SHANGHAI JIU ZHI ELECTRIC CO LTD

YL series high-voltage standard capacitors are a high-stability SF6 insulation standard capacitors, voltage range of 10kV-1800kV, widely used in high-voltage and UHV laboratories, with bridge or media loss tester use, can accurately measure the tested material capacity, media loss, power factor, voltage, frequency and other parameters, is the cable, casing, transformer, capacitor and other capacitive test subjects to make accurate insulation evaluation. In combination with high-precision current transformers, it is also possible to measure low-power factor inductor values, losses and other parameters. The YL series of high-voltage standard capacitors can also be used as a high-voltage part of the capacitive voltage divider, its good temperature coefficient and voltage coefficient to ensure ultra-high accuracy of voltage measurement, with the amplifier low-voltage arm, can be used for the verification of voltage transformers, can also be used for the transformer high-voltage output side of accurate voltage measurement. Each high-voltage standard capacitor higher than 800kV has three independent parallel capacitors. The C1 (30pF) standard capacitors and the C2 (20pF) and QND standard voltage dividers, respectively, also provide an additional C3 (500-1000pF) coupled capacitor for local discharge measurements. Three capacitors can work independently and interfere with each other. It can replace the coupling capacitors in traditional high-voltage test systems, connect with test transformers or series resonances, and use them for a long time, greatly reducing the efficiency in laboratory space.