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    3 Phase Relay Tester, Microcomputer Control

    5 out of 5 based on 2 reviews | Write a review
    Low price 3 phase relay tester kit for sale, microcomputer control, with big LCD display, high-resolution, high degree of automation, real-time storage of test data, reliable and comprehensive protection measures, powerful software.
    SKU: ATO-RT702A
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Cost-effective protection relay test set, standard 4-phase voltage 3-phase current output, large-screen LCD, complete interface, integrated single-chassis structure, rich contacts, input contact bit empty contact and 0~250V potential contact compatible, intelligent automatic identification.


    AC Current Output Model ATO-RT702A
    Phase 3 Phase
    Power Supply  220V 50Hz
    AC Current Output (Effective Value) 0~40A
    Output Precision 0.2 Degree
    3 Phase Parallel Current Output (Effective Value) 0~120A
    A Long-Time Phase Current 10A
    Maximum Output Power of Phase Current 450VA
    Maximum Output Power of 3 Parallel Current 900VA
    Maximum Permitted Work time of 3 Parallel Current 10S
    Frequency Range (Fundamental) 0~1000Hz
    DC Current Output Harmonic Time 0~20
    Current Output 0~±10A/Phase, 0~±30A/3 Parallel
    AC Voltage Output Output Precision 0.5 Degree
    Phase Voltage Output (Effective Value) 0~120V
    Output Precision 0.2 Degree
    Line Voltage Output (Effective Value) 0~240V
    Phase Voltage/Line Phase Output Power 80VA/100VA
    Frequency Range (Fundamental) 0~1000Hz
    Harmonic Time 0~20
    DC Voltage Output Phase Voltage Output Range 0~±160V
    Output Precision 0.5 Degree
    Line Voltage Output Range 0~±320V
    Phase Voltage/Line Phase Output Power 70VA/140VA
    10 Path Digital Input and 8 Path Digital Output Time Measuring Range 0.1ms~9999s, Accuracy of measurement 0.1ms
    Applications 3 Phase Protection Relay Testing
    Dimensions 370*570*740mm
    Weight 44kg


    1. Meet all requirements for field testing. The microcomputer controll relay tester can simultaneously output standard six-phase current and six-phase voltage, each phase current is 30A, and each phase voltage is 125V. A parallel six-phase current can achieve 180A current. The relay protection tester can not only test traditional relays and protection devices, but also test the protection of modern microcomputer-based protection devices, especially the transformers of the standby power supply and the automatic switching devices. Testing has become more convenient and perfect.
    2. A host with embedded high-performance IPC (Industrial Personal Computer) can run independently with its 300-600MHz clock speed, 128M memory, 6-12G hard disk and Windows XP operating system. The TFT true color display measures 8.4 inches and has a resolution of 800 x 600. Therefore, the overall operation of the main unit becomes convenient and durable.
    3. Three phase protection relay test set has a GPS synchronization test function with an embedded sync card (matching), which can access the PC through the RS232 interface, so it can be synchronized by switching two testers at different locations.
    4. The relay tester is equipped with independent special DC power, with auxiliary voltage source output, its output voltage is 110V (1A), 220V (0.6A), respectively, to meet the DC relay or protection device 5, the tester has software the automatic adjustment function can achieve the calibration accuracy without opening the cabinet adjustment potentiometer, which greatly improves the stability of the precision.
    Protection relay test set feature


    3 Phase Relay Tester Details

    Tips: Advantages of 3-phase relay tester

    1. Standard 4-phase voltage 3-phase current output, which can be easily combined for various types of protection tests. Each phase voltage can output 120V, current three and can output 120A.
    2. Double operation mode, connected to computer operation can carry out various large-scale complex and high-level verification work, which can easily test and scan various protection settings, store test data in real time, display vector graphics, draw fault waveforms, Print reports online, etc.
    3. The software is powerful, can complete a variety of high-complexity complex verification work, and has a variety of reliable and comprehensive protection measures and power soft start and certain fault self-diagnosis and blocking function.
    4. The switch contacts are rich, the input contact bit empty contact is compatible with 0~250V potential contact, which can be intelligently and automatically recognized. Input and output contacts can be expanded according to user needs.
    5. The main control board adopts DSF+FPGA structure 16-bit DAC output, which can generate high-density sine wave of 2000 points per week for the fundamental wave, which improves the quality of the waveform and improves the accuracy of the relay tester.

    Existing reviews of 3 Phase Relay Tester, Microcomputer Control
    Helped me a lot in my work
    The price of this 3 phase relay tester is very affordable. It with big LCD display, high-resolution and high degree of automation. This relay tester helped me a lot in my work. Highly recommended!!!
    From: Visonelet | Date: 16/11/2022
    Was this review helpful? Yes No (0/0)
    Intelligent 3 phase relay tester
    I have been looking for 3 phase relay tester that fits my heart, and finally found it in the online store. This 3 phase relay tester is very smart. It is controlled by a microcomputer and can be automatically identified. I am very fortunate to be able to buy this three-phase relay tester.
    From: Steven | Date: 25/02/2021
    Was this review helpful? Yes No (0/0)
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