MZVLF VLF cable tester ultra low frequency voltage generator

Product performance, combined with advanced modern digital inverter technology, using computer control, boost, buck, measurement, protection is fully automated and automatic step-up process can be manual intervention. Since the all-electronic, so small size, light weight, large-screen LCD display, clear and intuitive, printer output test report. In full compliance with design specifications "electrical equipment for testing equipment General technical conditions, Part 4: Ultra-low frequency high voltage generator General technical conditions" power industry standard, easy to use. Now at home and abroad are using a mechanical approach to produce ultra-low frequency modulation and demodulation signal, there is no standard sine waveform measurement error is large, high-pressure part of a spark discharge, heavy equipment, and the sine wave of two, four-quadrant need High-power high-voltage discharge resistors shaping, so the larger the overall power consumption of the device. Purpose, ultra-low-frequency dielectric withstand test is actually an alternative frequency voltage withstand test. We know that at the time of the large generators, cables, and other test performed frequency voltage withstand test, because of their insulating layer exhibits a large capacity, it is necessary to test large-capacity transformer or resonant transformer. Such a huge number of devices, not only bulky, high cost, and very inconvenient. To solve this problem, the power sector with a reduced frequency of testing, thereby reducing the capacity of the test supply. From abroad for many years of theory and practice has proved that with 0.1Hz ultra-low frequency voltage test alternative frequency voltage withstand test, not only have the same equivalence, and the volume of the device is greatly reduced, greatly reduced weight, the theoretical capacity frequency of about one five-hundredth. Greatly simplify test procedures, and compared to the advantages of more power frequency test. That is why developed countries are using this method causes. Our Wuhan High Voltage Research Institute commissioned by the Ministry to draft a "35kV and below XLPE power cables VLF (0.1Hz) pressure test methods" industry standard. China is promoting this method, this instrument is based on our developed from this need. It can be widely used among the AC voltage test cables, large high-voltage rotating motors, power capacitors. Packaging, wooden service, 24-hour response 3-year warranty and lifetime maintenance of a rated output voltage: 30KV 2, the output frequency: 0.1Hz, 0.05Hz, 0.02Hz. 3, load capacity: 0.1 Hz maximum 1.1μF (theoretical value, live cable length 3 - 8 km) 0.05 Hz maximum 2.2μF (theoretical value, live cable length 3 - 8 km) 0.02 Hz maximum 5.5μF (theoretical value , field cable length is 3 - 8 km) 4, the measurement accuracy: ± (3% full scale + 0.5KV) 5, the voltage waveform distortion: ≤5% 6, conditions of use: indoor and outdoor; temperature: -10 ℃ ∽ + 40 ℃; Humidity: ≤85% RH 7, Power: AC 50 Hz, 220V ± 5% 8, the power fuse: 10A 9, Weight: Controller: 6kg, boost body: 30kg 10, Uses: used 10KV and the following cables, generators