BOLAB Systems GmnH - 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
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
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Item |
Description |
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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 accessories for a system for ISO7637-4 |
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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 accessories for a system for ISO7637-4 |
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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 |
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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 |
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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 |
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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 |
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BLS 100-SSM-TS-12 |
WaveMaster-Software service, support, and maintenance |
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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





