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Power Electronics Capacitors

Power Electronics Capacitors

Power Electronics Capacitors

Product catalog summary
Overview: The document provides technical specifications and guidelines for the use of metallized polypropylene AC and DC capacitors, specifically models KNI5048 and KNI5015, used in power electronics applications.
Applications: These capacitors are designed for use in inverters, filtering, and switching applications, where high current and harmonic distortion are present, and a long lifespan is expected.
Construction: The capacitors feature a dielectric made of polypropylene film, vacuum-deposited metal layers for electrodes, and a cylindrical aluminum case with a plastic self-extinguishing sealing cover. Terminals are available in tinned steel double tags or tinned brass screw-type bolts.
Features: Key features include AC/DC voltage compatibility, self-healing properties, high reliability, and an overpressure disconnector. The capacitors are designed to withstand a wide operating temperature range and have a life expectancy of over 30,000 hours at rated voltage.
Specifications: The capacitors have a rated capacitance range of 5µF to 500µF with a tolerance of ±5% or ±10%. They are tested at 1.6 times the rated AC voltage for 2 seconds and have a test voltage of 3kV between terminals and case.
Safety and Handling: The document emphasizes the importance of proper installation and handling to prevent mechanical damage, electrical hazards, and ensure the functionality of the overpressure disconnector. Capacitors should not be used if they are dented or damaged, and they must be stored in non-corrosive environments.
Cautions: Users are warned against electrical or mechanical misapplication, which can lead to personal injury or property damage. Proper grounding, regular maintenance, and adherence to IEC61071 specifications are crucial for safe operation.
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Catalog excerpts

Power Electronics Capacitors-1

Power Electronics Capacitors Metallized polypropylene AC and DC capacitors Energy sector

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Power Electronics Capacitors-2

Power Electronics Capacitors KNI5048, KNI5015 Applications Metallized polypropylene AC and DC capacitors are used for power electronics application with hight current and harmonics distortion with long expected life. źAC/DC voltage źSelf-healing properties źHigh reliabilty źCylindrical aluminium case with plastic źInverter źFiltering źSwitching źOverpressure disconector źDouble tags or screw type bolts self-extinguishing sealing cover Characteristics Rated capacitance Capacitance tolerance Rated AC voltage (Urms) Climatic category Operating temperature range (case) Dissipation factors Test voltage...

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Power Electronics Capacitors-3

Power Electronics Capacitors KNI5048, KNI5015 Reference standard IEC 61071 Standard values: for upper temperature 100 °C General characteristics TERMINATIONS Energy sector Power Electronics Capacitors_ver.1.1 6. september 2013 10:21:23

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Power Electronics Capacitors-4

Power Electronics Capacitors KNI5048, KNI5015 Dimensions C (µF) Use of power electronics capacitors Energy sector Power Electronics Capacitors_ver.1.1 6. september 2013 10:21:25

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Power Electronics Capacitors-5

Power Electronics Capacitors KNI5048, KNI5015 Cautions and warnings Attention: In case of dents of more than 1 mm depth or any other mechanical damage, capacitors must not be used at all. This applies also in cases of leakage. To ensure the full functionality of the overpressure disconnector, elastic elements must not behindered and a minimum space of 12 mm has to be kept above each capacitor. Check tightness of the connections/terminals periodically. The energy stored in capacitors may be lethal. To prevent any chance of shock, discharge and short-circuit the capacitor before handling. Failure...

 Open the catalog to page 5

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