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MEWOI-S903 3phase relay protection test set,Microprocessor Protection 3Phase Relay Tester
| Contact Us for Quotation | Email：mewoi@mewoi.com | Whatsapp: +8618620373879 |
MAIN FEATURES
1Meet all test requirements on site.The instrument has standard four phase voltage and three-phase current output. It can test not only various traditional relays and protection devices, but also various modern microcomputer protections, especially for transformer differential protection and standby automatic switching device. The test is more convenient and perfect. |
| 2All kinds of technical indexes fully meet the standard of DL / t624-1997 "technical conditions for microcomputer based test device of relay protection" issued by the Ministry of electric power. |
| 3Classic Windows XP operation interface, friendly man-machine interface, easy and fast operation; high performance embedded industrial control computer and 8.4 inch resolution 800 × 600 TFT true color display screen, can provide rich and intuitive information, including the current working state of the equipment and various help information. |
| 4This Windows XP system has its own recovery function to avoid system crash caused by illegal shutdown or misoperation. |
| 5Equipped with ultra-thin industrial keyboard and photoelectric mouse, it can complete all kinds of operations through keyboard or mouse just like ordinary PC. |
| 6The main control board adopts DSP + FPGA structure and 16 bit DAC output. It can generate 2000 high density sine wave per week for fundamental wave, which greatly improves the quality of waveform and the accuracy of the tester. |
| 7The high fidelity linear power amplifier ensures the accuracy of small current and the stability of large current. |
| 8USB interface is used to communicate with PC directly without any connecting line, so it is convenient to use. |
| 9. Can be connected to laptop (optional) to run. Laptops and industrial computers use the same set of software, so there is no need to relearn the operation method. |
| 10.It has the function of GPS synchronization test. The device can be built-in GPS synchronous card (optional) and connected with PC through RS232 port to realize synchronous test of two testers in different places. |
| 11. Equipped with independent dedicated DC auxiliary voltage source output, the output voltage is 110V (1a), 220V (0.6A).It can be used for relays or protection devices that need DC power supply. |
| 12.It has the function of software self calibration, which avoids opening the case to calibrate the accuracy by adjusting the potentiometer, thus greatly improving the stability of accuracy. |
TECHNICAL SPECIFICATION
1. AC current source (3 * 30A)
Single phase current output (RMS) | 0 -- 30A / phase, accuracy: 0.2% ± 5mA |
Three phase parallel output (RMS) | 0 -- 90A / three phase in phase parallel output |
Allowable working value of phase current for a long time (effective value) | 10A |
Maximum output power per phase | 300VA |
Maximum output power of three phase parallel current | 800VA |
Maximum output allowable working time of triple parallel current | 5s |
frequency range | 0 -- 1000Hz, accuracy 0.001Hz |
Harmonic number | 2--20second |
phase | 0--360The accuracy is 0.1 degree |
2. DC current source
DC current output | 0--± 10A / phase, accuracy: 0.5% ± 5mA |
3. AC voltage source
Single phase voltage output (RMS) | 0 -- 120V / phase, accuracy: 0.2% ± 5mv |
Line voltage output (RMS) | 0--250V |
Phase voltage / line voltage output power | 75VA/100VA |
frequency range | 0 -- 1000Hz, accuracy: 0.001Hz |
Harmonic number | 2--20second |
phase | 0--360Degree, accuracy: 0.1 degree |
4. DC voltage source
Single phasevoltage output amplitude | 0--± 150V, accuracy: 0.2% ± 5mv |
Output amplitude of line voltage | 0--±300V |
Phase voltage / line voltage output power | 90VA/180VA |
5. switching value terminal
Switch input terminal | 8pairs |
Air contact | 1 -- 20 mA, 24 V, internal active output of the device |
Potential reversal | Passive contact: low resistance short circuit signal Active contact: 0-250V DC |
Switch output terminal | 4Yes, no contact, breaking capacity: 110V / 2a, 220V / 1a |
6. others
Time frame | 1ms -- 9999s, measuring accuracy: 1ms |
Volume and weight of portable series single machine | Volume 328 x 168 x 250mm3, about 12.5kg |
Power Supply | AC220V±10%，50Hz，10A |
