MOEORW WGJ Series Impulse Voltage Generator

MOEORW-WGJ Series Impulse Voltage Generator

The MOEORW-WGJ series impulse voltage generator is a standard lightning impulse/switching impulse high-voltage testing device designed and manufactured according to national and industry standards such as GB/T 16927, GB 311.1, and DL/T 848.5 . It adopts a Marx multi-stage series circuit and can stably output 1.2μs/50μs standard lightning impulse full wave, lightning chopped wave, and switching impulse wave . It is mainly used for testing the insulation withstand lightning strike and switching overvoltage capabilities of 10kV～220kV power transformers, switchgear, instrument transformers, insulators, cables, bushings, GIS and other high-voltage equipment . It is widely used in power equipment manufacturers, high-voltage laboratories, research institutes and third-party testing agencies.

The equipment consists of an impulse voltage generator, a DC charging power supply, a weakly damped capacitor voltage divider, an IGCS/PLC fully automatic measurement and control system, a waveform tuning resistor, and an automatic grounding protection device , forming an integrated testing system. It supports manual/automatic/program control and can complete charging, triggering, grounding, waveform acquisition, data storage, and test report output with one click.

Product Selection Table

Model	Maximum output voltage	Nominal energy	Number of stages / Single-stage voltage	Core professional configuration	Suitable for test sample voltage levels	Selection Guide
MOEORW- WGJ05	100kV	5kJ	Level 2/50kV	Integrated box-type structure, weakly damped capacitor voltage divider, PLC fiber optic control	10kV and below	An entry-level, small-capacity model suitable for basic impact testing of small products up to 10kV; compact size and space-saving.
MOEORW- WGJ25	200kV	5kJ	Level 2/100kV	Dry-type fully insulated capacitors, IGCS-6000 intelligent control system, fiber optic signal transmission	10kV	This 10kV standard testing machine features an ultra-compact design, eliminates the risk of oil leakage, and is suitable for testing conventional 10kV switchgear and instrument transformers.
MOEORW- WGJ26	200kV	10kJ	Level 2/100kV	Oil-filled pulse capacitor, fully automatic PLC control, and matching high-precision voltage divider.	10kV	The 10kV product is a mainstream general-purpose model with ample energy, suitable for testing most 10kV equipment such as transformers, switchgear, and insulators.
MOEORW- WGJ27	200kV	10kJ	Level 2/100kV	Dry-type fully insulated pulse capacitor, IGCS-6000 intelligent measurement and control system	10kV	With performance identical to GJ26, the dry-type capacitor design completely eliminates the risk of oil leakage, making it suitable for scenarios with high requirements for cleanliness and safety.
MOEORW- WGJ28	200kV	10kJ	Level 2/100kV	Low-damping standard voltage divider, PLC fiber optic isolation control, multi-gap ignition device	10kV	A standard, universal 200kV model, easy to operate, highly stable, and compatible with full-wave/cut-wave lightning impulse tests for all types of 10kV equipment.
MOEORW- WGJ29	200kV	10kJ	Level 2/100kV	Oil-type pulse capacitor, integrated intelligent measurement and control system, movable base	10kV	Fully automatic all-in-one model, ready to use out of the box, portable design, suitable for on-site testing and multi-scenario use, even beginners can quickly get started.
MOEORW- WGJ30	300kV	10kJ	Level 3/100kV	High-density solid-state pulse capacitors, fully automatic intelligent control systems, and tower-type insulated supports.	35kV and below	This is an entry-level model for 35kV products, suitable for basic impulse withstand voltage tests of 35kV voltage level products. It features a stable structure and high cost-effectiveness.
MOEORW- WGJ38	300kV	15kJ	Level 3/100kV	Multi-ball chopping device, high-precision measurement voltage divider, constant current charging system	35kV and below	The 35kV main model offers more energy and is suitable for full-scale impact tests on 35kV large-capacity transformers, reactors, and switchgear.
MOEORW- W GJ39	300kV	30kJ	Level 3/100kV	Tektronix digital oscilloscopes, Siemens PLC control systems, H-type high-efficiency structure	35kV and below	This 35kV high-energy-capacity dedicated model boasts a conversion efficiency of ≥90%, is compatible with heavy-duty test items such as 35kV heavy-duty transformers and large-capacity instrument transformers, and is expandable and upgradeable.
MOEORW- WGJ43	400kV	30kJ	Level 4/100kV	Weakly damped standard voltage divider, constant current charging system, tower-type scalable structure	35kV and below	This 35kV high-voltage, high-energy model has ample voltage margin and is suitable for extreme tests on high-voltage, large-capacity test specimens at 35kV levels. It can be expanded up to 1500kV.
MOEORW- WGJ46	400kV	60kJ	Level 4/100kV	High-power charging system, large multi-sphere chopping device, high-precision measurement and control system	35kV and below	This is a dedicated 35kV ultra-large capacity model, with full energy output, suitable for full-scale impact testing of heavy-duty test objects such as 35kV ultra-large capacity transformers and reactors.
MOEORW- WGJ60	600kV	30kJ	Level 6/100kV	Multi-stage voltage equalization device, anti-interference fiber optic measurement and control system, H-type scalable structure	66kV and below	The main model for 66kV voltage level, suitable for full-range lightning impulse tests of 66kV power equipment, with stable structure and strong anti-interference ability, and can be extended to 1000kV.
MOEORW- WGJ63	600kV	30kJ	Level 6/100kV	Three-gap ignition device, multi-stage parallel connection cable, and a complete set of measuring accessories.	66kV and below	This 66kV general-purpose model is suitable for impulse testing of conventional equipment such as 66kV transformers, reactors, and switchgear. It boasts strong compatibility and comes with a complete set of accessories.
MOEORW- WGJ84	800kV	40kJ	Level 8/100kV	RTB digital oscilloscope, Granlin tuning device, full anti-corona structural design	110kV and below	This is a dedicated model for 110kV voltage levels, suitable for full-wave/cutoff wave lightning impulse tests on 110kV high-voltage power equipment. It features excellent anti-corona design and can operate continuously and stably for extended periods.
MOEORW- WGJ1212	1200kV	120kJ	Level 6/200kV	High-energy, low-inductance pulse capacitor, high-end intelligent measurement and control system, and a complete set of professional measurement accessories.	220kV and below	This 220kV ultra-high voltage professional model is designed for full voltage and energy requirements, suitable for comprehensive impulse tests of 220kV ultra-high voltage power equipment, and is specifically designed for professional high voltage laboratories and large power equipment manufacturers.

