Product category:
Capacitors
News Release from: Epcos | Subject: PhaseCap HD capacitors
Edited by the Electronicstalk Editorial
Team on 22 May 2001
Heavy-duty power factor correction
capacitors
Epcos has a new series of PhaseCap HD AC capacitors for power factor correction which it claims are the first to be capable of covering 25-60kVAr with a single capacitor.
Epcos has a new series of PhaseCap HD AC capacitors for power factor correction which it claims are the first to be capable of covering 25-60kVAr with a single capacitor - improving thermal response and simplifying installation The new PhaseCap HD series has been developed for heavy-duty industrial applications with extreme demands for useful life, constant capacitance and a high inrush current withstand capability
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
Related stories
Low-profile design for tantalum polymer capacitors
Epcos is now shipping polymer tantalum capacitors in case size X, measuring only 1.5 mm high, 7.3 mm long and 4.3 mm wide.
Electrolytic capacitor shortform
Epcos, one of the world's largest suppliers of passive products has just released a new shortform catalogue detailing its comprehensive range of electrolytic capacitors.
This makes them ideal for detuned capacitor banks, wind turbine systems, AC power electronics, uninterruptible power supplies and filtering harmonics in modern power electronic applications.
Such applications typically require power steps of 25 or 50kVAr switched by a PFC controller via each capacitor contactor.
This new series provides increased packing density per bank with a decrease in component costs.
Further reading
Epcos catalogues its full range
Epcos has just released a new product survey catalogue giving details of its entire range of components.
Shrinking filters for analogue cellular
Epcos is now the world's first manufacturer of SAW components to make IF filters with a footprint of only 9 x 5mm for mobile phones to the IS-95 CDMA standard operating in the AMPS band.
Capacitors used in PFC need to endure regular switching, subjecting them to inrush currents that must be withstood without degrading service life.
The pulse strength of this new technology comes in particular from the enlarged, sensitive contact area (sprayed metal layer).
EPCOS PhaseCap HD capacitors are able to withstand ultra-high inrush currents through its patented "wavy cut" technology, in addition to the capacitors heavy edge film design.
This enables inrush currents of more than 200 times rated current to be handled easily.
The capacitor is impregnated with an inert gas whilst in a high vacuum, eliminating all traces of air and moisture.
Once sealed in its cylindrical aluminium case, routine tests are performed for gas leakage.
This production process helps to avoid oxidation of the electrodes and eliminate partial discharges (corona effect).
It also ensures excellent capacitance stability, and provides the capacitor with a maintenance free life of around 130,000 hours.
The technology also features a triple safety system, incorporating dry technology, self-healing and an overpressure disconnector to provide enhanced reliability.
Dry technology, through the use of an inert gas, as opposed to oil, reduces fire risks caused by leaking or spurting oil and avoids soiling of sensitive equipment.
As it is non-polluting and allows simple disposal, dry technology is seen as a must in applications with an ecological content, and when combined with a light and compact design, means that the capacitor can be mounted in a wide range of positions - helping to create space-saving designs.
The series' self-healing system allows it to repair itself after thermal or electric overload, while the overpressure disconnector prevents the capacitor from bursting at the end of its useful life, or through electrical or thermal overload.
SIGUT terminals provide reliable and straightforward connection, even in a parallel capacitor circuit.
This allows simplified parallel connection of input ends in series, in addition to providing protection against the hazard of electric shock.
• Epcos: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
