Product Introduction
UHV-802 uses a high-performance industrial computer as the control computer, which can directly run the Windows operating system. The 6.4 "TFT true color LCD display, trackball, and optimized keyboard are configured on the panel of this tester and can be used without an external mouse and keyboard. The USB interface, 10-100M network card, and serial communication interface are located on the backplane of this tester, allowing for easy access to data, communication data, and software upgrades. The entire process and test results will be displayed on the LCD. The English operation interface of the entire equipment is very friendly and convenient. The trackball and keyboard on the panel will perform operations. Simple and convenient operation, easy to master. The operator only needs a little computer knowledge. The panel is also equipped with keyboard and mouse interfaces. Ifyou want to use an external mouse and keyboard, you can operate this tester like a desktop computer by inserting the corresponding interface.
Product Features
1、Flexible Output Combination
Standard 4-phase voltage and 3-phase current output, configurable for various protection tests. Each phase supports 120V voltage; three-phase current up to 120A. The fourth-phase Ux is a programmable voltage source for
3U0, synchronization check, or user-defined outputs.
2、User-Friendly Operation
Equipped with a trackball mouse, optimized keyboard, and large TFT LCD display. Runs on a built-in English Windows operating system—ready to use upon startup with intuitive controls.
3、Dual Operation Modes
Supports both standalone operation and external PC control, with identical functionality across both modes for versatile testing workflows.
4、High-Fidelity Linear Amplifier
Utilizes a modular linear amplifier (non-switching), ensuring clean, stable waveforms from high to low currents without medium/high-frequency interference.
5、High-Performance Host
DSP-controlled output for fast operation, strong real-time processing, wide frequency bandwidth, and high-resolution D/A conversion. Compact, lightweight, and portable design suitable for field testing.
6、Advanced Software Capabilities
Enables automated, complex calibration, including protection setting verification, fault replay, real-time data storage, vector diagram display, and report printing.
7、Independent DC Power Supply
Integrated adjustable DC power outputs: 110V and 220V for auxiliary testing needs.
8、Comprehensive Interfaces
Built-in keyboard and mouse for standalone use, plus external I/O support via USB and RS232 ports for computer and peripheral connectivity.
9、Complete Self-Protection Features
Optimized thermal design, hardware protection mechanisms, soft-start power function, and software-based fault diagnosis with output lockout.
10、Compact and Integrated Design
Highly integrated, lightweight single-unit structure utilizing advanced technology for excellent portability without compromising functionality.
 |  |
Mga Parameter ng Produkto
Kasalukuyang output ng AC
| Kasalukuyang output ng phase (epektibong halaga) | 0~40A |
| Katumpakan ng Output | 0.2 degree |
| 3 phase parallel current output (epektibong halaga) | 0~120A |
| Isang Long-time Phase kasalukuyang | 450VA |
| Maximum na output power ng 3 parallel current | 900VA |
| Pinakamataas na Pinahihintulutang oras ng trabaho na 3 parallel current | 10s |
| Saklaw ng dalas (pangunahing) | 0~1000Hz |
| Harmonic na oras | 0~20 |
DC kasalukuyang output
| Kasalukuyang output | 0～±10A / phase, 0～±30A / 3 parallel |
| Katumpakan ng Output | 0.5 degree |
| Maximum output load voltage | 20V |
Output ng boltahe ng AC
| Phase voltage output (epektibong halaga) | 0~120V |
| Katumpakan ng Output | 0.2 degree |
| Output ng boltahe ng linya (epektibong halaga) | 0~240V |
| Phase boltahe / Line phase output power | 80VA / 100VA |
| Saklaw ng dalas (pangunahing) | 0~1000Hz |
| Harmonic na oras | 0~20 |
Output ng boltahe ng DC
| Saklaw ng output ng boltahe ng phase | 0～±160V |
| Katumpakan ng Output | 0.5 degree |
| Saklaw ng output ng boltahe ng linya | 0～±320V |
| Phase boltahe / Line phase output power | 70VA / 140VA |
Switch quantity and time measurement
| tatlong yugto | note | |
| Switching input | 8 road | empty contact: 1 ~ 20mA, 24V |
| potential contact access："0"：0～ +6V； "1"：+11 V～ +250V | ||
| Switching output | 4 pair | DC：220V／0.2A；AC：220V／0.5A |
| Time measurement | measurement range is 0.1ms ~ 9999s | measurement accuracy is 0.1ms |
 |  |
Advantages
1. High precision testing:
The microcomputer relay protection tester adopts high-performance digital signal processing technology and high-precision analog-to-digital converter, which can generate more accurate test signals and measure the response of the tested relay protection device more accurately. This high precision ensures the accuracy and reliability of the test results.
