Cable breakpoint fault rapid searching instrument and searching method thereof

A breakpoint fault and cable technology, applied in the field of cable breakpoint fault quick finder, can solve problems such as disconnection and waste, and achieve the effects of reducing cost, convenient operation and improving maintenance speed

Inactive Publication Date: 2011-01-26
NANJING MEISHAN METALLURGY DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the cable is frequently retracted and retracted on the ground, it is easy to cause disconnection. Even if a small wire of 6mm2 is broken, the entire cable needs to be replaced, causing a lot of waste.

Method used

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  • Cable breakpoint fault rapid searching instrument and searching method thereof
  • Cable breakpoint fault rapid searching instrument and searching method thereof
  • Cable breakpoint fault rapid searching instrument and searching method thereof

Examples

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Embodiment Construction

[0024] Such as figure 1 As shown, a kind of cable breakpoint fault fast finding instrument described in the embodiment of the present invention includes a clamp-type housing and a circuit board. The circuit board includes an integrated circuit, a resistor, a capacitor, a triode and a light-emitting diode. A pin, resistors R1, R2, capacitor C1 and an integrated circuit form an integrated amplifier circuit, resistor R3 is a sensitivity adjustment resistor, resistor R5 is a bias resistor for the base of the triode, and resistor R6 is a current-limiting resistor for a light-emitting diode. battery and sensors.

[0025] Such as figure 2 Shown, a kind of cable breakpoint fault fast finding method, it comprises the following steps:

[0026] 1) Disconnect the power supply: disconnect the circuit breaker 3 in the relay power supply box 6 for supplying power to the reel and trolley motor;

[0027] 2) Judgment: use a multimeter to measure the resistance of the motor at the connection...

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PUM

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Abstract

The invention relates to a cable breakpoint fault rapid searching instrument and a method thereof. The method comprises the following steps of, firstly, switching off a breaker which supplies power to a drum and a trolley motor in a transfer power box; secondly, measuring a motor resistance by using a universal meter at the wiring part at the lower terminal of the breaker, and judging which a core wire in a cable is a broken wire; thirdly, connecting the broken wire to a live wire at the lower terminal of an air switch through a lead at the wiring part at the lower terminal of the breaker; fourthly, connecting the other core wires to a ground wire through leads at the wiring part at the lower terminal of the breaker without disassembling a load; fifthly, opening the air switch to transport a detection current, sleeving a jaw of the searching instrument on the cable, and detecting from the power supply end to the load end along the cable; and sixthly, disconnecting the wire broken part and carrying out breakpoint butt joint. The invention has the advantages of simpleness, practicability and convenient operation and can rapidly verify the accurate position of a breakpoint without damaging the cable. The cable can be used again through breakpoint butt joint and banding, thereby lowering the cost and also enhancing the maintenance speed.

Description

technical field [0001] The invention relates to an instrument and method for quickly finding cable breakpoint faults. Background technique [0002] At present, there are a lot of cable disconnection detection equipment at home and abroad, which are generally expensive and complicated to operate. There are also some low-cost anti-jamming devices that are poor, and sometimes display falsely when they touch the hand or the ground. Not suitable for on-site operations in steel mills. [0003] At present, ground vehicles in steel mills use 6-core unshielded power cables. The 3-core 35mm2 wire is for the drive motor (frequency conversion control); the 3-core 6mm2 wire is for the cable reel motor. Because this cable is frequently retracted and retracted on the ground, it is easy to cause disconnection, even if a small wire of 6mm2 is broken, the whole cable needs to be replaced, causing a lot of waste. Contents of the invention [0004] The purpose of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R31/02
Inventor 严连才周龙伢邓海霞花金芳
Owner NANJING MEISHAN METALLURGY DEV
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