Product Overview
The High Voltage Lightning Impulse Generator for Power Transformer Testing is designed to evaluate transformer insulation performance under specified impulse voltage conditions. It is suitable for transformer manufacturers, power equipment testing laboratories, utility companies, and engineering organizations involved in transformer design, production, quality assurance, and acceptance testing.
Power transformers may experience lightning-related transient overvoltages during service. Impulse testing helps manufacturers evaluate the insulation system's ability to withstand specified electrical stresses and supports verification of insulation design and manufacturing quality.
The system can be configured according to the transformer's rated voltage, insulation level, winding arrangement, capacitance, and applicable test specification.
A complete transformer impulse test solution may include a multistage impulse generator, charging system, wave-shaping network, high-voltage measuring divider, digital transient recorder, control console, and dedicated test connections.
Main Features
- Configurable high-voltage impulse output.
- Multistage generator architecture for suitable voltage and energy requirements.
- Adjustable wavefront and wavetail parameters within the designed operating range.
- Full-wave impulse testing and optional chopped-wave testing.
- Digital waveform recording and analysis.
- Customized measuring and control arrangements.
- Safety interlocks and residual-charge management.
- Engineering support for transformer test laboratory projects.
Testing Functions
Transformer Lightning Impulse Withstand Testing
Applies specified impulse voltage waveforms to evaluate the insulation performance of transformer windings and associated insulation structures.
Chopped-Wave Testing
When required by the applicable test procedure, a suitable chopping arrangement can be incorporated to produce the required waveform.
Impulse Waveform Recording
The measuring system records the applied voltage waveform for subsequent assessment of peak voltage, wavefront time, time to half-value, and other relevant parameters.
Test Data Documentation
Depending on the selected measurement and software configuration, waveform records and test data can be stored and exported to support quality documentation and technical review.
Typical Applications
- Power transformer manufacturing plants
- Distribution transformer factories
- Large power transformer manufacturers
- Transformer type-test laboratories
- Third-party electrical testing laboratories
- Transformer research and development centers
- Utility equipment acceptance testing facilities
Customer Pain Points We Address
Challenge 1: Uncertainty about the required voltage rating
The required generator rating depends on the transformer's insulation level and test specification. Our engineers can review the relevant parameters before recommending a configuration.
Challenge 2: Difficulty achieving the required waveform
Waveform performance depends on the generator, wave-shaping network, test object, connections, and measurement setup. The system should be engineered for the actual transformer load.
Challenge 3: Incomplete equipment configuration
A generator alone may not provide a complete test solution. We can help define the required measuring divider, waveform recorder, control system, accessories, and safety equipment.
Challenge 4: Limited laboratory space
Equipment arrangement, electrical clearances, grounding, and access requirements should be considered during laboratory planning. A proposed layout can be developed based on available site information.
Frequently Asked Questions
Q1: Can this system test distribution and power transformers?
Yes, provided the selected voltage, energy, waveform, and measurement configuration meet the requirements of the specific transformer and test procedure.
Q2: Does transformer impulse testing require a chopped-wave device?
Not for every test. The required waveforms and chopping arrangements depend on the applicable standard, transformer specification, and agreed test program.
Q3: Can you supply a complete transformer impulse test system?
A complete solution can be configured with the generator, charging unit, wave-shaping components, measuring divider, digital recorder, control system, and required accessories.
Q4: What information is needed for a quotation?
Please provide the transformer voltage class, required impulse voltage, transformer type, applicable standard, waveform requirements, and whether you need a complete laboratory solution or a generator upgrade.
Q5: Can the system support factory acceptance and quality-control testing?
The system can be configured for the specified factory test program, with suitable measurement and data-recording equipment.
Get Your Customized Transformer Testing Solution
Contact us with your transformer specifications and testing requirements. We can review the required generator capacity, system configuration, waveform measurement, and laboratory installation conditions before preparing a quotation.
