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High power PFC capacitors

06 Jul 2016

TDK Corporation presents EPCOS PhaseCap Energy – two new series of high power capacitors for power factor correction. These components are available with gas or resin-filled housings. Designed for voltages of 230 VAC to 690 VAC, they offer a reactive power of between 5 kvar and 33 kvar. The life expectancy of the B25674* series of gas-impregnated capacitors has been possible to extend by nearly 40% from 130,000 to 180,000 hours. The maximum permissible inrush current was also increased by 25% to 500 x IR. The new capacitors can be switched more frequently: the maximum number of switching cycles per year has been doubled from 7500 to 15,000. The maximum permissible operating temperature as per IEC 60831-1 has also been raised by 5 K to 60°C. The B25675* series of resin-filled capacitors features a long life expectancy of 200,000 hours and is likewise designed for a maximum operating temperature of 60°C and a maximum permissible inrush current of 500 x IR. Both series have increased energy density: For the 28 kvar / 440 V types, for example, this has been raised by more than 20% from 9.7 kvar/l to 11.8 kvar/l. This results in compact dimensions: The new PhaseCap Energy capacitors feature a diameter of between 75 mm and 125 mm, depending on the type, and a height of between 164 mm and 224 mm. PhaseCap Energy is equipped with an overpressure disconnector that isolates all three phases from the grid in the event of damage. 

TDK Corporation |

Volume: 2016 July/August