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Circuit breaker locator

A circuit breaker and circuit technology, applied in the field of test equipment for circuit breakers

Inactive Publication Date: 2011-03-30
JOHN FLUKE MFG CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] While arrangements for locating circuit interrupters associated with particular branch circuits of an electrical distribution system have met with some degree of commercial success, there is a need to improve reliability and ease of use to minimize the presence of false indications

Method used

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Examples

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Embodiment Construction

[0028] figure 1 A simplified wiring diagram depicting a portion of a switchboard 10 having three power line buses 20 , 30 and 40 and a plurality of circuit interrupters 12 , 14 , 22 , 24 , 32 and 34 is shown. In the configuration shown, circuit interrupters 12 and 14 form a circuit path between bus bar 20 and the "hot" leads of branch circuits 42 and 44; and the circuit interrupters 32 and 34 form a circuit path between the bus bar 40 and the hot leads of the branch circuits 62 and 64. like figure 1 As shown, each of the branch circuits 42, 44, 52, 54, 62, and 64 includes a neutral lead 70 that, along with the hot lead of the branch circuit, supplies power to a load connected to the respective branch circuit. Examples of loads that may be connected to each branch circuit include permanently wired lighting systems, lamps and other appliances that may be removably connected to the branch circuit through conventional electrical receptacles and may be connected to the branch cir...

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PUM

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Abstract

An arrangement that includes a transmitter unit and a receiver for locating a wire or a circuit interrupter associated with a selected branch circuit of a power distribution system. The transmitter is electrically interconnected with the selected branch circuit and produces a sequence of current pulses in a branch circuit that is to be traced to locate an associated circuit interrupter. Each current pulse is of a predetermined duration, a predetermined rise time, and a predefined fall time, which in one embodiment is equal to the current pulse rise time. The receiver is a handheld unit that is positioned in close proximity with the various circuit interrupters of the power distribution system and provides an indication that the desired wire or circuit interrupter has been located upon detecting current pulses that are with a predefined pulse duration, pulse separation and amplitude.

Description

[0001] related application [0002] This application claims priority to U.S. Patent Application No. 12 / 537873, filed August 7, 2009, entitled "AC VOLTAGEPHASE DISCRIMINATOR FOR CIRCUIT BREAKERLOCATORS" and related to concurrently filed U.S. Patent Application No. 12 / 537878, at The entire contents of both are hereby incorporated by reference. technical field [0003] The present invention relates generally to electrical test equipment for tracing conductors and identifying circuit components. More particularly, the present invention relates to testing equipment for identifying circuit interrupters (eg, circuit breakers or fuses) associated with particular branch circuits of an electrical wiring system. Background technique [0004] Electrical systems in homes, offices, and other buildings contain multiple branch circuits originating from one or more distribution panels. To avoid overload currents, each branch circuit contains a circuit interrupter (circuit breaker or fuse) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01R19/04
CPCG01R31/023G01R31/086G01R31/3277Y04S10/522G01R31/041G01R31/60G01R31/67Y04S10/52
Inventor M·F·加拉范
Owner JOHN FLUKE MFG CO INC