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HMJBC-702 3 Phase Micro-Relay Protection Tester

It is the testing device used in professional field of microcomputer protection, relay protection, excitation measurement, fault recorde.

◆ High accuracy. With superior performance,advanced features
◆ Has a small tester compact and flexible, easy operation and high reliability.

Product Diecription

Relay protection microcomputer test device plays a key role in operating electricity power systems reliably and safely. It is the testing device used in professional field of microcomputer protection, relay protection, excitation measurement, fault recorde.

It comes with a large LCD display and flexible rotating mouse controller. If coupled with computer to run the powerful operating functions. Small size, high accuracy. With superior performance, advanced features, but also has a small tester compact and flexible, easy operation and high reliability.

Product Feature

1.The tester with standard 4-phase voltage and 3 phase current output that can carry out combination of various types of output protection testing easily. Each phase voltage can output to 120V and 3 phases in parallel can up to 120A. The fourth phase voltage Ux is multifunctional voltage that can be set to four kinds of 3U0 or synchronous voltage or other certain voltage output.

2.Stand-alone operation, by rotating the mouse to operate through the large-screen LCD. Can test a variety of relays and microcomputer protectors and simulate complex transient, permanent, conversion of failures to test. Boot to use, easy to operate

3.Dual operating mode, connect computer to run, through Windows operating software can complete large and complex calibration task with highly automatization, can easy to test and scan various of protection values, real-time storage test data, display vector graph, draw fault waveform, online print reports, etc.

4.Powerful software: can complete large and complex calibration task with highly automatization.

5.Many of switch contacts: relay tester is 8 contacts inputted and four pairs of idle contacts outputted. The input contact is idle contacts compatible with 0 ~ 250V potential contacts, that can be intelligent automatic identified. The contacts of input and output can be extended according to user requirement.

6.Large-screen LCD display: adopts 320 × 240 dot matrix large-screen high-resolution graphics LCD, all the operation process are set on the display screen, display clear and intuitive.

7.Self-protection: adopts reasonable radiator structure design, with a variety of reliable and comprehensive protective measures and power soft start, and certain self-diagnostic and interlock function.

8.With separate dedicated DC power output: dedicated adjustable 110V and 220V DC power output

9.Cost-effective: it’s belonging to the cross-disciplinary joint-design product, which integrated multi-disciplinary advanced scientific and technological achievements. With high performance price ratio.

Technical parameter

AC current output



Phase current output ( RMS )


3-phase in parallel current output (RMS)


Phase current values allowed to work a long time (RMS)


Phase current max output power


3-phase in parallel current max output power


3-phase in parallel current max output allowable working time


Frequency range ( fundamental wave)


Overtone order



DC current output



Current output

0±10A/phase, 0±30A/3 phase in parallel

Max Output load voltage



AC voltage output



Phase voltage output ( RMS )


Line voltage output ( RMS )


Phase voltage / line voltage output power


Frequency range ( fundamental wave)


Overtone order



DC voltage output



Phase voltage output amplitude


Line voltage output amplitude


Phase voltage / line voltage output power



Switching value and time measurement

Switching value input

8 loops

Idle contact: 120mA24V

Potential contact access"0"0 +6V"1"+11V+250V

Switching value output

4 pairs


Time measurement

Measurement range  0.1ms9999s

accuracy 0.1ms




1. Are you manufacture ?

Yeah, we are manufacturer professional in design and produce high voltage test equipment with nearly 20 years experience .


2. When can I get the price ?

We usually quote within 6 hours after get your inquiry . If you are very urgent to get price, please feel free to contact us by Wechat&Whatsapp +86-13720145441 or send us by email, so that we will regard your inquiry priority .


3. Do you supply OEM?

 Of course, we supply OEM.


4. What about leading time for production ?

Honestly , it depends on order quantity and the product . Usually lead time is within 7 working days after deposit .


5. What is your terms of delivery ?

We accept EXW, FOB, CFR, CIF, DDU, etc . You can choose the one which the most convenient and cost effective for you .


6. What’s your payment terms :

TT payment, L/C at sight, Paypal, Western union, etc.


7. How much is the shipping cost and time ?

This is depend on the size and weight of your product, and the method of shipping ( by sea/ by ari/ by Express) and your designated port . Kindly afford us above information to check shipping cost and time for you .


8. What’s the warranty period ?

Our warranty period is one year free and lifelong maintenance .

If produce damage within one year ( not man-made damage ), we will send you spare parts for replacement .  After one year, maintenance is paid service .

9. What kind of Certificate you can provide ?

We can provide CE mark, ISO9001 quality certificate the third part Calibration Certificate (CNAS), factory test report .


10. Do you have Technical Backup to all customers from different countries ?

Surely, we have rich experience engineer to afford professional technical support and quick response to your technical questions .

We are manufacture with rich on site testing experience and understand how to deal with your problems . And our engineer can visit your company to afford technical support face to face if necessary .


AC current output

Phase current output (effective value)     0~40A,      Output Precision  0.5degree

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)                                             20~1000Hz

Harmonic time                                                                          2~20

DC current output

Current output                                                    0~±10A / phase,  0~±30A / 3 parallel

Output Precision                                                                    0.5 degree

AC voltage output

Phase voltage output (effective value)           0~120V   Output Precision   0.5 degree

Line voltage output (effective value)                                0~240V

Phase voltage / Line phase output power                      80VA / 100VA

Frequency range (fundamental)                                     20~1000Hz

Harmonic time                                                                      1~20

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

Factory test and shippment

We will do factory test for every product before devilering, to ensure qualified of the product.

We will pack the product carefully and choose suitbale shippment for client,to ensure the safe arrival.

Installation and commissioning

we provide installation and commissioning assistance to get you up and running. Domestically within China or internationally, we will be there to support you. During the installation, integration and operation of a new test system, a variety of special services are involved. If it ’ s necessary, we can offer oversea commissioning service for our clients.

Service and support

In any fault case of our product, we will arrange engineer to deal with your problem within 24hours

Service guarantee

Contact purchase

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