TMTECSA offers an intro video on residual current constant current sources, plus testers for RCD,

Compared to programmable voltage sources, this device primarily delivers current. Through this video, we can observe via an oscilloscope how it captures waveform output with clarity and precision, providing a constant current source for accurate and convenient residual current testing on products.
If you have any questions about our videos or wish to engage in technical exchanges, please feel free to contact us: - Official Website: [www.tuomiantech.com](http://www.tuomiantech.com){target="_blank"} - You can also directly contact our professional technicians at: +8613916839258 (Mr. Xiong, same number for WeChat) Shanghai Tuomian Technology's main models include: Residual Current Operated Product Function and Characteristic Testers / Leakage Circuit Breaker Testers / Leakage Protector Testers, with specific models such as: TMTE531B, TMTE531B-EV, TMTED214B, TMTE213A, etc.
Full-function automated RCD testing & residual current operation characteristic analysis Tripping current measurement S2 surge time test S1 surge time test Closing time verification Non-actuation duration test 10x half-wave impulse current immunity TEST button function verification Remote-controlled automated testing (supports open-source command protocols for secondary development) Comprehensive standards compliance IEC/GB/UL standards coverage

Видео TMTECSA offers an intro video on residual current constant current sources, plus testers for RCD, канала tuomian