As people's living standards improve, the use of single-phase electricity becomes increasingly complex in places like shopping malls, banks, and schools, where hundreds of electronic energy-saving devices such as microcomputers, televisions, and LED lights are in use. The extensive use of these non-linear loads generates severe third harmonic distortion, with the third harmonic reaching over 80% of the fundamental current. Since the vector angles of the third harmonic currents are the same, the three-phase vectors cannot cancel each other out, but instead, they accumulate on the neutral line, causing the neutral line current to exceed twice that of the phase line. The concentrated use of loads leads to an excessive neutral line current, which can be twice as high as the line current! This results in frequent tripping of leakage switches, and many electrical professionals are unable to find the cause, either replacing the leakage switch directly or leaving behind unforeseen safety hazards!

The Neutral Current Eliminator, developed and manufactured by Shanghai Kefei Electrical Co., Ltd., is a dedicated solution for excessive neutral current caused by the superposition of three harmonics on the neutral line. It fundamentally eliminates the risks of electrical fires, such as neutral current overheating and circuit breaker tripping, associated with the excessive neutral current.

Zero-Current Interrupter Functions and Features

Effectively reduce the current on the neutral wire, ensuring that the neutral wire current is less than 30% of the phase current.
Avoid overheating of cables and wires, reduce losses, and overall save on electricity and utility costs.
Eliminate the electrical fire hazard caused by excessive neutral wire current.
Avoid power fluctuations to interfere with precision equipment, enhance the stability of electrical equipment operation.
Can balance three-phase current, enhancing the quality of electricity usage.
Easy installation, stable operation.

Shanghai Kefiller Electric Co., Ltd. specializes in power quality management products: harmonic protectors, active filters, neutral current eliminators, and related products. For details, please inquire.
Any questions about neutral wire current eliminators, pricing, dimensions, specifications, etc., please call for inquiries!