Inductors Reactor Chokes

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Air-core dry-type reactors are mainly employed in electric power transmission and distribution systems as well as in electric power systems of electrical plants.

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Line Reactors are modern technology solution for drive application. Protect your drive from harmful line disturbances with Melcon Line Reactor. Reactors help to prevent equipment failure and down time and can add years to the life of your Drive.

Benefits:

• Reduce nuisance over voltage tripping of drive due to transient voltage spikes and power line notches.
• Improves input line current balance on Drive input when line voltage unbalance
• Offer in-rush protection to input rectifiers caused by sudden power line surges sage.
• Offer reduction of input line current harmonics by reducing the current form factor thereby improving power factor.
• Reduce ripple current in the DC bus capacitor bank thus extending their life.

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Load Reactors located between the drive and motor help reduce dv/dt and motor terminals peak voltages due long cable lengths. The use of the load reactors also helps protect drive from surge currents caused by rapid changes in the load.

Benefits:

• Protect motor from long lead effects up to 150 meters
• Reduce output voltage dv/dt below 500V/ sec
• Reduce motor terminal peak voltage below 1000V
• Reduce surge currents
• Extend semiconductor life

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Detuned Reactors or Harmonic Filter Reactors are used for filtering harmonics and high frequency disturbances to capacitor banks and thus improves the operating life span of the capacitor. The amount of attenuation depends on the harmonic frequency and network relations. Filter reactors and capacitors are tuned to the frequency close to harmonic frequency. Most common resonance frequency is 189Hz and the impedance factor is 7%.
 

A. Features of Detuned Reactor:

1. Detuned reactor adopts highly heat-resistant and insulated materials.
2. It employs high-quality cold rolled silicon steel sheet, which causes low lost and are superior in high frequency characteristics.
3. Low magnetic flux intensity, superior linearity, large overload capacity.
4. It uses vacuum pressure impregnation to ensure low noise and high anti-corrosive performance.

 

B. Applications of Detuned Reactor:

1. Restrain higher harmonics and inrush phenomenon
2. Improve power factor of system
3. Reduce pollution caused by harmonic reactor
4. Avoid over amplification and harmonic resonance caused by the access of capacitor