Touchscreen Pressure Measurement Device

Isolation switches are high-voltage switchgear widely used and applied in the power system. They operate directly exposed to the atmosphere, thus directly and severely affected by environmental and climatic conditions, with relatively harsh operating conditions. Outdoors, isolation switches are susceptible to attacks from rain, dust, and harmful gases, particularly the contact parts. These environmental factors can lead to poor contact and overheating issues. Poor contact can further result in spring tempering, reduced pressure, creating a vicious cycle that may ultimately damage the contacts and cause accidents.

Currently, most maintenance personnel determine the contact condition of conductive parts by measuring the circuit resistance. However, this method has limitations because the circuit resistance value reflects the overall performance of the conductive circuit, and it cannot directly indicate changes in contact resistance. Therefore, relying solely on the circuit resistance value to judge the quality of contact may not be accurate enough.

To address this issue, an intelligent testing instrument has been developed for measuring the contact pressure of high-voltage disconnector fingers. This tester only requires the sensor of the test clamp to simulate a contact point, opening at the contact position of each pair of fingers, to quickly display and memorize the contact pressure at that moment. This method is not only convenient and accurate but also safe, effectively solving a major challenge in measuring finger contact pressure.

The main technical specifications of this tester include working temperature range, atmospheric pressure, power voltage, measurement range, accuracy, measurement diameter (contact gap), power-on time, charging method, sensor signal cable length, insulation resistance, and dielectric strength, among others. These parameters ensure the stability and reliability of the tester under various conditions, enabling it to accurately measure contact pressure, providing a strong guarantee for the safe and stable operation of the power system.

Moreover, this testing instrument is not only suitable for on-site maintenance of power systems but also for the inspection of contact finger pressure in isolator switch manufacturing plants. By altering the shape of the pressure sensor, it can also measure the contact finger pressure of circuit breakers, offering broad application prospects.

Overall, as an essential component of the power system, the precise measurement of contact pressure in isolators is crucial for ensuring the safe and stable operation of the power system. The development and application of intelligent testing instruments provide a more convenient, accurate, and secure solution for measuring contact pressure.