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Low-Voltage Reactor​

In modern power systems, both industrial and residential, the increasing presence of harmonic sources is exacerbating pollution in the power grid. Resonance and voltage distortion can lead to abnormal operation or even failure of many electrical devices. Series reactors can mitigate and prevent these issues. The LSTR series reactors are manufactured using high-quality silicon steel sheets and pure copper wire. They effectively filter out higher-order harmonics in the system, suppress inrush currents when capacitors are connected, and protect capacitors and other components. They feature high linearity, an anti-magnetic leakage design, low noise, low loss, and a long service life.

Main Features

  • Effectively filters out higher-order harmonics in the system

  • Suppresses inrush currents when capacitors are connected

  • Protects capacitors and other components

  • High linearity

  • Anti-magnetic leakage design

  • Low noise

  • Low loss

  • Long service life

Applications

  • Capacitor bank systems
  • Harmonic filtering and detuned compensation systems
  • Industrial and commercial power distribution networks
  • Power quality improvement projects with nonlinear loads
  • Applications requiring capacitor protection and resonance suppression

Technical Data

  • Operating Voltage: 100V – 1000V power systems
  • Voltage Withstand Level: ≥ 3 kV between coils
  • Insulation Class: Class H materials, T40/B
  • Overcurrent Capacity (Imax): 1.8 In (can be designed higher if needed)
  • Linearity (L): ≥0.95 at 1.8 In (can be designed higher if needed)
  • Temperature Rise: 75K between cores, 65K between coils, natural cooling
  • Environmental Conditions: -25℃ to +50℃, altitude ≤4000m
  • Temperature Protection: +120℃ thermal cutoff (normally closed type)
  • Inductance Deviation: -3% Ln to +3% Ln
  • Typical Reactance Rate: 5.67%, 6%, 7%, 12%, 13%, 14%, etc.
  • Protection Level: IP00, indoor installation
  • Filtering Effectiveness: Optimal matching can achieve 30% – 60%
  • Technical Standards: IEC76, VDE0550/0532, etc.
  • 5.67% reactance rate, resonant frequency 210 Hz, primarily targets the 5th and 7th harmonics.
  • 7% reactance rate, resonant frequency 189 Hz, primarily tunes the 5th and 7th harmonics.
  • 12% reactance rate, resonant frequency 144.3 Hz, primarily targets the 3rd harmonic.
  • 14% reactance rate, resonant frequency 134 Hz, primarily tunes the 3rd harmonic.