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An undervoltage protection potential combine device

A combined device and undervoltage protection technology, applied in the direction of emergency protection circuit device, circuit device, emergency protection device with automatic disconnection, etc. problems to ensure safe operation

Inactive Publication Date: 2019-01-15
XIAN FUBANG TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overvoltage and undervoltage are easy to damage electrical equipment
However, the circuit protection equipment is not perfect at present, it cannot effectively protect the electrical equipment, and it cannot reliably cut off the power supply when overvoltage and undervoltage occur.

Method used

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  • An undervoltage protection potential combine device

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Embodiment Construction

[0013] The present invention is described in further detail below in conjunction with accompanying drawing:

[0014] see figure 1 , The undervoltage protection potential combination device of the present invention includes a rectification unit PART1, a monitoring unit PART2, a voltage stabilizing reference unit PART3, a comparison unit PART4 and a protection unit PART5 connected in sequence. The rectifier unit PART1 transforms the alternating current into a direct current proportional to the supply voltage,

[0015] The monitoring unit PART2 is composed of a capacitor C3, a resistor R2, a potentiometer RA1, a potentiometer RA2, and a diode D6. The resistor R2, the potentiometer RA1 and the potentiometer RA2 are connected in series in sequence, the tap end of the potentiometer RA2 is grounded, and the resistor One end of R2 is connected to the high potential of the output end of the rectifier unit PART1, and one end of the potentiometer RA1 is connected to the low potential of...

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PUM

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Abstract

The invention relates to an undervoltage protection potential combination device, which is characterized in that the undervoltage protection potential combination device comprises a rectifying unit, amonitoring unit, a voltage stabilizing reference unit, a comparison unit and a protection unit connected in sequence. The under-voltage protection potential combination device of the invention can beapplied to both industrial and civil electric equipment, and can reliably cut off the power supply to protect the subsequent electric equipment at the time when the over-voltage and the under-voltageoccur, thereby ensuring the safe operation of the electric equipment under the adverse environment of industrial or civil power supply.

Description

technical field [0001] The invention belongs to the technical field of electric appliance protection, in particular to an undervoltage protection potential combination device. Background technique [0002] In the prior art, many industrial and civil power supply environments are harsh. Overvoltage and undervoltage are easy to damage electrical equipment. However, the circuit protection equipment is still not perfect enough to effectively protect electrical equipment, and cannot reliably cut off the power supply when overvoltage or undervoltage occurs. [0003] The invention relates to an electronic undervoltage protection potential combination device, which can reliably cut off the power supply to protect subsequent electrical equipment when overvoltage and undervoltage occur. Contents of the invention [0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide an undervoltage protection potential combinatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/20H02H3/24
CPCH02H3/207H02H3/24
Inventor 杨德林
Owner XIAN FUBANG TECH INDAL