MS-702C relay protection tester (three-phase microcontroller with 0.2 level accuracy)

1. The standard 4-phase voltage and 3-phase current output has a 4-phase voltage and 3-phase current output, which can be easily combined for various types of protection tests. Each phase voltage can output 120V, and the current can output 120A in three parallel. The fourth phase voltage Ux is a multifunctional voltage item, which can be set to four types of 3U0 or detect synchronous voltage, or output any voltage value.

2. Single machine operation is convenient. The single machine is operated through a large LCD screen with a convenient and flexible rotating mouse, and all are 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, permanent, and conversion faults for whole group testing. Ready to use upon startup, easy and fast to operate.

3. Operation method: Connect the computer to run the complete set of Chinese operating software on the Windows platform, which can perform various large-scale, complex, and highly automated verification work. 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.

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

5. The switch quantity contact rich relay protection tester has 8 contact inputs and 4 pairs of empty contact outputs. 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.

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

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

8. There is an independent dedicated DC power output device with one 110V and 220V dedicated adjustable DC power output.

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

AC current output

Output accuracy of 0.2 level

Phase current output (effective value) 0-40A

Triple current output (effective value) 0-120A

Long term allowable operating value (effective value) of phase current 10A

Maximum output power of phase current 450VA

Maximum output power of 900VA at maximum output of triple current

Allowable working time of 10 seconds when the maximum output of the triple current is achieved

Frequency range (fundamental) 0-1000Hz (online) 0-300Hz (standalone)

Harmonic order 0-20 times (online) 0-6 times (single machine)