High Energy Lightning Impulse Generator for EHV and UHV Testing Customized High Voltage Impulse Test System for Large Power Transformers, GIS and Insulation Laboratories

The High Energy Lightning Impulse Generator is designed for demanding high-voltage laboratory applications where the required impulse voltage, stored energy, and test-object characteristics call for a specially engineered system.

It can be configured for selected extra-high-voltage insulation testing applications involving large power transformers, bushings, insulators, GIS components, and other compatible high-voltage electrical equipment.

The generator typically uses a multistage impulse circuit, charging system, and wave-shaping components to generate the required impulse voltage. A complete installation may include a measuring divider, transient recorder, control cabinet, safety interlocks, and specialized test connections.

The actual voltage and energy ratings must be matched to the intended test objects and test procedures. A high voltage rating alone does not guarantee suitability for every application.

• High-voltage and high-energy configurations.

• Multistage impulse generation.

• Full-wave lightning impulse testing.

• Optional chopped-wave and switching impulse functions.

• Digital waveform measurement and recording.

• Customized charging and wave-shaping components.

• Engineering support for large test laboratories.

• Configurable control and safety arrangements.

High-Voltage Full-Wave Testing: Generates the required lightning impulse waveform for insulation withstand evaluation.

Chopped-Wave Testing: Available with a suitable chopping arrangement.

Switching Impulse Testing: Can be included when the required circuit and measurement configuration are specified.

Waveform Measurement: Supports waveform acquisition and analysis using a compatible measuring divider and transient recorder.

Large Test-Object Integration: Considers test-object capacitance, connection geometry, clearances, and the required waveform under load.

• Extra-high-voltage transformer testing

• Selected GIS and high-voltage switchgear testing

• High-voltage bushings and insulators

• National and industrial testing laboratories

• High-voltage research institutions

• Large electrical equipment manufacturing facilities

Need to match voltage and energy ratings: The selected system must satisfy both the required impulse voltage and the relevant energy and load conditions.

Concern about loaded waveform performance: Request technical evidence or test records relevant to representative loads.

Complex laboratory installation: Discuss electrical clearances, grounding, equipment arrangement, access control, and the measurement room.

Need a coordinated measuring system: Verify the voltage divider's rating and performance, recorder bandwidth, calibration arrangements, and software scope.

Q1: Is a high-energy impulse generator suitable for every EHV transformer?

No. Suitability depends on the required impulse level, transformer capacitance, waveform, test procedure, and system configuration.

Q2: Can the system generate both lightning and switching impulses?

This is possible when the selected system includes the required circuits, wave-shaping components, and measurement functions.

Q3: Can you provide a complete high-voltage laboratory solution?

The scope can be discussed to include generation, measurement, control, safety interfaces, accessories, and agreed engineering support.

Q4: What information should we provide?

Share the required peak voltage, stored energy or test-object capacitance if known, equipment under test, required waveforms, applicable standards, and laboratory layout.

Q5: Can the system be customized for a specific laboratory?

Yes. The proposed configuration can be reviewed against the actual testing requirements and laboratory infrastructure.

Send us your project specifications for a technical review. We can evaluate the required ratings, measuring system, configuration, and laboratory requirements before preparing a proposal.