Lightning Impulse Voltage Test Equipment
Huazheng Lightning Impulse Voltage Test Equipment is specialized high-voltage testing equipment used to simulate lightning strikes and electrical surges on electrical equipment to evaluate its dielectric strength and ability to withstand transient voltage conditions. Lightning impulses are high-energy, short-duration voltage pulses that can damage electrical insulation and components, so testing electrical equipment against these conditions is essential to ensure its resilience and safety in real-world applications.
Huazheng Lightning Impulse Voltage Test Equipment
Product introduction
Lightning Impulse Voltage Test Equipment is a device used to simulate transient high voltage generated by natural lightning and perform withstand tests on electrical equipment, insulating materials, or systems.
Environmental Conditions for Use
Altitude: ≤ 1000 m
Ambient Temperature: -5°C ~ +40°C
Relative Humidity: < 90%
Maximum Daily Temperature Difference: ≤ 25°C
Environment: Indoor use only
Dust: Non-conductive dust
Hazards: No fire or explosion hazards
Corrosive Gases: No gases that corrode metals or insulate
Supply Voltage Waveform: Actual sine wave, waveform distortion rate < 5%
Technical Specifications
| Item | Specification |
| Nominal Voltage | ±1800 kV |
| Rated Voltage | ±200 kV |
| Nominal Energy | 180 kJ |
| Total impulse capacitance | 0.111 mF |
| (18 capacitors of 2.0 mF / 100 kV each for single pulse) | |
| Series Level | 9 |
| Standard Lightning Impulse Voltage | Full-wave: ±1.2/50 μs |
| Voltage utilization factor: > 85% (no-load 300 pF > 90%) | |
| Chopped Wave | Chopping time: (2–6) μs ±10% |
| Zero-crossing coefficient: ≤ 0.3% | |
| Standard Switching Impulse Voltage | 250 μs ±20% / 2500 μs ±60% |
| Waveform compliance | Meet GB 311 and GB 16927 |
| Minimum Output Voltage | > 10% of nominal voltage |
| Service Duration | Above 70% rated voltage: charge/discharge every 120 s, continuous operation |
| Below 70% rated voltage: charge/discharge every 60 s, continuous operation |
Technical Description of Main Components
DC Charging Part Technical Specifications:
Constant Current Charging Device:
The system employs a constant current charging device.
Oil-Immersed Charging Transformer:
Transformer rated capacity: 30 kVA
Secondary voltage: 85 kV
High-Voltage Rectifier Silicon Stack:
Model: 2DL-300 kV / 500 mA
Reverse withstand voltage: ≥ 300 kV
Average current: ≥ 0.5 A
Installation: The rectifier silicon stack is positioned next to the charging transformer.
Polarity Reversal: The charging voltage polarity can be automatically reversed via a transmission mechanism.
Polarity switch buttons are located on the control console.
Protection Resistance:
Made of enameled resistance wire, tightly wound around an insulation tube.
Charging Mode:
Bilateral symmetrical constant current charging mode.
Automatic Control Performance:
The constant current charging device operates within 10%–100% of the rated charging voltage range.
Actual charging voltage deviation from the set voltage: ±1%
Charging voltage instability: ≤ ±1%
Adjustable accuracy of charging voltage: 1%
Voltage Dividers:
Two DC resistance voltage dividers are used.
Specifications: 100 kV, 300 MΩ oil-immersed metal film resistors.
The low-voltage arm resistor is installed on the bottom flange of the voltage divider.
Voltage signal from the low-voltage arm is transmitted to the console via a shielded cable.
Automatic Grounding Switch:
Uses an electromagnet to separate the grounding mechanism.
Upon test completion, the main capacitor is automatically grounded through protective resistance.
Mounting of Components:
The constant current charging inductance, capacitance, charging transformer, high-voltage rectifier silicon stack, protection resistance, automatic grounding switch, and insulation pillars are all mounted on a mobile chassis for easy mobility.
FAQ
Q: What is the base price of the equipment?
A: The price of the equipment depends on the required maximum voltage level, impulse energy, and the degree of automation. Please contact our sales team for the latest detailed quotation.
Q: Are there any additional discounts or offers for bulk purchases?
A: Yes, we offer tiered discounts and priority supply rights for bulk orders or long-term cooperation agreements.
Q: Does the quote include duties and shipping fees?
A: Our initial quotation is usually based on FOB (Free On Board) China port price and does not include duties or inland shipping fees for your country/region. Please refer to the trade terms in the contract.
Q: Does the equipment meet industrial standards for electromagnetic interference (EMI)?
A: The equipment is designed with adequate shielding and grounding measures, ensuring that electromagnetic radiation and interference during operation remain within acceptable safety limits for industrial environments.
Q: Are there any specific testing accessories for cables or GIS switches?
A: We provide custom accessories such as coupling capacitors, current-limiting resistors, and connection rails for different test samples (e.g., cable terminals, transformers, GIS bushings).
Q: Do you provide operation and maintenance training?
A: Yes, we offer comprehensive equipment manuals and can provide on-site installation, commissioning, and operator training services at the factory or customer-designated location.
Product Cases
Company Profile
certification
Our company has obtained utility model patents, ISO 9001, CE, TÜV, and other certifications, ensuring that the products meet international quality standards.
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