25kA Impulse Current Generator

MOEORW-W320-25kA Impulse Current Generator

The Wuhan Moen Intelligent MOEORW-W320-25kA Impulse Current Test System is designed for indoor high-voltage testing. It has a rated impulse current of 25kA and is compatible with national/IEC testing standards.

Lightning Impulse Current Test Set features a 4-level tower structure, intelligent measurement and control, and manual/automatic operation, enabling the generation of multiple types of shock waves with accurate measurement and comprehensive safety protection.

Impulse Current Generator is suitable for high-voltage impulse current testing scenarios such as power equipment inspection, scientific research experiments, and product certification.

The MOEORW-W320-25kA impulse current generator is an indoor high-voltage testing device developed by Wuhan Moen Intelligent Electric Co., Ltd. With a rated impulse current of 25kA, it is suitable for various impulse current testing needs in the power industry. The overall design adopts a modular, tower-type structure, integrating a full range of functions including DC charging, body discharge, precise measurement, and intelligent control. Its core components are imported, combining ease of operation, measurement accuracy, and operational stability. It meets the impulse current testing requirements of national and IEC standards and is a core testing device for power equipment inspection, scientific research, and product certification.

1. Resistor voltage divider

Main technical requirements

The high-voltage arm consists of a single-stage resistor.

Rated parameters: 150kV/1.5KΩ

The rated lightning impulse withstand voltage is 150kV.

Low voltage arm parameters: 400V/1.25Ω

The voltage divider ratio is 2500:1.

Voltage divider accuracy Kε≤1%

Overshoot: β≤20%

Square wave response time: ≤ 10ns

2. Inrush current measuring shunt

The impulse current measurement uses a shunt, with a current measurement capacity of 10kA / 25kA ; it meets the current requirements for the above measurement, the response time meets the international requirements, and a complete measuring cable is provided;

Structure: The shunt is a shielded coaxial shunt made of manganese copper sheet, which features stable measurement and good response characteristics.

Shunt secondary output voltage: ≤300V

Square wave response time: ≤5ns

▲ It is suitable for harsh indoor environments, with a grounding resistance requirement of <0.5Ω, and has comprehensive anti-interference and anti-potential measures.

▲ The charging system is a thyristor constant current voltage regulator with a bilateral symmetrical voltage multiplier. The voltage deviation and instability are both ≤±1%, with an accuracy of 1%, and it can automatically switch polarity.

▲ The main body is a 4-stage tower-type combined structure, which is convenient for disassembly, assembly and testing. The single-stage rated voltage is 150kV, and it can switch to generate lightning waves, switching impulse voltage waves and short-circuit impulse currents.

▲ The core components have excellent performance: the pulse capacitor has good insulation and strong tensile strength; the resistor is wound without inductance; and the shunt/voltage divider has high measurement accuracy and fast response.

▲ The measurement and control system is intelligent, controlled by an industrial computer and PLC, with a sampling rate of 1.25GS/S, supporting both manual and automatic operation, and can activate emergency manual function in case of failure. It also features automatic waveform analysis and report output.

▲ It has comprehensive safety protection, including automatic grounding, door interlock, overcurrent and overvoltage protection, emergency stop and test area alarm functions;

▲ After-sales technical training is provided, equipment failures are responded to within 2 hours and engineers handle them promptly . The core control components are imported, ensuring stable and reliable operation.