In this section I shall try to give instructions to select a detuned reactor (reactor -capacitor combination)
The table below is given in format which allows reader to print and use it as it is.
Steps
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Fill Below
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Remarks/Actions
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1.
Network voltage
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||
2.
Frequency
|
For 60Hz. Contact us directly.
|
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3. Harmonic spectrum is
known
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3rd
|
14% detuning if 3rd present
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5th
|
7% to 5.6% if 5th present
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7th
|
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9th
|
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4. Harmonic currents
are known
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Go to 5th step
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Ih >
1.5 In
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Consult Specialist
|
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1.3In > Ih > I.5In
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5.67%
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|
1.1In > Ih > I.3In
|
7%
|
|
5.
Resonant conditions
exists
|
Select 7%
|
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6. No info on Harmonic
currents
|
Select 7%
|
|
7.
Select compensation
steps
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8.
Adjusted or
non-adjusted
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See example calculations below
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9.
Reactor material
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Recommend Aluminium
|
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10.
Linearity
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Standard or customised.
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11.
Terminations
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12.
Thermal cutouts
|
Recommended
|
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Selection complete. Refer PFC components Catalogue
for part numbers.
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25 kvar 440 V 50Hz 3 x 137uF (411uF)
To be detuned to 189Hz (7%)
Selection of the reactor-
25 kvar 440 V 50Hz 3 x 137uF (411uF)
To be detuned to 189Hz (7%)
Using the above methods it is easily possible to arrive at the correct values for the detuned combination.
For more information please visit Electronicon-SE or contact us directly.
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