AC and DC capacitors
Electronicon metalfilm capacitors can be used for a wide variety of applications, even when extremely non-sinusoidal voltages and pulsed currents are present. Both AC and DC capacitors are available.
AC capacitors are periodically recharged during operation, whereas DC capacitors are periodically charged and discharged without a recharge.
The application of AC capacitors
AC capacitors serve as damping or snubber capacitors connected in series with a resistor and are designed for the damping of undesirable voltage spikes caused by the so-called carrier storage effect during the switching of power semiconductors. When applied as commutation capacitors, they are switched in parallel to a thyristor and designed to quench its conductive state. Since commutating capacitors are periodically and abruptly recharged, the peak current will substantially exceed the RMS value. Furthermore, AC capacitors are used in low-detuned or close-tuned filter circuits for filtering or absorbing harmonics.
Metal film DC capacitors
The scope of application for DC capacitors is similarly diverse: Smoothing capacitors help reduce the AC component of fluctuating DC voltage. Supporting capacitors, DC filters, or DC link capacitors are used for energy storage in intermediate DC circuits, e.g. in frequency converters for polyphase drives, transistors, and thyristor converters. They must be able to absorb and release very high currents within short periods – the peak value of the current being substantially greater than the RMS value.
Electronicon capacitors
E67 GA85 Mesis®: Low-inductance DC link capacitors with Overpressure Protection
Download catalog Mesis Electronicon
- Cylindrical shape, dry design (gas-filled), very lowest self-inductance
- DC voltage range: 700V…4000V
- Capacitance: 45…4000µF
- RMS current rating up to 120A
80 PKmind®: DC Link Capacitors with ultra-low self-inductance
- Cylindrical shape, no liquids, high capacitance density
- DC voltage range: 900V… 1300V
- Capacitance: 130…955µF
- RMS current rating up to 100A
E67, PK16, E80, E6: DC Capacitors
Download cataog E67, PK16, E80, E61
- Cylindrical shape, dry design (no liquids), very low self-inductance
- DC voltage range: 500V…4000V
- Capacitance: 100…7400µF
- RMS current rating up to 120A
E57/E59/SR17: Box-shaped capacitors for heavy currents and large capacitances
- Steel, aluminum or plastic housing dry design (no liquids)
- reliable protection by pressure switch
- DC voltage range: 500 … 25,000 V
- AC voltage range: 200 … 17,000 V
E62 and E64: AC capacitors for universal use with BAM protection
- Metal can, cylindrical shape, oil-filled, internal safety mechanism
- AC voltage range: 420Vac (300Vrms) … 5000Vac (3500Vrms)
- DC voltage range: 700V…5000V
E51/E53/E55: low-inductance AC/DC capacitors for general use, especially for high operating voltages
- Plastic can, cylindrical shape, dry design (no liquids) very low self-inductance
- DC voltage range: 600V … 50,000 V
- AC voltage range: 280V … 20,000 V
E62-3ph and 3HF: Three phase Heavy Duty capacitors for filters and PFC 640Vac (450Vrms) … 1700Vac (1200Vrms), oil filled
Download catalog E62-3ph and 3HF
E51/E53/E55: Low-inductance AC/DC capacitors for general use, especially for high operating voltages
- plastic can, cylindrical shape, dry design (no liquids)
- very low self-inductance
- DC voltage range: 600V … 50,000 V
- AC voltage range: 280V … 20,000 V
