In the field of high-voltage power testing, safety is the bottom line that cannot be touched. As the core equipment for simulating lightning overvoltage, the lightning impulse voltage generator has an output voltage of hundreds or even thousands of kilovolts. Any negligence during the testing process may cause equipment damage or even personal injury. For power equipment manufacturers, purchasing a lightning impulse voltage generator not only depends on how high the voltage can output and how standard the waveform is, but also on how reliable the safety guarantee is.
Wuhan UHV Power Technology Co., Ltd. has been deeply involved in the field of high-voltage electrical measurement for nearly 22 years. The systematic design of its UHV series lightning impulse voltage generator test device in terms of safety and reliability is becoming a key reason for more and more power equipment manufacturers to choose it.
Multiple protections, building a comprehensive safety barrier
The safety protection of the lightning impulse voltage generator test device is never a single measure, but a complete protection system. Wuhan UHV integrates overvoltage protection, overcurrent protection, grounding protection, and emergency shutdown functions in this series of equipment, and is equipped with reliable insulation isolation and safety interlock devices.
In terms of overvoltage protection, the equipment can automatically cut off the power supply when the output voltage exceeds the set value, preventing damage to the tested equipment due to high voltage. Overcurrent protection monitors the current in real time and acts quickly when the current increases abnormally, protecting equipment and personnel safety. Grounding protection ensures that the equipment can introduce dangerous currents into the ground in abnormal situations, while the emergency stop function provides operators with a means to quickly cut off the power supply in case of emergencies.
In addition, the equipment also adopts a zero start design to ensure that each test starts from zero voltage and avoids damage to the equipment and test samples caused by surge currents. The protection setting value can be flexibly adjusted according to user needs, ensuring safety without sacrificing the flexibility of the experiment.
These protective functions are not simply stacked, but carefully designed and rigorously tested to quickly respond to various abnormal situations during equipment operation. As an industry user once said, "In high-voltage testing, an additional layer of protection gives you more peace of mind
Anti interference design and wide temperature range operation, reliability can withstand extreme tests
High voltage test sites are often accompanied by strong electromagnetic interference, which poses a serious challenge to the stable operation of equipment. The lightning impulse voltage generator of Wuhan ultra-high voltage adopts constant current charging automatic control technology, with high degree of automation and strong anti-interference ability. By using shielding grounding technology and filtering circuits, the equipment can effectively resist on-site electromagnetic interference and maintain testing stability in complex power grid environments. It is convenient to adjust waves, easy to operate, has good synchronization performance, and reliable action.
In terms of environmental adaptability, the equipment supports wide temperature operation from -30 ℃ to 50 ℃, overcoming extreme working conditions such as high altitude and strong electromagnetic interference. In the power supply project of the Sichuan Tibet Railway, the Wuhan ultra-high voltage equipment successfully completed the impact test at an altitude of 4500 meters, and the data consistency was certified by the expert group. This practical achievement validates its reliability in extreme environments.
Intelligent monitoring and precise control, reducing risks from the source
Safety is not only about passive protection, but also about proactive prevention. The lightning impulse voltage generator of Wuhan UHV adopts intelligent closed-loop control technology, with a charging voltage feedback accuracy of up to 0.5%. Combined with a 1GS/s high-speed sampling system, it can achieve microsecond level fault location. The voltage fluctuation rate of the equipment is less than 0.1%. This high-precision control capability enables the equipment to detect anomalies in a timely manner during operation and respond accordingly, reducing safety risks from the source.
The equipment is equipped with a Siemens PLC fully automatic control system, which supports constant current voltage regulation, automatic ball distance tracking, and continuous cycle testing. Manual and automatic modes are optional. The automated operation mode reduces human intervention and lowers safety hazards caused by operational errors.
For power equipment manufacturers, a lightning impulse voltage generator not only needs to complete testing tasks, but also ensure that every test is safe and controllable. Wuhan UHV provides the industry with a systematic safety protection design, reliability that can withstand extreme tests, and practical verification of national level major projects, providing a set of safety guarantee solutions from equipment selection to long-term use. As a power engineer who has been using the equipment for a long time said, "Testing on Wuhan UHV equipment is reassuring"
