The working principle and product characteristics of a high-voltage switch mechanical characteristic tester

The high-voltage switch mechanical characteristic tester is a new specialized instrument for detecting the mechanical dynamic characteristics of high-voltage circuit breakers. Adopting high-tech technology and integrating computers, printers, measurement interface circuits, and operating power supplies, it is a new specialized instrument for high-voltage circuit breaker detection. The tester is equipped with two displacement sensors suitable for testing different distances and accuracies. The instrument’s automatic recognition system identifies the selected sensors and completes distance and speed measurement for low oil, high oil, sulfur hexafluoride, and vacuum high-voltage circuit breakers. In the design of the instrument, only one closing (opening) action is required, which can sample and record all data of six fractures, display the measurement results with a single key operation, and print and record the measurement data. It can also print the current waveform of six fractures and the time characteristic curve of the moving contact of one fracture.

Testing Principles

The high-voltage switch mechanical characteristic tester adopts a four terminal wiring method of circuit resistance testing, which actually tests the dynamic resistance during the switch action process and can be used to test the SF6 high-voltage circuit breaker with graphite contacts. The working principle of the dynamic resistance testing channel is to load a 10A constant current source on the two terminals of the graphite contact of the circuit breaker, and connect the other two test signal lines (voltage signals) at both ends of the circuit breaker, Test the dynamic voltage change waveform within 200mV during the action of the graphite contact to determine the position of the metal contact of the circuit breaker, and then infer the true and accurate position of the graphite contact based on its length.

Instrument characteristics

① Can be operated both electrically and manually

② Mechanical and dynamic characteristics testing of various high-voltage circuit breakers suitable for voltage levels up to 500KV

③ Measurable itinerary and custom itinerary

④ Capable of achieving single closing, single opening, close opening, reclosing, and re opening operations of circuit breakers

⑤ Convenient wiring, simple operation, and only one closing (opening) action is required to obtain all closing (opening) data. You can choose to save 50 sets of data, provide later query and upload to the computer for permanent storage, and also access and print all data and motion curve graphs on site

⑥ The machine is equipped with a clock circuit, which can display the current year, month, day, hour, minute, and second. Even if the power is off, it can automatically save the set data and test data

⑦ The machine is equipped with a delay protection function, and the circuit breaker can automatically cut off the power supply after action, which effectively protects the circuit breaker equipment and high-voltage switch tester

⑧ The instrument is equipped with a built-in DC power supply, with a selectable range of 30-270V/10A. There is no voltage drop caused by the output of a conventional rectifier power supply, making it very accurate for testing switch action voltage

⑨ Can dynamically analyze the relationship between the travel and speed of the circuit breaker every 1ms for you

⑩ What model and type of circuit breaker can be tested

ZC-300B circuit breaker analyzer can be used to test and measure the mechanical characteristic parameters of high voltage switch ( such as vacuum, six fluoride, less oil, oil and other power systems. The measurement data is stable, strong anti-interference ability, can be in the 500KV level and below the power station to do experiments, wiring is convenient, simple operation, is the most convenient tool for high-voltage switch maintenance test.

Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com