LPT1501 Power frequency parameters of transmission lines tester
Power-frequency parameters of long-distance EHV and UHV transmission lines are fundamental to power system modeling and analysis, yet accurate measurement of these parameters is challenging due to reactance-dominated line characteristics and severe external interference.
The HANY LPT15 Series Transmission Line Parameter Analyzer adopts innovative variable frequency technology to solve this problem. It is professionally designed to measure power-frequency parameters of overhead lines and cables, and supports line phase verification and DC resistance measurement.
Featuring an all-electronic non-power-frequency transformer integrated design, the device is smaller, lighter and more portable than traditional inverter and frequency transformer products on the market. Its exclusive absorption feedback circuit enables it to withstand induced current of 10–100 A without additional anti-interference suppression equipment.
The unique three-phase parallel output mode triples the induced current tolerance for zero-sequence impedance measurement compared with single-phase output devices. Adopting variable frequency test principles, combined with advanced hardware filtering, digital filtering and Fourier transform technologies, the analyzer delivers high-precision measurement results.
Integrating modern power electronics and signal processing technologies, the LPT15 series is a high-performance integrated tester for transmission line frequency parameters.
1. Using variable method is used to accurately measure positive sequence short circuit impedance, positive sequence open circuit impedance (positive sequence capacitor), zero sequence short circuit impedance, zero sequence open circuit impedance (zero sequence capacitor), coupling inductor (mutual inductor), coupling capacitor, induction current.
2. Using DC power method to check line phases.
3. Measuring line DC resistance and convert the resistance refer to the temperature.
4. Measuring induction voltage. A voltage divider is needed when the induced voltage beyond 750V.
5. Built-in bluetooth, operate the analyzer via bluetooth by using mobile-phone or pad, improve safely. (Option)
6. The analyzer adopts all-in-one design of the all-electronic non-working frequency transformer, which has the advantages of small size, light weight and convenient carrying.
7. One time connectting can complete checking phase, measuring DC resistance and line parameters work. Improve work efficiency. Avoid dangers due to changing connectting.
8. A combination of hardware and software anti-jamming measures, anti-frequency interference capacity up to 1000 times.
9. Zero sequence impedance measurement uses a three-phase parallel output mode, which stand induction current ability three times than single-phase output mode.
10.No need extra anti-jamming suppression device, the analyzer can san stand 10A to 100A induction current.(Different model)
11. Perform boosting voltage, measuring, lowdown voltage and calculatting automatically.Save testing time.
12. Saving current and voltage curve, analysis result on computer.
13. The built-in large-capacity memory holds 1024 sets of data and loses power without losing data.
14. Use USB drive to transfer test data and software upgrades.
15. The operating interface and test data are displayed on the LCD screen, which can be clearly displayed both indoors and outdoors.
16. High-speed thermal printers print test data.
17. Has input power overvoltage (＞270V AC) protection.
18. Has the ungrounded prompt function of the instrument.
1. Power supply: single phase AC198～264V，47～63Hz，5kVA
2. Output voltage：three phase，0～200V（RMS）
3. Output current：three phase，0～10A（RMS）
4. Test frequence：42～58Hz
5. Measuring range of capacitance：0.1～30μF ，resolution：0.01μF，
Accuracy：0.1～1μF ±(3%C+0.01μF)；1～50μF ±(1%C+0.01μF)
6. Measuring range of resistance：0.5～400Ω，resolution：0.01Ω
Accuracy：0.5～1Ω ±(3%Z+0.01Ω)；1～400Ω ±(1%Z+0.01Ω)
7. Measuring range of impedance angle：0～360°，resolution：0.01°
Accuracy：±0.3°
8. DC resistance measurement range：0.02～60Ω，resolution：0.1mΩ
Accuracy：±(0.2%R+0.2 mΩ), （The equipment will output current 2A to 4A according to the resistance
9. Voltage measurement range：10～750V, accuracy：±(0.5%U+0.2V)
10. Current measurement range:0.5～20A, accuracy：±(0.5%I+0.02A)
11. Standing induction voltage：﹤30KV
12. Standing induction current: each phase 10A，zero sequence 30A
13. Dimension：492×395×216mm
14. Weight：16.9kg
15. Enviroment：T:-20～50°；H≤90%RH
