Product introduction
The impulse voltage test system is a device used to test the insulation performance of power equipment under transient high voltage conditions. It is mainly used for the impact resistance test of high-voltage equipment such as transformers, switchgear, cables and insulators. Its working principle is to release high voltage in an instant through the energy storage capacitor to generate an impulse waveform simulating lightning strikes (such as standard lightning waves 1.2/50µs or operating impulse waves 250/2500µs), and apply the impulse voltage to the device under test to detect its insulation strength and withstand capacity under high voltage transients.
Product Parameters
| harging voltage | Setting range | 0 ~ 100kV |
| Scope of work | 10.0~100.0kV | |
| Setting deviation | ≤±1% | |
| Instability degree | ≤±1% | |
| Setting resolution | 0.1kV | |
| Charging time | Setting range | 30~180s |
| Setting resolution | 1s | |
| Alarm delay | 2s | |
| Number of pressure | Setting range | 1~999 |
| Protection setting | Overcurrent protection value | configurable |
| Overvoltage protection value | configurable | |
| Dynamic charge protection | Can be Selected | |
| Output impact stability | Greater than 99% | |
| Number of voltage boosting | setting range | 1~999 |
Product features
High Voltage Output Capability
The impulse voltage test system has extremely high voltage output capability and can generate transient high voltages of up to hundreds of kilovolts or even megavolts to simulate lightning strikes or operating overvoltages. This high voltage output mainly relies on the combination of energy storage capacitors and high voltage generators, which can release a large amount of energy in an instant to form a standard impulse waveform. High voltage output capability is the core feature of the system. It can test the insulation performance and durability of equipment under extreme voltage conditions, ensure that the equipment can withstand the impact of lightning strikes and voltage mutations in actual use, and is widely used in the insulation strength test of transformers, cables and insulators.
Precise Waveform Control
The impulse voltage test system has precise waveform control function, which can generate impulse waveforms of different standards, such as standard lightning wave (1.2/50µs) and operating impulse wave (250/2500µs). Waveform control is achieved through waveform adjustment circuit, which can accurately control the rise time and duration of the waveform to simulate various transient overvoltage conditions. Different test standards vary according to the actual application requirements of the equipment. For example, the impulse voltage test standard for transformers stipulates that a 1.2/50µs lightning impulse wave should be used to simulate the response and tolerance of the transformer when it is subjected to lightning impulse. The precise waveform control feature enables the system to meet the requirements of different test standards and helps to comprehensively evaluate the response and tolerance of the equipment under different impulse conditions.
Multiple Protection Functions
The impulse voltage test system is equipped with multiple protection functions, including overvoltage protection, overcurrent protection, short circuit protection and overheating protection. These protection functions are achieved by automatically detecting abnormal conditions (such as voltage or current exceeding the preset range) and immediately cutting off the output power, avoiding equipment damage or test accidents. Multiple protection functions are particularly important because impulse voltage testing involves extremely high transient voltages and carries greater risks. The protection mechanism can effectively reduce safety hazards during the test.
Main application scenarios of impulse voltage test system
Power equipment type test: used for lightning impulse withstand voltage test of transformers, transformers, bushings, insulators, lightning arresters and other equipment.
High voltage switchgear testing: to inspect the impact insulation performance of GIS, circuit breakers, isolating switches and other equipment.
Cable and line equipment testing: Evaluate the lightning impulse resistance of high-voltage cables, overhead lines, and related insulation components.
Research and Laboratory: Used for conducting impact characteristic research on insulation materials and electrical equipment in universities, research institutes, and high-voltage laboratories.
Product delivery and quality testing: Assist power equipment manufacturers in product quality verification and relevant standard compliance testing.
Frequently Asked Questions
1. Can the impulse voltage test system test cables?
Okay. This device can be used for lightning impulse full wave, truncated wave, and operational impulse wave tests on cables and cable accessories to assess their impulse insulation level.
2. What measuring equipment is required for the impulse voltage test system?
Usually, equipment such as capacitor dividers, measuring cables, and high-speed oscilloscopes are required to measure the waveform and amplitude of the impulse voltage.
3. What parameters are required when purchasing a lightning impulse voltage generator?
It is recommended to provide the following information during procurement: maximum test voltage, sample type, sample voltage level, sample capacitance, required impulse waveform, lightning full wave/cutoff/operation wave requirements, test standards, and laboratory space conditions. These parameters will directly affect the generator stage, energy, load capacity, and configuration of the measurement system.
4. What application areas are suitable for lightning impulse voltage generators?
Mainly used in power equipment manufacturing enterprises, high-voltage testing laboratories, power research institutions, power research institutes, universities, and power system related testing institutions, it can be used for product design verification, type testing, factory testing, insulation coordination, discharge mechanism research, and other research.
5. Can Wuhan UHV provide customized lightning impulse voltage test system?
Equipment configuration can be made according to the customer's test voltage, energy, sample capacity, waveform requirements, and laboratory conditions. The product itself has modular and expandable design, and suitable specifications can be selected according to actual testing needs.
6. What are the characteristics of the lightning impulse voltage generator for Wuhan UHV?
The impulse voltage test system has the characteristics of automatic control of constant current charging, convenient wave adjustment, good synchronization performance, reliable operation, small circuit inductance, and large load capacity; Some models adopt a modular tower structure and can be configured with automatic control, voltage divider, high-speed oscilloscope, and waveform analysis software.
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