Impulse Test System
Looking for an industrial impulse test system customized to your voltage ratings, laboratory layout, and testing standards? Weshine manufactures complete high-voltage impulse test platforms engineered for precision waveform generation and long-term operating stability.
-
Standardized Waveform Control: Precise 1.2/50 µs lightning and 250/2500 µs switching impulse wave shaping.
-
Custom Voltage Ratings: Scalable modular generator designs ranging from 100kV up to multi-megavolt class.
-
Digital Measurement Suite: Fully automated control consoles with integrated digital transient impulse analyzers.
-
Factory Direct Support: Direct manufacturer pricing, turn-key laboratory design assistance, and global technical service.
Contact Our Engineers to discuss your technical specification, request a laboratory proposal, or receive a fast quotation for your Electrical Testing Equipment Supplier needs.
High Voltage Impulse Test System Solutions
Weshine provides professional high voltage impulse test systems designed to evaluate the insulation performance and withstand capability of electrical equipment under transient overvoltage conditions. Our impulse testing equipment is widely used for testing transformers, switchgear, cables, insulators, and other high-voltage electrical products according to international testing requirements.
As a trusted Electrical Testing Equipment Supplier, Weshine offers reliable impulse voltage testing solutions with flexible configurations, accurate measurement systems, and customized designs for power utilities, manufacturers, and research laboratories.
Complete Impulse Testing Solutions
We provide integrated high-voltage impulse test platforms tailored for industrial factory acceptance testing, type testing, and research applications:
| Product Category | Testing Function | Primary Applications |
| Impulse Voltage Test System | Generates standardized lightning and switching impulse voltage waveforms for transient insulation breakdown testing. | Power transformers, MV/HV underground cables, GIS switchgear, surge arresters, electrical bushings. |
| Impulse Current Generator | Generates high-peak transient impulse currents (e.g., 8/20 µs, 10/350 µs, 4/10 µs waveforms) to evaluate surge discharge capabilities and thermal withstand stress. | Surge Protective Devices (SPDs), zinc oxide (ZnO) surge arresters, grounding systems, lightning protection components. |
| Combination Wave Generator | Delivers integrated 1.2/50 µs open-circuit voltage impulses and 8/20 µs short-circuit current impulses to evaluate surge immunity and insulation endurance. | Low-voltage electrical appliances, electronic meters, smart grid controllers, telecom & power line protection units. |
What Is an Impulse Test System?
An impulse test system is a specialized high-voltage testing installation used to generate transient high-voltage surge impulses to verify whether electrical insulation can withstand atmospheric lightning strikes or internal power grid switching surges.
During everyday grid operation, electrical assets are frequently exposed to fast-front voltage transients. To prevent catastrophic failure in the field, an impulse test system simulates these real-world surges in a controlled environment, generating standard lightning impulses (1.2/50 µs) and switching impulses (250/2500 µs) to evaluate dielectric margin and insulation strength.
How Does an Impulse Test System Work?
Our high voltage impulse test sets utilize multi-stage Marx generator principles combined with automated control and digital recording systems. The operational process follows four key steps:
-
Impulse Voltage Generation: Multiple high-voltage capacitor stages are charged in parallel and abruptly discharged in series via spark gaps to generate the required impulse surge.
-
Voltage Application: The generated transient voltage surge is applied directly to the equipment under test (EUT) via high-voltage damping resistors and dividers.
-
Waveform Measurement & Capture: A high-precision digital impulse measuring system records the voltage response, wave-front time, wave-tail time, and peak amplitude.
-
Insulation Performance Analysis: Engineers evaluate peak breakdown levels, insulation full-wave and chopped-wave responses to determine compliance with IEC or IEEE standards.
Applications of High Voltage Impulse Test Systems
Impulse voltage testing is essential for verifying insulation coordination across various high-voltage assets:
1. Power & Distribution Transformer Testing
Verifies the inter-turn and ground insulation strength of power transformer windings against lightning impulse withstand and switching impulse withstand limits during factory acceptance testing (FAT).
2. Switchgear & GIS Substation Testing
Evaluates the BIL (Basic Impulse Level) rating and surge resistance of gas-insulated switchgear (GIS), circuit breakers, and disconnectors under transient stress.
3. High Voltage Cable Testing
Assesses the dielectric integrity of XLPE and EPR underground cable joints, terminations, and insulating barriers under rapid impulse voltage rise.
4. Electrical Component Manufacturing & Research
Utilized by manufacturers of insulators, bushings, and surge arresters for type testing, product design validation, and research laboratory insulation studies.
Why Choose Weshine Impulse Test System?
Weshine impulse testing solutions combine high impulse efficiency with modern automated digital controls to ensure seamless field and laboratory performance:
-
Accurate Impulse Waveform Generation: Engineered with optimized circuit inductance and precise damping controls to generate stable, clean 1.2/50 µs lightning and 250/2500 µs switching waveforms compliant with IEC 60060-1.
-
Flexible & Modular Configurations: Scalable stage options allowing customized voltage output levels (from 100kV up to several megavolts) to meet diverse specimen capacitance demands.
-
Complete Measurement & Analysis: Integrated digital transient recorders provide real-time waveform display, automated parameter calculation, and instant test report generation.
-
Professional Technical Support: Complete engineering support from laboratory grounding layout and shielding design to onsite installation, commissioning, and calibration.
How to Select the Right Impulse Test System?
Use this guide to align your testing parameters with the optimal impulse system setup:
| Testing Requirement | Key Evaluation Parameter | Recommended Solution |
| Transformer Lightning Impulse Testing | Full-wave (1.2/50 µs) & Chopped-wave BIL tests | Impulse Voltage Test System |
| Switchgear Insulation Verification | High-voltage switching surge & insulation coordination | High Voltage Impulse Test System |
| Laboratory Research & Type Testing | Multi-purpose wave shaping & high energy testing | Customized Impulse Test Solution |
Frequently Asked Questions About Impulse Test Systems
Q1: What is an impulse test system used for?
An impulse test system is used to generate steep-front transient surge voltages (such as simulated lightning or switching surges) to test the insulation strength and surge withstand capability of high-voltage electrical equipment.
Q2: What electrical equipment requires impulse voltage testing?
Impulse voltage testing is required for power transformers, high-voltage cables, switchgear (GIS), circuit breakers, insulators, high-voltage bushings, and zinc oxide surge arresters.
Q3: What is the difference between impulse voltage testing and withstand voltage testing?
Power-frequency withstand voltage testing applies continuous AC or DC voltage over a duration (e.g., 1 minute) to check general insulation integrity. Impulse voltage testing applies microsecond-level transient voltage peaks to simulate sudden, extreme voltage spikes like lightning strikes.
Q4: Can Weshine impulse test systems be customized for specific laboratory sizes?
Yes. Weshine offers fully customized impulse generator layouts, including compact indoor mobile units and multi-megavolt hall installations tailored to your facility dimensions and test object ratings.