Reference Standard: DL / T624-1997 Introduction DBJB-702L relay tester is in reference to the Ministry issued a "microprocessor-based relay test device technology (draft)", based on a wide range of views of users, summarizes the advantages and disadvantages of the current domestic similar products, the full use of modern technology and advanced microelectronics devices to achieve a new type of miniaturized relay protection tester. Relay 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. Product Features 1. The relay tester with high-speed, high-performance digital control processor as the control computer, the application software to generate double-precision arithmetic precision arbitrary waveform of each phase 2. The use of high-speed D / A converters to ensure that the the full range of current, voltage accuracy and linearity 3. Imported high-power 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 compatible empty contacts and potential contacts 0 ~ 250V 5. The instrument uses a high-resolution 320 × 240 dot matrix blue backlit LCD display for display devices in the chassis backplane 6. upload feature special way adjustable DC power output , sub-110V and 220V two steps can be used as an auxiliary power field test technical indicators 1, the output AC current output accuracy: 0.5 phase current output (RMS): 0 ~ 40A three and current output (RMS): 0 ~ 120A phase current is allowed to work for a long time value (RMS): 10A phase current maximum output power: 420VA three and a maximum output current when the maximum output power: 900VA maximum output current and three allowable working hours: 10s frequency range (fundamental): 20 ~ 1000Hz harmonic number: 1 to 20 times 2, the DC output current output accuracy: 0.5 Current output: 0 ~ ± 10A / per phase, 0 ~ ± 30A / three and maximum output load voltage: 20V 3, AC voltage output Output Accuracy : 0.5 phase voltage output (RMS): 0 ~ 120V line voltage output (RMS): 0 ~ 240V phase voltage / line voltage output power: 80VA / 100VA frequency range (fundamental): 20 ~ 1000Hz harmonic number: 1 ~ 20 times 4, the DC output voltage output accuracy: 0.5 phase voltage output amplitude: 0 ~ ± 160V line voltage output amplitude: 0 ~ ± 320V phase voltage / line voltage output power: 70VA / 140VA 5, switch and Time measurement DBJB-702L Note 7 Road empty switch input contacts: 1 ~ 20mA, 24V potential contact Access: "0": 0 ~ + 6V; "1": + 11V ~ + 250V switching outputs two pairs of DC: 220V /0.2A;AC:220V/0.5A time measurement Measuring range measurement accuracy 0.1ms 0.1ms ~ 9999s Volume weight: DBJB-702L Dimensions 400 × 300 × 180mm3 single weight 22kg Power supply AC 220V ± 10%, 50 / 60Hz environment Temperature -10 ℃ ~ + 50 ℃