN-SB-7637-4 Shielded box to build in up to 2 x artificial network AN-7637-4 BLS AN-CG-7637-4 Flange plates with cable glands
BLS 400-6361	AnyWave + WaveMaster External control unit solution to run waveforms with amplifiers and standard power supplies via its analog interfaces. Included WaveMaster software for waveform generation and data acquisition. • USB interface • Maximum sampling rate of analog outputs: 2.8 MS/s • 2 analog outputs • Unlimited memory data points • WaveMaster software for graphical and tabular input of waveforms and for controlling the amplifier / power supply • Graphic display of generated voltage curve in sync to measured signals of current and voltage of the monitor outputs • Integrated test pulses out of LV124 / VW80000, DIN 40839, ISO 16750, ISO 7637 as well as other manufacturer standards (Daimler, BMW, VW, etc.) • Taking over data out of oscilloscopes and run real signals • DLL´s for embedding in LabView, C#, C++, ANSI C, Python, Vector CAPL, etc. Dimension: 19“ Width, 2 U
BLS 27/54-1500 1C	Single Channel High Dynamic Power Supply Bidirectional DC-Power Supply Inclusive WaveMaster Control DC Output: Voltage Umax: 1.500 V Current Continuous Imax: ±54 A Device Power Pmax: 27 kW Number of output channels: 1 Voltage accuracy dynamics (values for one power supply module): Voltage rise time 10% - 90%: Voltage fall time 90% - 10%: Mains connection: AC input voltage: 380 … 480 V, 50 / 60 Hz Ambient conditions: Cooling: temperature controlled cooling fans Mechanical information: Housing: 19”, 7 HE BLS G5.ISR.2 Integrated Safety Relay 2-channel (2x category 1, PL c according to DIN EN ISO 13849-2:2012) read-back circuit with forcibly guided contacts for 27/36 kW BLS G5.HMI.2 Human Machine Interface 5'' touchscreen, built in DC power supply operation for single device and multi-unit system for 36kW
BLS 100-SSM-TS-12	WaveMaster-Software service, support, and maintenance

Why Choose BOLAB Systems for ISO 7637-4 Compliance?

Full ISO 7637-4 compliance – covering all required test conditions
Turnkey system – includes generator, amplifier, coupler, transformer, and switching solutions
High-power RF amplifier – 75W output ensures low distortion and clean sine wave generation
Scalable & modular – configurable to meet your specific DUT testing needs
Reliable performance – built-in overvoltage protection prevents amplifier damage