ALC883 Switch Characteristic Tester
After searching, we have not been able to find product information for a switch characteristic tester named "ALC883". This is likely a misspelling of the model name, or it may be a specific internal code.
However, regarding switch characteristic testers (also known as high-voltage switch dynamic characteristic testers or high-voltage circuit breaker mechanical characteristic testers), I have compiled the functional features, technical specifications, and selection references for mainstream equipment currently on the market, hoping to provide you with assistance:
1. Core Functions and Technical Features
Modern switch characteristic testers are mainly used to measure the mechanical dynamic characteristic parameters of high-voltage switches of various voltage levels (such as vacuum, SF6, minimum oil, and multi-oil circuit breakers), and typically have the following advantages:
Independent measurement of multiple breaks: Mainstream equipment usually features independent multiple breaks (such as 6 breaks, 12 breaks, etc.), which can automatically identify the open/close status of each break and prompt the connection status, effectively preventing misoperation.
Powerful graphical analysis: Equipped with powerful graphical analysis functions, it can display waveforms and measured data on the same screen, making the testing process more intuitive.
Comprehensive parameter testing: Supports reclosing tests (including close-open, open-close, open-close-open parameter measurements), supports both electric and manual open/close tests, as well as high and low voltage tests (automatically finding the minimum open/close voltage).
Safety protection mechanism: The device has a built-in delay protection function that automatically cuts off the coil voltage after the circuit breaker operates, thereby effectively protecting both the circuit breaker and the test instrument; the independent open/close control unit design ensures that even if one control circuit is damaged, the overall use is not affected.
Intelligent automation: Supports fully automatic circuit breaker aging tests (life tests) and parameter measurement for vacuum contactors (single coil).
2. General Technical Specifications (Reference)
Time measurement: The test range is typically between 0.01ms and 12000ms. The accuracy is generally 0.5% ± 2 digits within 1ms to 100ms, and 1% ± 2 digits for times greater than 100ms.
Speed measurement: Supports measurement of the speed at the instant of contact separation (or closure) and the average speed over a specified time period (travel segment or angle segment). The speed measurement range varies depending on the sensor used (such as 1mm, 0.1mm, or 360° angle sensors).
Travel measurement: Can accurately measure the travel of the moving contact and the contact travel (opening distance).
3. Relevant Industry Standards
The research, development, production, and testing of this instrument must strictly comply with relevant national and power industry standards, such as:
GB 1984-2003 "High-voltage AC circuit breakers"
DL/T 846.3-2004 "General technical specifications for high-voltage test equipment - Part 3"
JJG 1120-2015 Verification Regulation of Switch Characteristic Testers
If you can confirm the correct spelling of "ALC883" or provide the specific application scenario of the instrument (such as test voltage level, switch type, etc.), I can provide you with a more accurate answer.
