Feedthrough capacitors used in substations designed and manufactured equipment in small batches. Serve with simple filters, coupling the high frequency power supply from the load. Have a relatively high maximum allowable voltage (800, 500 and 400). It should be noted that the variable component of the applied voltage for capacitors QFT, like other anadromous capacitors and filters, limited to the maximum allowed value of reactive power.
Exceeding this value may come from the thermal breakdown of the capacitor due to its heating caused by energy losses in the dielectric.
The condenser consists of a KTP ceramic tube coated with a inner and outer electrode, which is within the output, which connects the power source and load. To an external electrode is soldered threaded sleeve that serves as fixing element through which the interference discharged "on the ground."
The capacitance is determined by the dielectric constant ceramic tube thickness and area of overlap of the inner and outer electrodes. Starting with a certain frequency affects the inductance of the capacitor and the output passage into a LC-filter.
Parameters: Polarity: Any DC or AC. Capacity: 1 500 pF ± 10 %. Working voltage max.: 400 VDC. Working temperature: (- 60 - +85) oC. L with pins: 67 mm. Mass: 1 g. |
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Delivery time | |||||
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<3 weeks | 5 weeks | 7 weeks | 9 weeks | >9 weeks | |
Canada, United States | 5 % | 85 % | 7 % | 3 % | 0 % |
Africa, South America | 5 % | 20 % | 55 % | 20 % | 0 % |
Japan, South Korea | 10 % | 85 % | 5 % | 0 % | 0 % |
Taiwan, Thailand | 5 % | 45 % | 45 % | 5 % | 0 % |
China, India | 5 % | 40 % | 50 % | 5 % | 0 % |
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Israel | 5 % | 65 % | 30 % | 0 % | 0 % |
Australia | 5 % | 55 % | 35 % | 5 % | 0 % |
Russia | 5 % | 50 % | 40 % | 5 % | 0 % |
Europe | 60 % | 35 % | 5 % | 0 % | 0 % |
Others, not entered shall, countries | 5 % | 20 % | 55 % | 20 % | 0 % |
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