Three-Phase AC-filter capacitors for harsh environments

The Faratronic C67 Three-phase AC-filter capacitor is designed for use in harsh environments. The capacitor is made of metallized polypropylene, is explosion-proof (ATEX), self-healing and has a overpressure tear-off fuse more safety. The C67 is used for AC filtering, LCL filtering and power factor correction in application like wind turbines or uninterruptible power supplies.

The capacitor should be installed in a cool and well-ventilated place. The capacitors’ working ambient temperature that we recommend is 55? (or lower). When the ambient temperature exceeds 55?, considering the ambient temperature rising, the active power of the capacitor should be gradually decreased. When it gets to the highest temperature (85?), the active power of the capacitor should be decreased to 0 Watt.

For discharging are discharge resistors required. Resistors are needed for human protection (risk of electric shock) and for re-switching capacitors in automatic PFC equipment (Phase opposition). Discharge resistors must be designed to discharge capacitors within 180 seconds to 75 V or lower.

Expected lifetime of the capacitor

For capacitor applications, various factors will affect the expected lifetime of capacitors, such as voltage, temperature, current, network harmonics, humidity, lighting or radiation and other unknown factors. Voltage and temperature are the most basic factors. Because of all the factors listed above, except voltage, other factors will eventually show the rise of internal temperature of capacitors. The following curves show the relationship between capacitor life and voltage, temperature, etc. For your reference.

?Note?U_W is the actual working voltage)                                     

Specifications

Download datasheet

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