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PFC capacitors support voltages up to 690VAC

18 Apr 2016

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TDK Corp. has introduced two series of high power capacitors for power factor correction. The EPCOS PhaseCap Energy components, available with gas or resin-filled housings, are designed for voltages of 230VAC to 690VAC and offer a reactive power of between 5kvar and 33kvar.

The life expectancy of the B25674 series of gas-impregnated capacitors has been possible to extend by nearly 40 per cent from 130,000 to 180,000 hours. The maximum permissible inrush current was also increased by 25 per cent to 500 x IR. The capacitors can also be switched significantly more frequently: For example, 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 now been raised by 5K to 60°C.

EPCOS PhaseCap Energy

The B25675 series of resin-filled capacitors features an even longer 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.

A further significantly improved feature of both series is their increased energy density in comparison with the existing types: For the 28kvar/440V types, for example, this has been raised by more than 20 per cent from 9.7kvar/l to 11.8kvar/l. This also results in compact dimensions: The PhaseCap Energy capacitors feature a diameter of between just 75mm and 125mm, depending on the type, and a height of between 164mm and 224mm.

Like all EPCOS three-phase PFC capacitors PhaseCap Energy is equipped with an overpressure disconnector that isolates all three phases from the grid in the event of damage.

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