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Secondary injection test system UHV-803performancethermalfor electrical networks
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Characteristics
- Test type
- performance, thermal
- Domain
- for electrical networks, for power transformers
- Applications
- for transformers, for substations, three-phase relay
- Configuration
- compact, modular, portable, on site
- Other characteristics
- precision, high-power, calibration, multichannel, high-current, secondary injection
Description
Product Overview
Product Parameters
Key features
Regular maintenance
- The UHV-803 Relay Protection Device Tester is a new-generation miniaturized microcomputer relay protection tester developed in accordance with the DL/T624-1997 Technical Conditions for Microcomputer Relay Protection Test Devices issued by the Ministry of Electric Power. It has been designed by extensively incorporating user feedback and summarizing the advantages and disadvantages of similar domestic products, while fully leveraging modern advanced microelectronics technology and components.
- The tester features an advanced architecture that supports standalone operation and can also be connected to a laptop computer. The main unit adopts a DSP + FPGA structure with true 16-bit DAC output, and incorporates a built-in new modular high-fidelity linear high-power amplifier. It is equipped with an 8.4-inch TFT true-color LCD display (800×600 resolution), along with an industrial-grade keyboard and mouse. The system runs on the Windows XP operating system, offering powerful functionality.
- With its compact size and high accuracy, the instrument combines the superior performance and advanced features of large-scale testers with the advantages of a compact, flexible design, ease of operation, high reliability, and exceptional cost-effectiveness. It is an ideal tool for protection commissioning and maintenance professionals.
Product Parameters
- AC current output
- Output Precision: 0.2 degree
- Phase current output (effective value): 0~40A
- 3 phase parallel current output (effective value): 0~120A
- Phase current long-term allowable working value (effective value): 10A
- Maximum output power of phase current: 420VA
- Maximum output power of 3 parallel current: 900VA
- Maximum Permitted work time of 3 parallel current: 10s
- Frequency range (fundamental): 0~1000Hz
- Harmonic time: 1~20
- DC current output
- Output Precision: 0.5 degree
- Output current: 0±10A/phase, 0±30A/3 parallel
- Maximum output load voltage: 20V
- AC voltage output
- Output Precision: 0.2 degree
- Phase voltage output (effective value): 0~120V
- Line voltage output (effective value): 0~240V
- Phase voltage / Line phase output power: 80VA/100VA
- Frequency range (fundamental): 1~1000Hz
- Harmonic time: 1~20
- DC voltage output
- Output Precision: 0.2 degree
- Phase voltage output range: 0±160V
- Line voltage output range: 0±320V
- Phase voltage / Line phase output power: 70VA/140V
- Volumetric weight
- Overall dimension: 375×305×140mm³
- Single weight: 13kg
- Power supply: AC 220V±10%, 50/60Hz
- Ambient temperature: -10℃~+50℃z
Key features
- Flexible Voltage and Current Output: Supports up to 4-phase voltage and 3-phase current output, configurable in conventional 4-phase voltage and 3-phase current modes. This ensures compatibility with traditional testing methods while facilitating specialized tests such as three-phase transformer differential testing and fast bus transfer / automatic transfer tests for auxiliary power systems.
- Operation Mode: The device connects directly to an external laptop or desktop computer for operation, offering convenience, speed, and stable performance.
- High-Fidelity Linear Power Amplifier: The output consistently utilizes high-fidelity, high-reliability modular linear power amplifiers rather than switching power amplifiers, delivering excellent performance. This design eliminates high- and medium-frequency interference to the test site and ensures smooth waveforms across the entire current range, from large to small values.
- High-Performance Host Platform: The output section is controlled by a DSP, offering fast operation, strong real-time digital signal processing capability, wide transmission bandwidth, and high-resolution D/A conversion. This results in high output waveform precision, low distortion, and excellent linearity. The device incorporates advanced technologies, precision components, and high-quality materials, with a professional structural design that ensures compact size, light weight, full functionality, and easy portability. Ready for immediate use, it is highly convenient for on-site testing.
- Powerful Software Capabilities: The software supports a wide range of large-scale, highly automated calibration tasks. It enables easy testing and scanning of various protection settings, fault playback, real-time test data storage, vector diagram display, online report printing, and more, facilitating three-phase differential protection testing.
- Independent Dedicated DC Power Output: The device includes a dedicated DC power output, providing both 110V and 220V outputs as standard.
- Comprehensive Interfaces: Equipped with a USB communication port for seamless connection to computers and other external devices.
- Comprehensive Self-Protection Features: The device incorporates a well-designed heat dissipation structure, reliable and comprehensive hardware protection measures, and power soft-start functionality. Software-based fault self-diagnosis and output lock features further enhance operational safety.
Regular maintenance
- Internal cleaning: Regularly clean the relay protection tester to remove dust, debris, etc. Firstly, power off the instrument, then remove the casing and use a vacuum cleaner or cleaning brush to clean the internal components. Be careful not to touch sensitive components to avoid affecting instrument performance.
- Check cables: Regularly inspect the cables of the relay protection tester to ensure that they are free from damage, deformation, and other issues. The cable should be kept in a relaxed and tension-free state to avoid long-term bending that may cause cable aging.
- Calibration: Regularly calibrate the relay protection tester based on usage frequency and environmental conditions. Calibration ensures the accuracy and stability of the instrument, which helps to extend its lifespan.
- Check mechanical components: For relay protection testers with mechanical components, the movement range, flexibility, and lubrication condition of the mechanical parts should be regularly checked. If mechanical components are found to be severely corroded or worn, they should be repaired or replaced in a timely manner.
- Check sensors: If the relay protection tester is equipped with sensors, the performance of the sensors should be checked regularly. If the sensor signal is found to be unstable or abnormal, the connection of the sensor and surrounding environmental factors such as temperature, humidity, etc. should be checked to see if they meet the requirements.
- Replace vulnerable parts: For vulnerable components such as light bulbs, filters, etc., they should be replaced regularly. When replacing, original parts should be selected to ensure that the quality and performance of the new parts meet the requirements.
- Keep good records: After each maintenance of the relay protection tester, detailed records should be kept of the maintenance content, time, personnel, and other information. This helps track the maintenance history of the equipment, identify and resolve issues in a timely manner.
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Relay Protection Tester
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