Products Description
The Three Phase Input Reactor is custom‑designed for installation at the front end of frequency converters and rectifier equipment. It adopts integrated construction with high‑grade silicon steel laminations and oxygen‑free copper windings, featuring a symmetrical three‑phase structure, high insulation class and consistent heat dissipation performance. Connected in series between the grid and power devices, it buffers grid‑side voltage fluctuations and suppresses switching inrush currents via its inductive properties. It attenuates grid harmonics, reduces distorted currents fed back to the utility grid from rectification, and minimizes interference to surrounding precision electrical equipment caused by voltage distortion.
Working Principle
Installed in series on the incoming terminals of a three phase AC power supply, the Three‑Phase Input Reactor leverages inductive impedance to block high‑order harmonic currents, effectively restraining harmonics from propagating back toward the grid. Additionally, the reactor smooths current waveforms and caps peak short‑circuit currents, creating a stable, reliable power supply environment for non‑linear loads such as downstream frequency converters and rectifiers, and achieving comprehensive power quality optimization.
Application Scope
Variable Frequency Drives
Commonly fitted on the input side of frequency converters, it suppresses harmonics and safeguards converters to guarantee stable performance of motor drive systems.
Rectifier Equipment
Suitable for the front end of all types of rectifier units, it optimizes grid‑side power quality and lowers harmonic contamination of public utility grids.
UPS Power Supplies
Paired with uninterruptible power supplies, it stabilizes incoming current waveforms and secures continuous, dependable power delivery to critical loads.
Industrial Production Lines
Ideal for the power input front end of all automated industrial production lines, it enhances power quality and supports long‑term stable equipment operation.
Commercial Buildings
Deployed within power distribution systems of shopping malls, office towers and other commercial premises, it optimizes power quality to meet official power supply code requirements.
New Energy Sites
Mounted on the input side of photovoltaic inverters and energy storage systems, it suppresses harmonics and stabilizes currents to ensure compliant grid‑tied power quality.
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Functional Features
Effectively filters high‑order harmonic currents on the supply input side, improves grid power quality and eliminates interference with other connected equipment.
Built with robust current limiting capability, it suppresses instantaneous surge currents and protects downstream sensitive hardware from surge damage.
Smooths fluctuations in incoming supply voltage, delivers a more stable power source for downstream equipment and extends the overall service life of connected machinery.
FAQ
Q: Will the reactor experience accelerated aging under long‑term non‑stop operation?
A: When properly matched to design operating conditions, the reactor ages extremely slowly with uniform heat distribution during operation; local overheating that accelerates component wear will not occur. Provided the surrounding area is well ventilated, the unit can sustain stable performance through continuous long‑term running.
Q: Will the Three Phase Input Reactor be adversely affected in environments with dust and minor mechanical vibration?
A: Light dust accumulation and standard equipment vibration do not impair normal operation. As long as basic ventilation is maintained and heavy dust buildup blocking heat dissipation surfaces is prevented, the reactor will operate steadily without frequent malfunctions.
Q: Can the reactor provide current buffering when multiple high‑power devices on the same supply circuit start simultaneously?
A: Yes, it delivers significant buffering performance. Instantaneous heavy currents generated by synchronous startup of multiple loads will be buffered and attenuated by the reactor, preventing surge currents from impacting individual equipment control systems and reducing error alerts and circuit tripping during mass startup.
Q: Does the Three Phase Input Reactor produce loud audible noise during operation?
A: It runs at an extremely low noise level under nominal operating conditions; only faint hum can be heard when standing directly adjacent to the unit. No harsh abnormal noise is generated to disrupt workshop working environments.
Factory Environment
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