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HMJBC-903 Secondary Injection Set Relay Current Protection Test Device Microcomputer Relay Test System Tester

relay protection tester
Secondary current Injection
relay tester

Product Description


HMJBC-903 relay protection tester meet 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.


  1. Classic Windows XP operation interface, friendly man-machine interface,
  2. This Windows XP system has its own recovery function to avoid system crash caused by illegal shutdown or misoperation.
  3. Equipped with ultra-thin industrial keyboard and photoelectric mouse,
  4. The main control board adopts DSP + FPGA structure and 16 bit DAC output.
  5. The high fidelity linear power amplifier ensures the accuracy of small current and the stability of large current.
  6. USB interface is used to communicate with PC directly without any connecting line, so it is convenient to use.
  7. can be connected to laptop (optional) to run.Laptops and industrial computers use the same set of software.
  8. It has the function of GPS synchronization test.
  9. 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.
  10. 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.


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--240V
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--± 160V, accuracy: 0.2% ± 5mv
Output amplitude of line voltage 0--±320V
Phase voltage / line voltage output power 90VA/180VA
5.Switching value terminal
Switch input terminal 8yes
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
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 AC110V±10%,60Hz,10A