Application
ESTAprop® PhMKP-type capacitors in cylindrical aluminium casing have been designed for Power Factor Correction in low voltage plants. Loads as motors and transformers consume real power as well as reactive power. Generators, supply cables, and other electrical distribution equipment should be relieved from reactive power.

Design
The ESTAprop® MKP capacitor is a metallized polypropylene film capacitor with self-healing properties. The current carrying metal layer of an MKP capacitor is vaporised onto one side of the polypropylene film. The front surface of tubular winding elements are joined by means of the metal spray method (schooping). Three winding elements are encapsulated in one aluminium casing and connected to form a true 3 phase capacitor. The overpressure tear-off fuse prevents the capacitor from bursting at the end of service life, or due to inadmissible electrical or thermal overloads.

The assembly is impregnated with a natural oil (fire 300C) under vacuum and hermetically sealed. This construction method ensures excellent heat dissipation and constant capacitance over an extended period of time.

The capacitor is housed in a tubular aluminium container with a metal lid press-rolled onto it. The current is supplied via screw-on (M5) or push-on (6.3*0.8mm) connectors. A threaded stud (M12) at the bottom of the container serves for both grounding and mounting.

ESTAprop® capacitors will be delivered together with discharge resistors and fixing material for mounting and connection.

PhiCap™ AC Capacitors for Power Factor Correction

PhiCap™ applications

• Power factor correction (PFC)
• Automatic capacitor banks
• Fixed PFC (power factor correction) applications, e.g. motor compensation
• AC power electronics
• Uninterruptible power supplies (UPS)
• Drive engineering

User benefits

Electrical

• Up to 25 kvar per case for threephase applications
• Up to 5 kvar per case for singlephase applications
• Long expected life cycle, 80000 hours
• High pulse current withstand capability (100 * IN)

Mechanical & Maintenance

• Reduced mounting costs, easy installation and connection
• Low weight and compact volume
• Any mounting position except upside down
• Maintenance free

Safety

• SH type (self-healing capacitor type)
• Overpressure disconnector

Enviroment

• Non-polluting, environment friendly product
• PCB-free product (NPCB)