TH25869U - Harmonic and loss reduction devices in 3-phase, 4-wire electrical systems - Google Patents

Abstract

------18/04/2025------(OCR) OCR 10KL, a harmonic reduction and loss reduction device in a 3-phase, 4-wire electrical system, is made from a plastic box (1) with a coil (2) inside. The coil (2) is made of copper conductor wire, wound on a flexible steel pipe (3) back and forth in 3 layers. Inside the flexible steel pipe (3), there is a ring-shaped ferrite core (4) wrapped with a full layer of copper wire, arranged in rows of 3 cores. Both ends of the wires of the coil (2) are inserted through the outside of the plastic box (1) to be connected in parallel with the neutral wire coming from the low-voltage transformer. To reduce the leakage of harmonic current from the transformer to the neutral line in a 3-phase 4-wire electrical system, the result is a saving of 15 to 35 percent on electricity costs. ------------ ------18/04/2025------(OCR) OCR 10KL Harmonics attenuator and loss reduction device in a 3-phase 4-wire electrical system is made from a plastic box (1) with a coil (2) inside. The coil (2) is made of copper conductor wire wound on a flexible steel pipe (3) back and forth in 3 layers. Inside the flexible steel pipe (3), there is a ring-shaped ferritecore (4) wound with a single layer of full copper wire, arranged in rows of 3 cores. Both ends of the wires of the coil (2) are inserted through the outside of the plastic box (1) to be connected in parallel with the neutral line coming from the low-voltage transformer. To reduce the leakage of harmonic current from the transformer to the neutral line in a 3-phase 4-wire electrical system, the result is a saving of 15 to 35 percent on electricity costs. ------------ OCR, a harmonic attenuator and loss reducer in a 3-phase 4-wire electrical system, was invented and developed to reduce the leakage of electric current and harmonic current or electricity with a frequency greater than 50H2 from the transformer flowing unstable to the neutral line in a 3-phase 4-wire electrical system. This is caused by the use of unbalanced electric current and the use of non-linear loads. The characteristics of the device are a plastic box with a coil inside. The coil is made of copper conductor wire wound on a 3-layer flexible steel pipe back and forth. Inside the flexible steel pipe is a ring-shaped ferrite core wound with a full layer of 19-gauge varnished copper wire (S.W.G.), arranged closely together in rows of 3 cores. Each core is independent and not connected to each other. But the ends of the copper wire are connected to each other only in the core itself. To allow electric current to flow Both ends of the coil are located outside the box and connected in parallel with the neutral wire coming from the low-voltage transformer. They are installed on the neutral wire closest to the transformer. In a three-phase, four-wire system, harmonic attenuators generate a current that is in the opposite direction to the current and harmonics leaking in the neutral wire, or negative feedback. This reduces the current and harmonics leakage. The result is an improved 50Hz side signal, more efficient linear loads, a 15 to 35 percent reduction in current flow, and reduced maintenance costs for electrical machinery.