Basis TKJB-702 three-phase relay protection tester TKJB-702 relay protection tester is in reference to the Ministry issued a "microprocessor-based relay test device technology (draft)", based on the user listen comments summarize current strengths and weaknesses of the domestic like product, full use of modern technology and advanced microelectronics devices to achieve a new type of miniaturized relay protection tester. Relay protection tester uses a separate stand-alone operation, advanced structure can also join the laptop to run. Host built a new generation of high-speed digital signal processor computer, true 16-bit DAC module, the new modular high-fidelity power amplifier, comes with a large LCD display and flexible rotating mouse controller. Stand-alone independent operation already has a strong function, can be most trials, coupled with a more powerful computer to run the operating functions. Small size, high accuracy. Both with large tester superior performance, advanced features, but also has a small tester compact and flexible, easy to operate, high reliability, high cost performance. Following is a good tool to protect workers in handy. Products nickname relay protection tester, computer following the security instrument, relay tester, three-phase relay tester, following the security tester, three successive security tester, three-phase relay calibrator, following the security check Miriam, three successive insurance calibrator, following the security instrument product features 1, the relay protection tester using high-speed, high-performance digital control processor as the control computer, the application software to generate double-precision arithmetic on arbitrary precision waveform of each phase 2, using high-speed D / A converter to ensure the full range of current, voltage accuracy and linearity 3, using imported high-fidelity amplifier circuit modular power components for power output stage, combined with careful, rational design of thermal structure with a large enough power redundancy and heat capacity 4, switch input circuit is compatible empty contacts and potential contacts 5 0 ~ 250V, the instrument uses a high-resolution 320 × 240 dot matrix display blue backlit LCD display for 6 devices all the way to the floor of the chassis has a special jacket adjustable DC power output, sub-110V and 220V two tranches can be used as an auxiliary power http://www.whgdmk.com field trials