Microcomputer relay protection testing instrument

The microcomputer relay protection testing instrument adopts a high-speed and high-performance digital control processor as the control microcomputer, and applies a dual precision algorithm on the software to generate high-precision waveforms of each phase. Due to the use of an integrated structure, the various parts are tightly combined, the data transmission distance is short, and the structure is compact. Overcoming the problem of fewer output waveform points caused by long data communication lines and narrow frequency bands in laptop controlled measurement and control instruments.

The microcomputer relay protection testing instrument adopts a high-speed and high-performance digital control processor as the control microcomputer, and applies a dual precision algorithm on the software to generate high-precision waveforms of each phase. Due to the use of an integrated structure, the various parts are tightly combined, the data transmission distance is short, and the structure is compact. Overcoming the problem of fewer output waveform points caused by long data communication lines and narrow frequency bands in laptop controlled measurement and control instruments.

　　Main Features

Standard 4-phase voltage and 3-phase current outputMicrocomputer relay protection testerWith 4-phase voltage and 3-phase current output, it can easily perform various combination outputs for various types of protection tests. Single phase voltage Nax can output120VSingle phase current max can output40A(10 seconds), current can be output in triplicate120AThe fourth phase voltage Ux is a multifunctional voltage item that can be set to four types of 3U0 or detected for synchronous voltage, or output under any voltage value.

U single machine operation is convenient. The single machine can be operated by rotating the mouse conveniently and flexibly through the large screen LCD display, all displayed in Chinese. It can complete most of the on-site testing and verification work, verify various relays and microcomputer protections, and simulate complex instantaneous and conversion faults for whole group testing. Ready to use upon startup, easy and fast to operate.

Dual operation mode, connected to a computer and running through the full set of Chinese operating software on the Windows platform, can perform various large-scale, complex, and highly automated verification tasks. It can easily test and scan various protection settings, store test data in real time, display vector graphics, draw fault waveforms, and print reports online.

The software function can complete various large-scale complex verification tasks with high automation level, such as three-phase differential test, plant power fast switching, backup automatic switching test, line protection check synchronous reclosing, etc. It can conveniently test and scan various protection settings, perform fault playback, store test data in real time, display vector graphics, online printing reports, etc.

The switch quantity contacts are rich, with 7 contact inputs and 2 pairs of empty contact outputs for the three phases. The input contacts are compatible with empty contacts and 0-250V potential contacts, and can be intelligently and automatically recognized. The input and output contacts can be expanded according to user needs.

The machine adopts a 320 × 240 dot matrix large screen high-resolution graphic LCD display, and all operation processes are set on the display screen. The operation interface and test results are displayed in Chinese, with intuitive and clear display.

Self protection adopts a reasonably designed heat dissipation structure, with reliable multiple protection measures and power soft start, as well as certain fault self diagnosis and locking functions.

L has an independent dedicated DC power output device with one 110V and 220V dedicated DC power output.

The high cost-effectiveness belongs to cross disciplinary joint design products, which integrate multiple professional technological achievements. Combining the performance of a large testing instrument with the price of a small testing instrument, it has a high cost performance ratio.

　　secondsectionrated parameters

　　AC current output

output accuracyLevel 0.2

Phase current output (effective value)0～40A

Triple current output (effective value)0～120A

Long term allowable operating value (effective value) of phase current10A

Phase current output power420VA

Three parallel current max input microcomputer max output power900VA

Allowable working time for maximum output of triple current10s

Frequency range (fundamental wave)1～1000Hz

Harmonic frequency1～20time

　　DC current output

Output accuracyLevel 0.2

Max current output0～±10A/Each phase, 0 to ±30A/Three and one

Output load voltage20V

　　AC voltage output

Output accuracyLevel 0.2

Phase voltage output (effective value)0～120V

Line voltage output (effective value)0～240V

Phase voltage/line voltage output power80VA/ 100VA

Frequency range (fundamental wave)1～1000Hz

Harmonic frequency1～20time

　　DC voltage output

Output accuracyLevel 0.2

Phase voltage output amplitude0～±160V

Line voltage output amplitude0～±320V

Phase voltage/line voltage output power70VA/ 140VA

　　Measurement of switch quantity and time

volumetric weight