ROGOWSKI TORUS-TYPE CURRENT MEASUREMENT SENSOR, AS WELL AS PROTECTION AND MEASUREMENT APPARATUS AND ELECTRIC CIRCUIT BREAKER COMPRISING SUCH SENSOR Russian patent published in 2021 - IPC G01R19/00 G01R15/18 

FIELD: electric elements.

SUBSTANCE: according to the invention, a Rogowski coil-type current measurement sensor is created, including a carrying element (1) made of non-magnetic materials and a secondary winding (5) wound on the carrying element (1) in order to produce an electrical signal characterising the current flowing in the conductor passing through the space inside the torus. The carrying element (1) is made essentially of a rigid plastic moulded material and includes at least one outer cut (2, 3) distributed along the length of the carrying element. The cut (2) includes at least two grooves (3) separated by a divider (4). Also created are a protective and measuring apparatus and an electric circuit breaker comprising such current sensor.

EFFECT: creation of a highly precise Rogowski coil sensor which can be manufactured commercially and is practically insensitive to temperature fluctuations, with a protection apparatus and a breaker comprising such sensor.

12 cl, 6 dwg