Matching super simple selection tips

First, consider the voltage of the test sample : 10kV, select a 200kV model; 35kV, select a 300/400kV model; 66kV, select a 600kV model; 110kV, select an 800kV model; 220kV, select a 1200kV model.
Next, consider the sample size : the larger the sample volume and the heavier the weight, the higher the energy (kJ) value of the machine should be selected.
Finally, consider the application scenario : for mobile field use, choose W GJ29; for oil leakage prevention, choose dry-type capacitors such as W GJ25/ W GJ27; for professional laboratory use, choose W GJ1212.

Core Product Advantages

1. Compact structure and small size, easy to move and place on site : Adopting an optimized compact main circuit design , it is smaller in size and simpler in layout for the same voltage level ; The base is equipped with universal casters , which can be pushed by a single person, and can be quickly set up in laboratories and workshops without the need to dig cable trenches .

2. Plug-in tuning resistors offer quick wiring and accurate waveforms.

The wavefront/wavetail resistors are made of plate-shaped non-inductive winding with spring-loaded connectors , eliminating the need for screws and soldering wires ; they can be directly plugged in and replaced. The waveforms are smooth and burr-free, and the 1.2μs/50μs standard waveforms are set at once, eliminating the need for repeated fine-tuning during repeated testing .

3. Reliable triggering, no false triggering, and high testing efficiency.

It adopts ball-triggered ignition + three-gap ignition , with a synchronization range of ≥20% and a synchronization error rate of <1% . It can be stably triggered by both positive and negative polarities, without failure to activate or accidental explosion. It has a success rate of over 99% in continuous tests , eliminating the need for repeated charging and ball gap adjustments.

4. Stable and accurate charging, reliable data: constant current charging + SCR voltage regulation.

Charging voltage instability ≤ ±1% , amplitude adjustment error < 1%; can output as low as 10% of rated voltage , can accurately pressurize small voltage samples, has good data consistency, and can pass inspection and factory testing on the first try.

5. Fiber optic communication, strong anti-interference capabilities, and enhanced control room security

Control signals are transmitted using two-core optical fibers , completely isolating ground potential rise and electromagnetic interference caused by high-voltage discharge ; the computer/touchscreen is operated in the control room, without burning out boards, crashing, or interfering with oscilloscope waveforms , resulting in more stable long-term operation.

6. Fully automatic and integrated, even beginners can quickly get started.

The touchscreen allows direct input of voltage, number of cycles, and interval time . It supports automatic charging, automatic triggering, automatic grounding, and automatic waveform saving . It features four protections : overvoltage, overcurrent, door switch, and grounding interlock , ensuring that misoperation will not damage the equipment.

7. Long lifespan, leak-proof, and low maintenance costs.

The main capacitor adopts dry-type fully insulated/high-density solid-state packaging with an inherent inductance of <0.2μH . It is non-deformable and leak-proof. Its continuous working life is >20 years. Daily maintenance only requires wiping off dust and checking grounding. It does not require frequent oil changes, oil replenishment, or repair of leaks.

8. It has a strong load capacity and can also be used for large transformers.

With low inductance, the voltage utilization coefficient is ≥90% for load capacitance below 2000pF and ≥85% for load capacitance below 4000pF . For transformers, reactors, and other large inductance/capacitance test samples , standard waveforms can be generated without external compensation.