Inrush Currents : When capacitors are used as part of an automatic assembly, where a large number of switching cycles are possible, the inrush current must be limited to 2 00 In, otherwise the capacitors may experience reduced life expectancy.
To ensure that life expectancy of the capacitors is protected, these capacitors should be fitted with suitably rated chokes.
Capacitors of 55 mm and 65 mm can be supplied with internal chokes.
Capacitors of 75 mm, 85 mm , 100 mm and 116 mm chokes must be fitted external.
The above can be supplied as an option extra cost on request.
The alternative to chokes it to use special contactors designed for use with capacitors and equipped with insertion resistors.
The capacitors are assembled in an Aluminium Case with M12 fixing stud.
The 55 mm and 65 mm diameter capacitors are equipped with M6 screw terminals and the 75 mm, 85 mm, 100 mm and 1 16 mm diameter units are equipped with a clamp type terminal .
The TCC three-phase capacitor for low voltage Power Factor Correction complies with the following Standards:
EEC 89/336 Standards (amended by EEC 92/31 – EMC)
EEC 73/232 Standards (amended by EEC 96/3 – Low Voltage).
The dielectric is metallized polypropylene film, filled with non polluting biodegradable material (PCB free).
|Rated voltage||450 Vac|
|Rated frequency||50 Hz / 60 Hz|
|Power tolerance||-5% + 10%|
|Total dielectric losses without chokes||< 0,20 W/KVAr|
|Working ambient temperature||-25°C + 55°C|
|Max working voltage||1,1 Un|
|Max allowed current||1,3 In|
|Max allowed switch-on current||200 In|
|A.C. test voltage between terminals||2,15 Un for 2 sec.|
|A.C. test voltage between case||3 kV for 10 sec.|
|Internal connection||Delta three-phase|
|Internal functional protection||Internal Overpressure disconnector|
6MA screw ( ø 55-65 mm)
|Filling||Biodegradable non toxic dry type, PCB free|
|Service type||Continuous, indoor|
|Discharge time||<3 minutes to 75V|
|Mounting position||Vertical preferable for better cooling|
|Insulating level||3/15 kV|
|Reference standard||CEI EN 60831-1/2 IEC 831-1/2|