CMI4 Series

Metallized polypropilene film single phase motor capacitors

, CMI4 Series, Meco Capacitors

The capacitors generally defined as motor capacitors are used for the start up and running
of single-phase induction 2 and 3 windings motors.
The capacitance of these capacitors (permanent connection) must be carefully established
to avoid possible overheating of the auxiliary winding.
Construction peculiarities
For the construction of these capacitors a polypropylene film dielectric is used, metallised in a vacuum,
self-healing that allows the obtaining of capacitive units with very low losses and reduced
overall dimensions. These elements are subsequently encapsulated in plastic case
and then incorporated in resin.

Caratteristiche Tecniche
Technical details
Tolleranza capacità
Capacitance tolerance
Tensione nominale
Rated voltage
450 Vac
Frequenza nominale
Rated frequency
50/60 Hz
Angolo di perdita
Loss angle
tanδ ≤ 20 x 10-4 (Vn - 50Hz)
Temperatura di lavoro
Operating temperature
-25°C +85°C
Categoria climatica
Climatic category
Tensione di prova
Test voltage
tra le armature: 2 Vn x 2”
between terminals: 2 Vn x 2”
verso Massa: 3000 Vac x 2”
between terminals and case: 3000 Vac x 2”
Resistenza isolamento
Insulation resistance
104 MΩ x μF
Norma di riferimento
Reference standard
Classe funzionamento
Application class
B=10.000 h
Grado di protezione
Protection degree
Classe di sicurezza
Security class
Contenitore e coperchio
Case and cover
in materiale plastico autoestinguente grado V2 secondo UL94
in self-extinguishing plastic material grade V2 in according to UL94
Temperatura di stoccaggio
Storage temperature
-40°C +85°C


Improper use of the capacitor such as, for example, applications that involve exceeding the capacities and/or characteristics reported on a given capacitor, can cause an irreversible breakdown and/or breakage that can occur with the explosion of capacitor or with a deterioration such as to manifest loss of capacity, increase of power factor and permanent circuit interruption. Meco Capacitors declines any responsibility for damage to the capacitors, to persons or things deriving from improper or incorrect use of their products.
RoHS Directive
MECO Capacitors products are in line with the European directive 2002/95/EC already known as RoHS directive.