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.
Product Characteristics:
1、Integrated Structure, Compact and Lightweight: The 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 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 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.
Technical parameters:
| 利用条件 | -10℃~40℃ | RH<80% |
| 干渉防止原理 | 周波数変換方式 | |
| 電源 | AC220V±10%(380V power supply is prohibited) | If powered by a generator, the generator power must be ≥ 3KW |
| 電力出力 | Maximum output voltage (single-phase) | Voltage: AC200V Current: 8A Accuracy: 0.5% |
| 出力周波数 | 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 | |
| 測定範囲 | Capacitance | 0.01~30μF |
| Impedance | 0.01~400Ω | |
| Impedance angle | -180°~+180° | |
| Induced voltage | 0-10kV | |
| Induced current | 0-30A | |
| 測定分解能 | Capacitance | 0.001μF |
| Impedance | 0.001Ω | |
| Impedance angle | 0.001° | |
| 測定精度 | Capacitance | ≥1μF when，±1% reading ±0.01μF |
| <1μF when，±2% reading ±0.01μF | ||
| 抵抗 | ≥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 | ||
| サイズ | 100 sets support USB data storage |
