Main circuit schematic of the relay test equipment / relay test equipment relay test equipment - input the AC220V power by the insurer by the output control the relay K1 into the the dual brushless regulator T1 input terminal T1 large knob to adjust the power into the isolation transformer T2 (part-time up-flow), up-flow three-tap output, one tap AC0-250V output, rated current 3A; the the tap output voltage by the rectifier filter output 0-350V DC voltage; two pumping 15V (10A), the tap all the way through the sensor through the relay control output 0-10A AC current output 0-500mA AC current resistance all the way through, all the way to the conversion of the relay output 0-10A or 0-500mA DC current; third tap 10V (100A) current terminal, the tap through the sensor side output 100A current, the circuit with a load capacity more album (8) strong, but the output is slightly overloaded, not a long time in current state. Thermal relay calibrator relay test equipment and auxiliary circuit relay test equipment and auxiliary circuit with the main circuit, AC220V power by the insurance regulator into the double brush T1 knob to adjust the amount of voltage can be tuned directly by isolating transformer T4 Output 0-20V or 0-250V AC voltage or 0-350V DC voltage, this circuit rated current of 1A. Press the auxiliary loop output control switch, adjust knob to output. Measurement route back to the large knob to adjust the output of the main circuit AC "0-250V", "0-500mA", "0-10A", "0-100A", DC 0-350V, 0-500mA " 0-10A conversion equipment circuit board relay, each switch a file memo can monitor the amount of the corresponding output. 0-500mA files included in the file of the 0-10A. Use under both "0-10A" that is, "0-500mA" monitor. Built-in 6-digit stopwatch time measurement equipment, electric stopwatch internal start-up can also be external start. Internal startup, press the "output control" switch to start the stopwatch, stopwatch terminal through the contacts shorted device panel to stop the stopwatch. The stopwatch has a separate power switch can not turn off the stopwatch. Sound and light tips the circuit device built-in sound and light tips circuit in the the measured circuit breaker contact action, you can contact the access chamber sound and light tips jack test chamber sound an alarm or light, suggesting that the contact action of the breaker. Relay test equipment - Relay Protection Tester characteristics: 1, embedded host, equipped with ultra-large-scale programmable logic device (CPLD) host high-speed high-performance embedded computer system equipped with a CPLD, fast response, transmission frequency bandwidth, weekly on the fundamental wave 500 points high-density fitting sine wave output waveform is smooth, non-harmonic component. Due to the output points, and the through precise filtering circuit, waveform distortion is minimal, in the output of the harmonic, even for the 9 th harmonic, 450Hz can also reach 55 points per cycle of the high-density