• For more details please open our catalogue: Oval capacitors.pdf

    Application and construction

    Capacitors are intended for the improvement of Power Factor in low voltage power networks. Used MKP technology consists of metallized PP film with extremely low loss factor. The dielectric system is self-healing and has no liquid impregnant.

    The capacitors have overpressure protection to disconnect it from the supply in the event of internal failure and at the end of its operational life.

    The construction described above and the use of high quality materials ensure reliability and longevity.

    Technical data

     

    Rated voltage:   UN   250 -690 V
    Frequency:   fN   50/60 Hz
    Standards:      

    ISO9001:2008

    Max overvoltage:   Umax  

    UN + 10 % (up to 8 hours daily)
    UN + 15 % (up to 30 minutes daily)
    UN + 20 % (up to 5 minutes)
    UN + 30 % (up to 1 minute)

    Overcurrent (according to above standards):   IS   1,5 - 2,0 * IN
    Capacitance tolerance:       -5 / +5 %
    Test voltage, terminal/terminal:   UTT   2,15 * UN, AC, 10 s 
    Test voltage, terminal / case:   UTC    3000 V AC, 10 s
    Inrush current:       Max 200 x IN
    Dielectric losses:   tan δ   cca 0,2 W/kvar
             
    Degree of protection:       IP 42, on request IP 54
    Ambient temperature category:       -25 °C / D - maximum is 50 °C 
    - highest mean over any period of 24 h is 40 °C
    - highest mean over any period of 1 year is 30 °C
    Cooling:       natural or forced
    Statistical life expectancy:       100 000 - 150 000 hours (depended on voltage, temper.)
    Max above sea level:       2 000 m above sea level
    Mounting position:       any
    Mounting:       Stud M12 at the bottom
    Case:       Aluminium
    Dielectric:       MKP - metallized PP film
    Impregnant:       Dry type
    Discharge resistors:       1 minute or 75 V, 3 minutes
     

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