HKFC Power Electronic Capacitors vs other Metal Enclosure Oil impregnated Power Capacitors :

HKFC Power Electronic Capacitors
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Plastic Enclosure and Dry design
Metal Enclosure Oil impregnated Power Capacitors
Plastic Enclosure - Safer Metal Enclosure
Filled with Epoxy Resin - Dry Design Filled with Oil Impregnant
Don't have impregnant liquid leakage problem Impregnant leakage problem - environmentally hazardous leaks or toxic spillage on-site, both cases can be a disaster to the End User, Application manufacturer and Capacitor manufacturer
Dry Design more environmental friendly Impregnant leakage is not environmental friendly design
All plastic parts, enclosure and epoxy resin are UL94-V0 grade Cannot meet UL94-V0 grade
Plastic Capacitor Enclosure doesn't have rust and oxidation problem. Metal Enclosure will have oxidation and rust problem
Higher Insulation Resistance, especially important for High Voltage and High Ambient Temperature application - Low Insulation Resistance
- Normally, capacitor Insulation Resistance will decrease as ambient temperature increase
High Insulation Voltage - Safer Low Insulation Voltage
Very low Leakage Current between Capacitor Terminals and Plastic Enclosure
High Leakage Current between Capacitor Terminals and Plastic Enclosure
Plastic Capacitor Enclosure doesn't need Grounding Metal Capacitor Enclosure need to be Grounding
Doesn't have or less clearance and creepage requirement Larger clearance and creepage requirement
HKFC Capacitor can be installed in any orientation Have installation orientation restriction
HKFC Capacitor can withstand stronger external continuously vibration when compared with Metal Case Oil impregnated capacitors
Cannot withstand stronger external continuously vibration
Smaller ESR and ESL Larger ESR and ESL due to complicate internal connection mechanisms
HKFC Capacitor can be operated up to 105C, depends on the requirement
Low operating Temperature, some up to 85C, some even cannot above 60C
Smaller Thermal Resistance Rth, even at 85C and 105C Higher Thermal Resistance Rth
More reliable, compact, lighter weight and more energy efficient Less reliable, compact and Volumetic efficient
Longer capacitor life Shorter capacitor life - Metal Enclosure has rust, oxidation or oil leakage problem

 

 

 

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