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Power Capacitors

Wed, 07/30/2003 - 9:19am

A series of heavy-duty, metallized-film power capacitors with current ratings as high as 150 A and low self-inductance is introduced by Vishay Intertechnology, Inc. The ESTA HDMKP series devices serve as low-cost capacitor solutions for DC and AC filtering and for DC linking in uninterruptible power supplies and in power converters for traction and industrial drives. Inductance for the capacitor series is less than 50 nH, and the devices' dissipation factor is less than 8 × 10– 4 at a frequency of 1 kHz. An advanced metallized film on the capacitors' polypropylene dielectric enables the devices to offer a high RMS current rating, while series resistance of less than 5 m( allows them to reduce ohmic losses. HDMKP capacitors are available in six standard voltages from 900 V to 2700 V (DC) and from 220 V to 660 V (AC), with voltages up to 4800 V (DC) available on request. Capacitance values range from 40°F to 1100°F, with a capacitance tolerance of (5%.

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