Product Introduction:
The Transmission Line Parameter Test System features an integrated structure with a built-in variable frequency power module, providing adjustable output power through variable frequency voltage regulation. The frequency can be switched between 45Hz and 55Hz. By employing digital filtering technology, the system effectively avoids interference from power frequency electric fields during testing, fundamentally solving the challenge of accurate measurement under strong electric field interference. Additionally, it is suitable for power supply detection scenarios using a generator after complete power failure.
As power grids continue to develop and line corridor land resources become increasingly scarce, the construction of shared towers has become more prevalent. Consequently, coupling between transmission lines has grown progressively tighter, resulting in stronger interference during power frequency parameter testing. This interference seriously affects both test accuracy and equipment safety.
To address these challenges, our company has developed a new generation of transmission line variable frequency parameter test system. This advanced system integrates a variable frequency test power supply, precision measurement modules, high-speed digital processing chips, and a unique national patent technology for induced voltage circuit resistance. It effectively eliminates the impact of strong interference, ensures the safety of instruments and equipment, and enables convenient, rapid, and accurate measurement of transmission line power frequency parameters.
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Product functions:
1. Supports test data storage, query, and USB export, and is equipped with safety protection features such as grounding detection, facilitating on-site testing and data management.
2. Comprehensive Parameter Measurement: It measures capacitance (0.01–30μF), impedance (0.01–400Ω), impedance angle (-180° to +180°), induced voltage (0–10kV), and induced current (0–30A).
3. Variable Frequency Anti-Interference: It uses variable frequency technology with selectable output frequencies (45Hz/55Hz, 47.5Hz/52.5Hz, etc.) and digital filtering to avoid power frequency electric field interference, fundamentally solving the problem of accurate measurement under strong electric field interference.
4. Super Anti-Induction Voltage Capacity: It uses a unique patented technology (Patent No.: 201020687669.X) to withstand induced voltage and current, ensuring normal operation under high induced voltage (up to 10,000 volts) and induced current (up to 40A).
5. Integrated Structure: The transmission line parameter test system is highly integrated, housing equipment that traditionally required nearly a truckload into a single host box, making it the smallest and lightest in its class.
6. Simple Power Access: The entire measurement process requires only a standard 220V mains connection, eliminating the inconvenience of 380V power access.
7. Data Management: It features a calendar chip and mass memory for chronological storage of test results, a USB interface for data export to PC for viewing and report generation, and 100 sets of USB data storage support.
Safety Protection: It includes a grounding detection function that automatically judges whether the instrument is well grounded and prohibits operation if the grounding is faulty, ensuring personal safety and protecting the instrument.
Product Characteristics:
1、Integrated Structure, Compact and Lightweight: The transmission line parameter test system features a highly integrated design, consolidating equipment that would traditionally require nearly a truckload into a single integrated host case. It is the smallest and lightest product among its peers in the domestic market, providing a simple and convenient testing solution for field applications.
2、Easy Power Access: The entire measurement process requires only a standard 220V mains power connection, eliminating the inconvenience of accessing 380V power supplies required by conventional measurement methods.
3、Superior Induced Voltage Withstand Capability: Utilizing unique patented technology (Patent No.: 201020687669.X), the system can withstand high induced voltages up to 10,000 volts while maintaining normal operation, with induced current withstand capacity reaching 40A.
4、Variable Frequency Technology for Accurate Measurement: With strong anti-interference capability, the built-in variable frequency power module provides measurement output power at switchable frequencies of 45Hz and 55Hz. Digital filtering technology effectively avoids various power frequency interference signals on site, enabling high-precision, accurate, and reliable measurements.
5、High-Speed Processor for Rapid Results: The transmission line parameter test system employs a professional fast digital signal processor as its processing core, significantly enhancing computing and processing capacity while ensuring measurement data accuracy.
6、Simple Operation: Wiring is straightforward—positive sequence impedance, zero sequence impedance, positive sequence capacitance, and zero sequence capacitance can all be measured by simply connecting the test leads to the circuit under test. This eliminates the cumbersome wiring changes, inversion issues, and concerns about interference, stability, and accuracy found in existing test methods. It also avoids potential harm to experimental personnel from wiring changes in the presence of induced voltage.
7、Mass Data Storage: Equipped with a real-time clock chip and mass storage, the system can save test results chronologically. Historical records can be viewed and printed as needed.
8、Scientific and Advanced Data Management: Test data can be exported via USB drive and viewed or managed on any PC, allowing users to generate work reports conveniently.
9、Operational Safety Protection: A specially designed grounding detection function assesses whether the system is properly grounded on site. If grounding is incorrect or missing, the system automatically detects this and prohibits operation, ensuring personnel safety and protecting the instrument.
10、Full-Touch LCD Display for Intuitive Operation: The transmission line parameter test system features a high-end full-touch LCD screen with a large, clear display interface. All operating steps are presented in an intuitive Chinese menu. The entire measurement process can be completed with simple touches, making it an ideal intelligent measurement device.
Advantages of the Transmission Line Parameter Tester
1. Superior Anti-Interference: The variable frequency technology and unique patented anti-induction voltage circuit effectively eliminate strong interference, ensuring accurate and reliable measurement even under high induced voltage and current conditions.
2. Unmatched Portability: The highly integrated design consolidates what traditionally required a truckload of equipment into a compact, lightweight host box, making it the smallest and lightest product in its class and ideal for field use.
