Введение в продукт
The UHV-1200 Microcomputer Relay Protection Tester features a highly flexible combination of voltage and current outputs, supporting up to 6-phase voltage and 6-phase current channels. It allows users to configure various
output modes, such as the conventional 4-phase voltage and 3-phase current setup, 6-phase voltage output, or combined 6-phase and 12-phase output modes. This design ensures compatibility with traditional testing
methods and also facilitates advanced applications such as differential testing of three-phase transformers, fast bus transfer tests, and backup auto-reclosing verification.
The high-performance main unit employs DSP control in its output section, providing fast processing speeds, strong real-time digital signal processing capabilities, wide transmission bandwidth, and high-resolution D/A
conversion. This ensures high waveform precision, minimal distortion, and excellent linearity in output signals.
Through the application of advanced technologies, precision components, and materials—along with a professional structural design—the device achieves a compact and lightweight form factor without compromising
functionality. It is fully portable, easy to set up, and convenient for on-site or mobile testing applications.
Особенности продукта
1、Flexible Output Configuration
Supports up to 6-phase voltage and 6-phase current outputs, configurable in various modes for compatibility with conventional testing, differential protection, and advanced grid simulations.
2、High-Fidelity Power Amplifier
Utilizes modular linear power amplifiers to ensure clean, stable waveforms without medium/high-frequency interference.
3、High-Performance DSP Control
DSP-based output with fast processing, high-resolution D/A conversion, and excellent waveform accuracy.
4、Compact and Portable Design
Lightweight, integrated structure with full functionality for easy transport and field testing.
5、Comprehensive Software Suite
Enables automated testing, fault simulation, data storage, vector display, and report generation.
6、Independent DC Power Output
Includes 110V/220V adjustable DC power supply for auxiliary testing.
7、Extensive Connectivity
Features USB and other communication interfaces for PC connection and external device integration.
8、Built-in Protection Mechanisms
Incorporates thermal management, soft-start, fault diagnostics, and output lockout for safe operation.
9、Laptop-Compatible Operation
Can be operated with an external laptop using the same intuitive software interface.
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Параметры продукта
Argument
| Текущий номер канала | Standard 6 phase |
| Номер канала напряжения | Standard 6 phase |
| Ac current output range | 30A/phase or 180A (six parallel) |
| Dc current output range | 10A DC/phase |
| Ac voltage output range | 120V AC/phase |
| Dc voltage output range | 160V DC/phase |
Выход переменного тока
| 6 phase current output per phase(effective value) | 0~30A output precision 0.2 |
| 3 phase current output per phase(effective value) | 0~60A |
| 6 phase parallel current output(RMS) | 0~180A |
| Phase current long-term allowable working value(RMS) | 10А |
| Maximum output power of phase current | 450ВА |
| T6 phase parallel current maximum output power | 1000ВА |
| 6 Allowable working time for maximum output of phase parallel current | 10 с |
| Frequency range(fundamental) | 0~1000Гц |
| Harmonic frequency | 0 to 20 times |
Выход постоянного тока
| Текущий выход | 0~±10A/phase output accuracy 0.5 level |
| Maximum output load voltage | 20 В |
Выход переменного напряжения
| Phase voltage output(RMS) | 0~120V output precision 0.2 |
| Line voltage output(RMS) | 0~240В |
| Phase voltage/line voltage output work | 80VA/100VA |
| Диапазон частот (основной) | 0~1000Гц |
| Harmonic frequency | 0 to 20 times |
Выходное напряжение постоянного тока
| Phase voltage output amplitude | 0~±160V output accuracy 0.5 |
| Line voltage output amplitude | 0~±320V |
| Phase voltage/line voltage output power | 70VA/140VA |
Switching value
| 8 switch inputs | Null contact 1~20mA, 24V |
| 0 Potential contact access "0" : 0~+6V; 1: +11V to +250V | |
| 4 pairs of switching output | DC:220V/0.2A; AC:220V/0.5A |
Диапазон измерения времени
| Диапазон измерения времени | 0.1ms~9999s |
| Точность измерения | 0<0.1mS |
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Core functionality
1. Multi channel analog output: capable of outputting AC, DC current, voltage, and phase signals, simulating various power system operating states and typical fault situations, such as overcurrent, undervoltage, differential, and distance protection.
2. Action time measurement: Accurately record the time from receiving the signal to completing the action of the relay protection device, ensuring that it meets the standard requirements, thereby ensuring rapid fault removal.
3. Action value verification: It can test whether the action current and voltage values set by the protection device are consistent with the actual action values, and verify the accuracy and sensitivity of the device.
4. Logic function testing: supports simulation and verification of complex protection logic, such as multi-stage overcurrent protection, linkage tripping, and automatic reclosing logic, to ensure that the protection strategy is effective in actual operation.
5. Data recording and analysis: Modern testers usually have data storage and intelligent analysis functions, which can generate test reports for historical data comparison, trend analysis, and operation and maintenance management.
Application scenarios:
1. Acceptance of newly put into operation device: After the installation of the protective device, comprehensively test its action values, time limits, and logical functions to ensure compliance with the requirements of the fixed value sheet.
2. Regular inspection: Regularly verify the protection (such as differential, distance, overcurrent protection) during operation according to regulations to ensure its reliability.
3. Post fault analysis: After a system malfunction, simulate the fault quantity to test the protective action behavior and determine whether there is refusal, misoperation, or characteristic drift.
4. Protection system transmission test: Apply simulated fault current and voltage to verify the correctness of the entire circuit from relay sensing fault to circuit breaker tripping.
Product Frequently Asked Questions
1. What protection devices can the relay protection tester test? It covers almost all common types of protection, including line protection, transformer protection, busbar protection, generator protection, motor protection, differential protection, distance protection, overcurrent protection, and low cycle load shedding devices.
2. Why doesn't the protective device work? In most cases, it is related to wiring errors, incorrect setting of settings, improper selection of test items, or abnormal wiring of input and output circuits.
3. How to deal with the inability to output test voltage? Firstly, confirm the software parameter settings. Secondly, check the fuse, output switch, and voltage circuit wiring.
4. Does the relay protection tester need to be grounded? The answer is that it must be grounded. Good grounding is not only related to the accuracy of test results, but also to the safety of test personnel.
5. Why does the repetition of action time decrease? Common causes include fluctuations in auxiliary power supply, poor contact of contacts, internal faults in protective devices, and environmental electromagnetic interference.
6. What are the most common problems during distance protection testing? Impedance calculation errors and polarity reversal are the two most common problems on site.
7. How to choose between six phase equipment and three-phase equipment? For units with more tests on line protection, transformer protection, and differential protection, six phase equipment can significantly improve work efficiency.
8. How to choose a reliable manufacturer of relay protection tester? Attention should be paid to product accuracy, software functionality, after-sales service, and manufacturer's technical strength. For example, Wuhan UHV Power Technology Co., Ltd.
