Capacitors of the CMR-HC series are suitable for performing in
the presence of high current stresses resulting from harmonic
distortion, (max. 3
IN), providing maximum reliability
and safety, where traditional capacitors in metallised
polypropylene could undergo degradation.
The
design of the three-phase CMR-HC capacitor is made using
single-phase capacitors of our series MFHC in an aluminium case,
equipped with an overpressure safety device, bi-metallised
self-healing paper plates, polypropylene film dielectric and
filling under high vacuum with a biodegradable non toxic oil
which assures the total absence of partial discharges. The
construction technology of the single-phase MFHC capacitors can
withstand very high peak currents as well as the three-phase
CMR-HC capacitors.
The
case of the CMR-HC capacitor is a self-extinguishing
thermoplastic, with special slits for natural cooling.
The design is modular and connection to the mains is made
by M8 threaded fixing screws.
For
applications in automatic banks, ITALFARAD has included damping
reactors in the design to protect the contactors from sticking
and burning and discharge resistors are also provided having
discharge times adjusted to the automatic response time.
Capacitors without inrush reactors should be used for fixed
power factor correction (available on request).
The three-phase CMR-HC capacitor is manufactured
in the 3 voltage ranges 400Vac - 460Vac - 550Vac.
