Check patentability & draft patents in minutes with Patsnap Eureka AI!

Direct-current electric switch safety detection device

A technology of safety detection and electrical switching, applied in the direction of circuit breaker testing, etc., can solve the problem that the validity cannot be known in time, and achieve the effect of simple structure

Pending Publication Date: 2018-09-18
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the effectiveness detection of the switch, most of them are checked manually by using instruments, but for the DC switch running online, its effectiveness cannot be known in time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Direct-current electric switch safety detection device
  • Direct-current electric switch safety detection device
  • Direct-current electric switch safety detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Such as figure 1 The DC electrical switch safety detection device includes an oscillating circuit, a display circuit and a power supply circuit. The input terminals of the oscillating circuit are respectively connected to the input and output of the switch to be tested, the output terminals of the oscillating circuit are connected to the display circuit, and the power supply circuits are respectively It is connected with the oscillation circuit and the display circuit.

[0020] Such as figure 2 , where the logic part of the inverter uses a four-NAND integrated circuit IC chip 74HC00, where one end of the capacitor C1 is connected to the switch input to be tested, and the other end is connected to R1, IC pins 1A and 1B respectively; one end of the resistor R1 is connected to the IC lead pins 1A, 1B, and the other end is connected to IC pins 1Y, 2A, and 2B; one end of C2 is connected to the output of the switch to be tested, and the other end is connected to IC pins 2Y,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a direct-current electric switch detection device. The device comprises an oscillating circuit, a display circuit and a power supply circuit. The two input ends of the oscillating circuit are respectively connected with the two ends of a to-be-tested switch. When the switch is closed, the oscillating circuit forms a complete loop. At this time, the oscillating circuit can output square waves, sine waves and waves of other waveforms. The output waveform of the oscillating circuit serves as a control signal of the display circuit, and the state of the switch can be displayed visually. The power supply circuit is used for providing a power supply for the oscillating circuit and the display circuit. The device is simple in structure, safe and practical. The device can beused for testing the effectiveness of the direct-current electric switch in the online or offline manner.

Description

technical field [0001] The invention relates to the technical field of electronic measurement, and more specifically, to a safety detection device for a DC electric switch. Background technique [0002] In recent years, the consequences of power outages have become increasingly serious. Large-scale power outages are mostly caused by hidden faults in relay protection. According to data, about 75% of major power outages in the world are related to incorrect actions of protection systems. Hidden faults of relay protection refer to faults that have no influence on the system during normal operation, but when some parts of the system change, such faults will be triggered, resulting in large-scale faults. [0003] The digital input and output system of relay protection is an important part of the substation, which can complete various protection functions such as outlet tripping and signal alarming. The DC switching fault of relay protection is a recessive fault. When the system ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 黄国平倪伟东郭小华廖峰黄华斌黄锷王跃强
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com