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      YCBH-3 Microcomputer Relay Protection Tester

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      1.Main characteristics
      Meets all the requirement of field tests. This tester with standard 4 phase voltage, 3 phase current output, voltage 125V/phase, current 40A/phase, 3 phases in parallel can up to 120A.  Digital Signal Processor Microcomputer. Not only test the traditional relays and protectors, but also test the modern micro computer replays, special for transformer differential protection and transfer equipments
      All technical indicators fully meet the standard DL/T624-1997: Technical condition of the relay computer test device.Classic Windows XP operating interface, friendly man-machine interface, easy and fast to operate; High-performance embedded industrial control computer and 8.4 inch 8.4 - inch resolution of 800 × 600 TFT true color display which provides rich visual information, includes the current working condition and all kinds of help information.
       The Windows XP system comes with the restore function; avoid system crashes caused due to illegal shutdown, or malfunction, etc.
       Equipped with ultra-thin industrial keyboard and optical mouse, complete a variety of operations using keyboard or mouse the same as ordinary PC.
       The main control board is DSP + FPGA architecture, 16 bit DAC output, generates high - density sine wave 2000 points each circle to fundamental wave, which greatly improve the wave quality and the accuracy of the test instrument.
       Using high-fidelity linear amplifier. Both to ensure the accuracy of a low current, but also guarantee the stability of the high current.
       USB directly connect with PC, without any adapter cable, easy to use.
       Can be connected to a laptop computer (optional).Laptop computers and industrial machines use the same software, no need to re-learn the methods of operation.
       With GPS synchronization test function. The device can be built-in GPS synchronization card (optional) connects with PC by RS232; people can do remote synchronization swap test for the two testers.
       With a separate DC auxiliary voltage source, output voltage 110V(1A),220V(0.6A), provides relays or protective devices which require DC power.
       The software with self calibrating function, which avoid to calibrate accuracy by adjusting relays after open the case, greatly improve the stability of the accuracy.

      2.Technique parameters

      1. AC current source (3*30A

      Single-phase current output (valid value)

      0--30A/phase, accuracy: 0.2% ±5mA

      Three-phase parallel output (valid value)

      0--90A/three identical phase parallel output

      Allowable working value of phase current for a long time (valid value)

      10A

      Maximum output power per phase

      300VA

      Maximum output power of three-phase parallel current

      800VA

      Maximum output of three-merging current allows working hours.

      5Small size

      Frequency range

      0--1000Hz, accuracy 0.001Hz

      Number of harmonics

      2--20 times

      Phase

      0--360°, Accuracy 0.1°

      2. DC current source

      DC current output

      0--±10A/phase, accuracy: 0.5% ±5mA

      3. AC voltage source

      Single-phase voltage output (effective value)

      0--120V/phase, accuracy: 0.2% ±5mV

      Line voltage output (valid value)

      0--240V

      Phase voltage/line voltage output power

      75VA/100VA

      Frequency range

      0--1000Hz, accuracy: 0.001Hz

      Number of harmonics

      2--20 times

      Phase

      0--360°Accuracy: 0.1°

      4. DC voltage source

      Single-phase voltage output amplitude

      0--±160V, accuracy: 0.2% ±5mV

      Line voltage output amplitude

      0--±320V

      Phase voltage/line voltage output power

      90VA/180VA

      5. Switching terminal

      Switching input terminals

      8 pairs

      Empty contacts

      1--20mA, 24V device internal active output

      Potential flipping

      Passive contact: low resistance short connection signal

      Active contact: 0-250V DC

      Switching output terminal

      4 pairs, empty contacts, blocking capacity: 110V/2A, 220V/1A

      6. Other

      Time frame

      1ms-9999s, measurement accuracy: 1ms

      Single unit volume weight

      Volume 328 x 168 x 250mm3, about 12.5Kg

      Power supply

      AC220V±10%, 50Hz, 10A

      7. AC current working hours

      10A≥Operating current

      Working time >60 minutes

      20A≥Operating current≥10A

      Working hours >70S

      30A≥Operating current≥20A

      Working hours >15S

      Operating current≥30A

      Working hours >5S

       

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