B32674 datasheet(14/43 Pages) EPCOS

14 / 43 page

14 3/23

Please read Cautions and warnings and

Important notes at the end of this document.

Metallized polypropylene film capacitors (MKP)

B32674 ... B32678

MKP DC link – high power series

^VAC ≤0.2 · VR

Vp,max:

NOTE 1

An overvoltage equal to 1.5

∙ VR for 30 ms is permitted 1000 times during the life of the

capacitor.

The amplitudes of the overvoltages that may be tolerated without significant reduction in the life time

of the capacitor depend on their duration, the number of application and the capacitor temperature.

In addition these values assume that the overvoltages may appear when the internal temperature

of the capacitor is less than 0 °C but within the temperature category.

NOTE 2

The average applied voltage must not be higher than the specified voltage.

Pulse handling capability

"dV/dt" represents the maximum permissible voltage change per unit of time for non-sinusoidal volt-

ages, expressed in V/μs.

Note:

The values of dV/dt and k0 provided below must not be exceeded in order to avoid damaging the

capacitor. These parameters are given for isolated pulses in such a way that the heat generated by

one pulse will be completely dissipated before applying the next pulse. For a train of pulses, please

refer to the curves of permissible AC voltage-current versus frequency.

dV/dt values

Overvoltage

Maximum duration within one day Observation

1.1

∙ VR

1.15

∙ VR

1.2

∙ VR

1.3

∙ VR

30% of on-load duration

30 min

5 min

1 min

System regulation

Lead spacing 27.5 mm

37.5 mm

Type

B32674

B32676

VR (V DC)

300

450

630

750

875

300

450

630

750

875

dV/dt in V/µs

100

125

150

100

Lead spacing 52.5 mm

Type

B32678

VR (V DC)

300

450

630

750

875

dV/dt in V/µs

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