2. Comprehensive functionality:
This tester has multiple testing functions and can simulate various power system faults (such as short circuit, overload, voltage loss, frequency deviation, etc.), test the protection characteristics of various relay protection devices (such as action time, action current, action voltage, etc.), and perform complex calibration work and fault playback. These functions enable the tester to comprehensively evaluate the performance of relay protection devices.
3. Efficient automatic testing:
The microcomputer relay protection tester can automatically complete the testing process and generate test reports, greatly improving testing efficiency. This reduces manual operation time and errors, making testing work faster and more accurate.
4. Convenient operation:
Testers are generally equipped with a human-machine interface, which can intuitively display test results and can be operated using a keyboard or mouse, making the operation more convenient. At the same time, the tester also has intelligent prompts and fault self checking functions, which help users quickly solve problems during operation.
5. Compact and lightweight:
Compared to traditional relay protection devices, the microcomputer relay protection tester adopts integrated circuit technology, which is smaller in size, lighter in weight, and easier to carry and use. This is particularly suitable for on-site testing and flow testing, improving the flexibility and convenience of testing.
6. Easy to maintain:
The software of the tester can be upgraded, and the testing functions can be updated according to the development of the relay protection device, making maintenance more convenient. At the same time, the tester also has comprehensive fault diagnosis and repair functions, which help users quickly solve equipment failures.
7. High reliability and stability:
Adopting stricter production and quality control standards, it has higher anti-interference and stability, and can operate stably in harsh environments, ensuring the accuracy of test results.
Application Scenarios
Equipment debugging
During the debugging process of power equipment, relay protection testers can be used to test the performance indicators and functional integrity of the equipment. By simulating the normal and abnormal operating states of the power system, the tester can detect potential problems with the equipment, repair them in a timely manner, and ensure that the equipment meets the specified technical standards before being put into operation.
Maintenance
The maintenance and upkeep of electrical equipment is a crucial step in ensuring the stable operation of the power system. Relay protection tester can be used to evaluate the operating status of equipment, detect potential faults or performance degradation, and take preventive measures in a timely manner. In addition, the relay protection tester can also be used to calibrate equipment parameters, ensuring the accuracy and reliability of the equipment.
Troubleshooting
When power equipment malfunctions, the relay protection tester can provide accurate fault analysis and location, helping maintenance personnel quickly find the cause of the fault. By simulating normal and abnormal operating states, the tester can detect the fault points of the equipment, provide strong technical support for maintenance work, shorten the time for fault repair, and reduce the impact on the power system.
Frequently Asked Questions
Q1: What is the difference between microcomputer relay protection tester and traditional relay protection tester?
A1: The microcomputer relay protection tester adopts microprocessor technology, which is more powerful, intelligent, easy to operate, and greatly improves the testing accuracy.
Q2: Why is it necessary to regularly test relay protection devices?
A2: The relay protection device is the "safety valve" of the power system. Long term operation may cause aging, parameter drift and other problems. Regular testing can timely detect and eliminate hidden dangers, prevent misoperation or refusal to operate.
Q3: What is the most common challenge encountered during relay protection testing?
A3: Common challenges include on-site environmental interference, diverse types of tested devices, and simulation of complex fault scenarios, which require testers to have professional knowledge and rich experience.
Q4: Which types of relay protection devices require the most testing with a microcomputer relay protection tester?
A4: Almost all types of microcomputer and intelligent relay protection devices require testing with microcomputer relay protection testers, including line protection, transformer protection, generator protection, motor protection, busbar protection, etc.
Q5: In which scenarios is the relay protection microcomputer tester mainly used?
A5: Mainly used in power substations, power plants, factories and mining enterprises, etc., for factory acceptance, on-site verification, fault analysis, etc. of various microcomputer relay protection devices.
Q6: Why is it said that the "relay protection microcomputer tester" is a "guardian"?
A6: It can simulate various fault conditions and detect whether the protective device can timely and accurately cut off the faulty line when a fault occurs, thereby protecting the safety of the power grid and equipment, just like a guardian.
