Mixed current sensor and method for fitting said sensor
First Claim
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1. A mixed current sensor secured within a case, the case comprising a base including a first housing and a second housing, the mixed current sensor comprising:
- a magnetic current sensor having a coil wound around a magnetic circuit;
a current measuring device comprising a Rogowski coil arranged in such a way that a primary circuit of the magnetic sensor corresponds to the primary circuit of said current measuring device, the magnetic current sensor and the current measuring device being positioned inside walls of the second housing and being covered by a second cover on outer edges of the walls of the second housing;
an electronic-printed circuit that acquires and measures electric current, said electronic printed circuit being supplied with the electric current from the coil of the magnetic current sensor, being positioned inside walls of the first housing and being covered by a first cover on outer edges of the walls of the first housing; and
a linking cassette includinga first fixing arranged to position and secure said linking cassette by clip-fastening the linking cassette onto the current measuring device without soldering;
a second fixing arranged to position and secure said linking cassette and the current measuring device by clip-fastening the linking cassette within the case without soldering; and
electric pins respectively connected to the Rogowski coil and to the electronic printed circuit to acquire and measure the electric current, whereinelectric tracks are securedly attached to the base and electrically soldered onto the coil of the magnetic current sensor, and the electric tracks connect the magnetic current sensor to the electronic printed circuit.
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Abstract
The invention relates to a mixed current sensor comprising in a case:
- a magnetic current sensor;
- a current measuring device comprising a Rogowski coil arranged in such a way that a primary circuit of the magnetic sensor corresponds to the primary circuit of said current measuring device,
- electronic means for performing acquisition and measurement of the electric current.
Said sensor comprises a linking cassette comprising
- first fixing means arranged to position and secure said cassette by clip-fastening onto the measuring device;
- second fixing means arranged to position and secure said cassette and the measuring device by clip-fastening onto the case.
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Citations
9 Claims
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1. A mixed current sensor secured within a case, the case comprising a base including a first housing and a second housing, the mixed current sensor comprising:
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a magnetic current sensor having a coil wound around a magnetic circuit; a current measuring device comprising a Rogowski coil arranged in such a way that a primary circuit of the magnetic sensor corresponds to the primary circuit of said current measuring device, the magnetic current sensor and the current measuring device being positioned inside walls of the second housing and being covered by a second cover on outer edges of the walls of the second housing; an electronic-printed circuit that acquires and measures electric current, said electronic printed circuit being supplied with the electric current from the coil of the magnetic current sensor, being positioned inside walls of the first housing and being covered by a first cover on outer edges of the walls of the first housing; and a linking cassette including a first fixing arranged to position and secure said linking cassette by clip-fastening the linking cassette onto the current measuring device without soldering; a second fixing arranged to position and secure said linking cassette and the current measuring device by clip-fastening the linking cassette within the case without soldering; and electric pins respectively connected to the Rogowski coil and to the electronic printed circuit to acquire and measure the electric current, wherein electric tracks are securedly attached to the base and electrically soldered onto the coil of the magnetic current sensor, and the electric tracks connect the magnetic current sensor to the electronic printed circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for fitting a mixed current sensor into a case, the mixed current sensor comprising a magnetic current sensor having a coil wound around a magnetic circuit, a current measuring device having a Rogowski coil, an electronic printed circuit that acquires and measures electric current, and a linking cassette including a first fixing, a second fixing and electric pins, the case comprising a base including a first housing for the electronic printed circuit and a second housing for the magnetic current sensor and the current measuring device, said method comprising:
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fixing the linking cassette on an insulating shell of the current measuring device without soldering, wherein the Rogowski coil is composed of the insulating shell on which metal wires are wound, said insulating shell comprising a clip-fastener that collaborates with the first fixing of the linking cassette, and the wires of the coil of the current measuring device being electrically connected to the electric pins of the linking cassette; positioning an assembly formed by the linking cassette and a coiled shell in the first housing of the base of the case, two centering pins of the linking cassette enabling positioning and securing of the linking cassette and of the current measuring device by clip-fastening the assembly onto the case without soldering; fixing the magnetic current sensor in the base of the case; electrically soldering electric tracks onto the coil of the magnetic current sensor, the magnetic current sensor being connected to the electronic printed circuit for acquiring and managing the electric current by the electric tracks securedly attached to the base; positioning an electronic printed circuit board of the electronic printed circuit inside the walls of the first housing; soldering the electric pins of the linking cassette and the electric pins of the electric tracks onto the electronic printed circuit board of the electronic printed circuit; positioning and soldering a first cover on outer edges of walls of the first housing; and positioning and soldering a second cover on outer edges of walls of the second housing of the base. - View Dependent Claims (9)
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Specification