DETUNED REACTOR
Displacement power factor correction systems are made up of switched banks of capacitors adding capacitive reactive current to neutralize the inductive reactive
current of the load. In the presence of high harmonic currents, the voltage waveform becomes distorted with the distorted voltage applied to the terminals of the capacitors. The impedance of the capacitor reduces with increasing frequency.
Detuned Capacitors: The addition of detuning reactors to power factor correction capacitors causes the terminal voltage of the capacitors to rise in the presence of harmonics. Capacitors designed for use with detuning reactors are
typically rated at 525V or 565 volts for a 380/400 volt system. The KVAR rating of the capacitors is based on the actual supply voltage.
Detuning reactors: The detuning reactors are designed to be used with special high voltage capacitors and are rated in KVAR where the KVAR rating is the KVAR of the capacitor. The series circuit of reactor and capacitor forms a resonant circuit and the resonant frequency of this is not near a harmonic frequency. Hence the detuning reactor must match the detuned capacitor. Detuned reactors are specific three phase inductors dedicated to attenuating the amplification of harmonics on highly polluted networks and to protecting the different components of the installation.
Features
- For Triplen and Non-Triplen Harmonic suppression though PF Capacitors.
- With Thermal Switch
- Line Vol tage for series combination of Reactor & capacitors: 380V,
415V, 433V, 440V AC.50H 3ph supply. - Current : Continuous RMS value: 150% of the rated current .
- Electrolytic grade copper winding.
- Operating ambient temperature-10 to +50 Deg C.
Advantages
- Avoids the resonance phenomenon among the capacitor and the short circuit impedance of the electrical installation.
- Filters a high spectrum of harmonics.
- Is based on a way of low impedance for the harmonics, and the linear loads are not affected by it.
- Does not get its operation altered by changes of the loads.
- It is a solution that finds a commitment among the effective extenuation of the harmonics and the economic investment.
This type of transformer is used in applications where the transformer is to be installed in harsh climatic conditions (smoke, pollution, dusty environment,etc.) or if the transformer is KNAN cooling type.
Auto Transformer
An autotransformer (sometimes called auto step down transformer) is an electrical transformer with only one winding. In an autotransformer, portions of the same winding act as both the primary and secondary sides of the transformer.
lightening transformers
Electrically isolating of the lighting load from main load. Better control on protection systems due to separation of neutral of lighting load & main load