C&H Technology LVAC - Manual (Page 3)

PhMKP..., PhMKPg..., Cylindrical, LVAC
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Vishay ESTA
Revision: 09-Dec-11 2 Document Number: 13004
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CAPACITORS IN CYLINDRICAL CASING
APPLICATION
The Vishay ESTA PhMKP/PhMKPg series of power factor
correction capacitors in cylindrical aluminum casing now
provide higher kvar/voltage combinations for use in
low-voltage systems.
The newly available 116 mm and 136 mm diameter
capacitors complete the successful range of compact and
slim cylindrical capacitors of 64 mm and 84.4 mm diameter
design up to the lowest outputs of the triangular can design
of the PhMKDg model.
The 116 mm and 136 mm start where the output of the
84 mm design ends. At the point of change, the customer
has two options: the lower height profile of the 116 mm and
136 mm or the slimmer diameter of the 84.4 mm design.
The Vishay ESTA LVAC capacitors are suitable for use in
both standard PFC applications and in heavy-duty
applications such as wind turbines:
• automatic PFC-equipment
• individual fixed PFC (e.g. motors, transformers, lighting)
• group fixed PFC
• tuned and detuned capacitor banks
• harmonic filters (e.g. UPS, frequency drives, converter)
DESIGN
The Vishay ESTA LVAC MKP capacitors are metallized
polypropylene film capacitors 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 aluminum casing and 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 capacitor is housed in a tubular aluminum container
with a aluminum lid press-rolled onto it (64 mm and
84.4 mm) or welded (116 mm and 136 mm). The current is
supplied via IP00 screw-on (M5) or IP20 block type safety
terminal. A threaded stud (M12) at the bottom of the
container serves for both grounding and mounting.
The Vishay ESTAprop and ESTAdry capacitors will be
delivered together with discharge resistors and hardware for
mounting and connection.
Vishay ESTA standard capacitors of 64 mm, 84.4 mm,
116 mm and 136 mm diameter will be delivered together
with a thickfilm discharge resistor unit and fixing material for
easy mounting and connection. In 84.4 mm diameter IP00
design there is also an option for feed-through (IN-LINE)
connection of the capacitors to the supply.
The entire range of Vishay ESTA LVAC products are offered
in both natural oil-filled ESTAprop PhMKP and gas-filled
ESTAdry PhMKPg versions.
1-/3-PHASE CAPACITOR, IP00 SCREW-TYPE
TERMINALS 84.4 mm DIAMETER
1-/3-PHASE CAPACITOR, IP20 TERMINAL
BLOCK 64 mm/84.4 mm DIAMETER
3-PHASE CAPACITOR, IP20 TERMINAL BLOCK
116 mm DIAMETER
3-PHASE CAPACITOR, IP20 TERMINAL BLOCK
136 mm DIAMETER