Reactors
Detuned & Tuned Reactors
Standards: IEC 60076, IEC 60289, IEC 60076-6
Technical Specifications
- Voltage Range: 230V to 1000V AC (LV); MV options on request
- Inductance: Designed for detuning at 189 Hz (7%), 134 Hz (14%), or other tuning frequencies
- Tuning Factor (p%): 5.67%, 7%, 14% typical
- Type: Single-phase / Three-phase dry-type reactors
- Core Material: Low-loss grain-oriented silicon steel / ferrite core Low Magnetic Loss
- Low Magnetic Loss
- Winding: Copper or aluminium, class H insulation
- Cooling: Natural air cooled (AN), forced air on request
Design Features
- Iron-Core Design with Air Gap – Stable inductance under load
- Low Temperature Rise – Long operational life
- Compact Construction – For panel integration
- Noise Level: <50 dB (low acoustic noise)
- Prevents resonance and mitigates harmonic amplification
Compliance & Testing
- Tested For: Inductance tolerance, hot-spot temperature, voltage withstand, impulse
Types
- Series Reactors: Connected in series with the load or capacitor banks
- Shunt Reactors: Connected in parallel to the system
- Line Reactors: Installed between the power supply and a device, like a VFD
- Load Reactors: Connected between VFD output and motor
- Harmonic Filter Reactors: Used with capacitors to form tuned / detuned filters
- Neutral Grounding Reactors: Connected between the neutral point and earth in medium voltage systems
OPTIONAL ADEDED FEATURES
Thermal Protection: Thermistor or thermal switch.
APPLICATIONS
VFD protection
Motor protection (long cables)
Short-circuit current limiting
Power quality improvement
High-voltage grid compensation
Neutral fault limitation
Reactor Type Used
Line Reactor
Load Reactor
Series Reactor
Harmonic Filter Reactor
Shunt Reactor
Neutral Grounding Reactor
Purpose
Reduce harmonics and voltage spikes
Reduce voltage stress on motors
Limit fault current to safe levels
Mitigate specific harmonic orders
Absorb reactive power to control voltage
Control fault current in grounded systems
Secial Reactors
Technical Specifications
- Voltage Range: Up to 1500V DC / 690V AC
- Frequency: 50/60 Hz (custom for wind power variation)
- Insulation Class: Class F / H (155–180°C
- Inductance Tolerance: ±5% (high precision winding)
- Core Type: CRGO steel / Amorphous alloy (on request)
- Harmonic Tolerance: Up to 50th harmonic
- Protection Level: IP20–IP44 (dust and outdoor protection options)
- Construction: Resin-impregnated, low-noise, vibration resistant
Types
- Liquid Cooled
- Air Cooled
- Double Air Cooled
OPTIONAL ADEDED FEATURES
Thermal Protection: Fault Current Limiting
APPLICATIONS
Reactive Power Support during Low Sun/Wind
Inverter Protection & Filtering
Wind Turbine Pitch System
Solar Inverter DC Side Support
Reactor Type Used
Fixed/Shunt Capacitor Banks
RC Snubber Circuits / Film Capacitors
DC Link Film Capacitors
DC-Link Capacitors (Electrolytic/Film)
Purpose
Provide consistent reactive power when generation drops.
Protect inverter switches from voltage spikes and filter noise.
Store and stabilize energy for blade pitch control system.
Stabilize DC voltage before inverter conversion.
MV Choke Reactors
Technical Specifications
- Voltage Range: Typically from 3.3 kV to 33 kV, matching MV capacitor bank ratings.
- Current Rating: Designed for load currents from 50 A to 800 A (or more), depending on application size.
- Inductance Value (L) : Typically designed to offer a 6% to 7% impedance (e.g., 190–200 µH), depending on detuning.
- Thermal Class : Class H or F insulation, suitable for 55–65°C ambient temperatures.
- Installation : Outdoor/indoor rated; floor or panel mounted with brackets or insulators.
- Cooling Type: Natural air-cooled (AN); forced cooling (AF) optional for high-load applications.
OPTIONAL ADEDED FEATURES
Overcurrent Capacity Can handle 1.5–2× rated current for short durations during switching transients
Noise Level < 65 dB at 1 meter distance (typical), depending on the installation.
APPLICATONS
Limits inrush currents,
controls harmonics
detunes resonant frequencies