CIRCUIT BOARD METER FOR CIRCUIT BREAKERS
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Abstract
A current measuring device for circuit breakers with an improved electronic circuit arrangement by way of arrangement and method for displaying electrical line current by a circuit breaker wherein measurements are made by at least one current transformer. Indications of the magnitude of electrical current are displayed by at least one LED and by the intensity of illumination by each LED. The current measuring device is placed onto a circuit breaker wherein at least one LED of the improved circuit is made accessible by sight at the front face of the current measuring device attached to the circuit breaker. A current transformer is located inside the current measuring device attached to the circuit breaker for measuring the current flowing through the conductor applied to the circuit breaker. The current transformer supplies the improved electronic circuit with a reduced electrical current in proportion to the electrical current flowing through the conductor displaying the magnitude of the current by strength of illumination by at least one LED.
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Citations
34 Claims
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1-23. -23. (canceled)
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24. A current measuring device for circuit breakers , the current measuring device comprising:
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current transformer, analogue electronic circuit , further comprising; transistors, resistors, and at least one indicating LED, characterized in that the current measuring device is powered by the current transformer to produce the operating power to the indicating LEDs, said current transformer is placed around a wire or a conductor and produces a reduced current proportional to the current flowing through the wire or conductor; and
wherein the current measuring device is configured to indicate a distinctive current state by magnitude of illumination by at least one LED which illuminates in proportion to the magnitude of the current passing through the current transformer.- View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification