Description
1 General
When HUS series three-phase series filter electric reactor is making capacitive reactive power, it is always affected by harmonic current, switching-on, inrush current and switching overvoltage, causing damage to capaci-tanceanddecreasingpowerfactor.Therefore,athree-phasefilterelectricreactorshouldbeaddedonthefrontend of the capacitor to suppress and absorb harmonic wave, protect capacitor, avoid the influence caused by harmonic voltage and current and impulse voltage and current, improve power quality and increase system power factor and pro long capacitor lifespan.
2. Normal working and installation conditions
Ambient temperature：-25℃~+50℃
Relative humidity：40℃≤20%；20℃≤90%
Altitude：≤2500m
Environmental conditions: nonoxious gas and vapour; no conductivity or explosive dust; no violent mechnical vibration.
3. Main structural features
- Their on-cored and air-immersed products are classified as three phase and single phase.
- The iron core is made of high-quality cold rolled silicon steel plate, which is punched and sheared with high-speed punch and has features like minute burr, regularity and eveness, and neats tacks, ensuring the capacitor run with low temperature rise and low noise.
- The coil employs high-quality insulated wire and is wound with a special machine, featuring advantages as good flatness and beautiful appearance.
- During the installation of electric reactor, all fixures have been anti-corrosion treated, with some key fixtures made of non-magnetic material, and experienced the Pre-dry → Vacuum impregnation → Heat curing process, which integrates the coil and iron core solidly, greatly reduces the running temperature rise and noise, and effectively increase the quality factor of electric reactor and the effect of harmonic wave reducing.
- The dimensions of electric reactor are designed referring to standard cabinet dimensions, with features like small body, simple connection, and much lesser investment on the cabinet.
- 4. Specifications and technical data
- Suitable capacitance and voltage are:：4kV、0.45kV、0.48kV、0.525kV、0.66kV、0.69kV；
- Reactanceratio:0.1%、3%、0.5%、1%，Mainlyusedinrestrictingswitching-oninrushcurrent:4.5%、5%、6%、7%Usedinrestrictingswitching-on in rush current and suppressing five or more harmonic waves；12%、14%，Used in restricting switching-on in rush current and suppressing three or more harmonic waves.
- Pressure levels are:5kV/min Insulation class: B, F, H; noise≤ 30dB; continuous operation when overload ca-pacity≤1.35In;
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