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Capacitor Production Department

Elkon Ltd. Company is a manufacturer of high quality, high reliability, aluminium electrolytic AC Motorstart Capacitors.

We share %70 of the marked in Turkey, and have customers all over the world.

General Information About AC Motorstart Capacitors

- Construction

Capacitors are manufactured, by using etched and formed pure aluminium foils (%99,99), seperated from each other with a low dencity, dielectric paper, inpregneted with a special electrolyte. Capacitor elements are fixed to the bakelite case, by filling the space between them, with a bituminous compound (softening point 110C min.).

Poles brought out to single or double, fast-on terminals. On requested supplied with end cap, bipolar cable, discharge resistance and metal mounting bracked.


- Application

In a fractional horse power single phase motor, in order to create a high starting torque, it will be necessary to displace the phase of the auxiliary winding by 90 degrees from the main winding, to get a rotating field. This will be achieved by connecting a motorstart capacitor in series with the starting winding. This capacitor and the starting winding will be disconnected automatically, as soon as the motor reaches about %75 of its synchronious speed.






Recommended Capacitors for Use in Single Phase Motors

With a suitable choosen motorstart capacitor, a loaded single phase motor will reach its full speed in approx. 3 seconds.

A table for start capacitors suitable for different HP ratings of 220 Volt AC 50/60 Hz single phase motors is given below.

Motor Rating
(HP)

Motorstart Capacitor
(MFD)

1 / 6

20 - 25

1 / 5

30 - 40

1 / 4

40 - 60

1 / 3

60 - 80

1 / 2

80 - 100

3 / 4

100 - 120

1

120 - 150

1 1/2

150 - 200

2

200 - 250

3

250 - 350



Referance Standarts

EIA

RS - 463

EN

60252 - 2

TS

1056 - 2

VDE

560 - 8



Capacitance and Power Factor Measurement

The voltmeter shall be read within 2 seconds, the ammeter within 3 seconds, and the wattmeter within 4 seconds after the application of the test voltage. Do not apply voltage to the capacitor for more than 4 seconds.





Where: C is capacitance in MFD
I is current in amperes rms
f is frequency in Hz
V is volts in rms
W is power in watts
pF is power factor in %


Temperature Range
- 25 + 65 °C or - 10 + 55 °C

Rated Voltage
110 ---- 330 Volt AC rms 50 / 60 Hz

Overvoltage
Capacitors shall be capable of withstanding the application of 120 percent of rated voltage AC rms 60 Hz for 2 seconds at room temperature conditions, without breakdown or visible damage to them.

Case Insulation
The capacitors shall be capable of withstanding the application of 2000 volts AC rms 60 Hz for 60 seconds, between the terminals and a metal foil tightly surrounding the lateral surface of the plastic case or insulating sleeve without breakdown or flashover.

Vent
Capacitors shall be capable of releasing any excessive internal pressure without violent expulsion of capacitor element or cover or emission of flame, when rated AC rims voltage 50/60 Hz is applied 30 minutes to a capacitor.

Accelerated Life Test
Capacitors shall be capable of withstanding life test at the given max. temperature ± 3°C ambient at rated sinusoidal voltage and frequency with current limiting and discharge resistors.
The duty cycles and duration of test for capacitors are listed below.

At the conclusion of the life test, at room temperature, the capacitance shall not differ from the initial measured value by more than ± 10 % and the power factor shall not exceed 20%.

The duty cycles and duration of test for capacitors are listed below.



Dimentions

Capacitance
(MFD)

110 Vac

220 Vac

250 Vac

21 - 25

2

2

2

25 - 30

2

2

2

30 - 36

2

2

2

36 - 43

2

2

2

43 - 53

2

2

2

47 - 56

2

2

2

53 - 64

2

2

2

64 - 77

2

2

2

72 - 88

2

2

2

88 - 108

2

2

2

108 - 130

2

2

4

124 - 149

2

2

4

130 - 156

2

4

4

145 - 175

2

4

4

161 - 193

2

4

4

189 - 227

2

4

4

216 - 259

4

4

6

233 - 280

4

4

6

280 - 333

4

4

6



Case Code

Diameter (D)
(mm)

Length (L)
(mm)

2

36.50

85.72

4

46.02

85.72

6

52.37

85.72



Mounting Bracked



End Cap

End Cap For Case

Cap Diameter (mm)

2

36.50

4

46.02

6

52.37



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