1.TPFKC-A Transformer On-Load Tap Changer TesterStrong comprehensive measurement capability. In one instrument, it can measure various parameters of the on-load tap changer, such as whether there are breakpoints during the selection and switching process, transition waveforms, transition time, transition resistance, and three-phase synchronization.
2、Comprehensive analysis of measurement results. Users can analyze the resistance value of each point and segment in the waveform, the time of each segment, and the three-phase asynchronism through the large-screen LCD and function keys. Through screen analysis, they can understand the changes of various parameters of the three-phase switch at each instant during the switching process. They can also print, store, and review historical waveforms for analysis and comparison.
3、Print output. The instrument is equipped with a panel-mounted front paper-loading printer, which can directly archive the test report of the switch.
4、Menu-driven, flexible operation. All operation functions, prompts, and measurement results are displayed on a large-screen LCD with 240×128 dots. Users only need to press the function keys according to the prompts to perform measurements.
5、The instrument is equipped with anti-shock and overvoltage protection circuits. All external leads are sent to the measurement circuit through the protection system, preventing damage to the instrument due to instantaneous discharge of large inductors or wiring errors.
6、Good anti-interference performance. The all-aluminum alloy chassis and the built-in power noise filter and anti-interference circuit enable reliable measurement in sites with poor power quality and strong electromagnetic field interference.
7、Data retention after power-off. The measured data and waveforms can be stored separately in the instrument, and the stored content will not be lost due to power failure, especially suitable for returning to the laboratory for further analysis and archiving after on-site tests.
Technical Specifications
1、Three independent test power supplies, maximum output current: 0.5A
2、Instrument sampling rate: 10~20KHz
3、Maximum storage time for a single waveform: 6.4 seconds
4、Transition resistance measurement range: Y/0 type transformer 1~40Ω, Y type transformer 1~20Ω
5、Measurement accuracy: 1~5Ω, Δ=±10%、5~40Ω, Δ=±5%
6、Time and synchronization error: Δ≤±1%
7、Display: 240×128T, T6963C controller
8、Printer: panel-mounted front paper-loading printer
9、Processing part:
80C320 high-speed 8-bit microprocessor, program memory 32K
Power-off data retention memory 512K bytes
High-speed A/D converter, maximum sampling rate up to 400KHz
10、Working power supply: AC 220V±10%, power ≤200
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.