3. Simple and Safe Operation: The single 220V power connection, simple wiring (only one access circuit to the test end down lead for all parameters), and automatic grounding detection simplify the testing process and enhance operator safety.
4. High Precision and Speed: The professional fast digital signal processor and digital filtering technology ensure high measurement accuracy and fast processing speed.
5. Comprehensive Data Management: The calendar chip, mass memory, and USB export capability provide convenient documentation, traceability, and report generation.
6. User-Friendly Interface: The full-touch super LCD screen with a clear Chinese menu makes operation intuitive and efficient.
Технические параметры:
| Условия использования | -10℃~40℃ | RH<80% |
| Принцип защиты от помех | метод преобразования частоты | |
| Источник питания | AC220V±10%(380V power supply is prohibited) | If powered by a generator, the generator power must be ≥ 3KW |
| Выходная мощность | Maximum output voltage (single-phase) | Voltage: AC200V Current: 8A Accuracy: 0.5% |
| Выходная частота | 50Hz, 60Hz off peak output | |
| 47.5Hz\52.5Hz 45.0Hz\55.0Hz | ||
| 57.5Hz\62.5Hz 55.0Hz\65.0Hz | ||
| Power (three-phase) | 5KVA | |
| Диапазон измерения | Capacitance | 0.01~30μF |
| Impedance | 0.01~400Ω | |
| Impedance angle | -180°~+180° | |
| Induced voltage | 0-10kV | |
| Induced current | 0-30A | |
| Разрешение измерения | Capacitance | 0.001μF |
| Impedance | 0,001 Ом | |
| Impedance angle | 0.001° | |
| Точность измерения | Capacitance | ≥1μF when，±1% reading ±0.01μF |
| <1μF when，±2% reading ±0.01μF | ||
| Сопротивление | ≥1Ω when，±1% reading ±0.01Ω | |
| ＜1Ω when，±2% reading ±0.01Ω | ||
| Impedance angle | ±0.2°(voltage>1.0V) | |
| ±0.3°(voltage:0.2V~1.0V) | ||
| Anti induced current | Ia+Ib+Ic<30A Accuracy:2% | |
| Anti induced voltage | Ua<10kV;Ub<10kV;Uc<10kV;Accuracy:2% | |
| Dimensions & Weight | (Main chassis) Size mm: 550 * 430 * 530 Weight: 70Kg | |
| (Attachment Box) Size mm: 470 * 340 * 170 Weight: 10Kg | ||
| Размер | 100 sets support USB data storage |
Application Scenarios
1. Transmission Line Parameter Testing: Used for field measurement of positive sequence impedance, zero sequence impedance, positive sequence capacitance, and zero sequence capacitance of high-voltage transmission lines.
2. Power Grid Commissioning: Essential for verifying line parameters during the commissioning of new transmission lines or after major grid modifications.
3. Routine Maintenance and Preventive Testing: Used by utilities for periodic testing to ensure line parameters remain within specified limits and to detect any changes due to environmental or operational factors.
4. Strong Interference Environments: Specifically designed for use in areas with strong electric field interference, such as shared tower corridors and areas with close line coupling.
5. Post-Fault Analysis: Used after system faults to assess whether line parameters have changed and to verify the accuracy of protection settings.
6. Generator Power Supply Detection: Applicable for power supply detection using a generator after complete power failure.
FAQ about Transmission Cable Parameter Tester
Q: Can the device handle induced voltage and power frequency interference on the line?
A: Yes. The transmission line parameter test system is designed to handle induced voltage, induced current, and power frequency interference commonly found at high-voltage line sites. It employs frequency conversion testing and digital filtering technology to improve test stability and accuracy.
Q: Is the device suitable for lines with strong interference?
A: Yes. The transmission line parameter test system manufacturer uses frequency conversion testing and digital filtering technology to reduce the impact of power frequency interference on measurement results. It is particularly suitable for complex testing environments such as parallel lines and multi-circuit lines on the same tower.
Q: What core parameters can the device measure?
A: It mainly measures positive sequence impedance, zero sequence impedance, positive sequence capacitance, and zero sequence capacitance, while also providing related test data such as impedance angle.
Q: Why choose our company's Transmission Line Parameter Tester?
A:We have our own factory with over 20 years of production experience. The transmission line parameter test system integrates functions including positive/zero sequence impedance testing, positive/zero sequence capacitance testing, anti-interference capability, and data management, meeting the on-site testing requirements of various transmission lines. At the same time, the device is optimized for complex electromagnetic environments and features convenient operation, comprehensive functionality, and strong field adaptability, providing customers with reliable line parameter testing solutions.
As a professional manufacturer and supplier of high-voltage power testing equipment in China,Wuhan UHV Power Technology Co., Ltd. offers flexible solutions based on different testing applications. Whether you are working with a power utility, electrical engineering company, testing service provider, or industrial maintenance team, our technical specialists can help you select a suitable configuration for your project. Before placing an order, you can send us information about your testing object, voltage level, required functions, and destination. Based on these details, we can provide a detailed price quotation, product configuration, technical specifications, and delivery information. With professional manufacturing experience in high-voltage electrical testing equipment, we are committed to providing reliable products and responsive technical support throughout the purchasing and application process. Contact us now to request the UHV-525 Transmission Cable Parameter Tester price and receive a customized quotation for your testing project.
