Current transformer and circuit breaker

• Main Authors: CAI JIWEN, TAN SAI, JIA JUN, LI DE, CHENG JIAN, ZHENG WENJUAN
• Format: Patent
• Language: Chinese; English
• Published: 08.10.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The invention relates to the field of electrical appliances, and particularly relates to a current transformer and a circuit breaker. The current transformer comprises an air-core coil and a shieldingcover arranged outside the air-core coil, wherein the air-core coil includes a coil framework, an inner layer winding wound on the coil framework and an outer layer winding wound outside the inner layer winding, and the inner layer winding and the outer layer winding are opposite in winding direction. Compared with the prior art, the current transformer provided by the invention has current sampling and power taking functions, the air-core coil adopts a double-layer winding mode, the double layer windings are wound on the coil framework, and the number of turns of the winding and the windingdirection can be flexibly controlled. Firstly, the number of turns of the winding is increased, and the induction accuracy is improved; and secondly, the signal interference in the vertical directioncan be effectively removed