Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Automatic insulation detection system of frequency conversion motor

A variable frequency motor, automatic detection technology, applied in the direction of motor generator testing, testing dielectric strength, etc., can solve the problems of motor insulation changes, difficult to find, etc., achieve the effects of avoiding accidents, wide application range, and improving technical management level

Active Publication Date: 2015-12-16
BEIJING SHOUGANG INT ENG TECH
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic detection system for the insulation of variable frequency motors, which solves the problem that it is difficult to detect when the insulation of the motor changes

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
  • Automatic insulation detection system of frequency conversion motor
  • Automatic insulation detection system of frequency conversion motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Set the motor to be detected on the screen of the PLC control and data acquisition system and the database 6, through the insulation detection manual automatic transfer switch 3, the main circuit operation and insulation detection switching safety contactor 4 of the frequency conversion motor, and the motor insulation detection working contactor 5. The conduction of the motor insulation detection circuit, the motor to be detected is detected by the motor leakage current signal acquisition device 1, and the detected signal is converted into an analog signal that can be uploaded by the measurement signal transmitter 2, and uploaded to the PLC control and The data acquisition system and the database 6 judge the acquisition signals through the PLC control and the data acquisition system and the database 6 . When the motor insulation detection value is normal, the PLC control and data acquisition system and the database 6 send a motor normal signal to the PLC system of the pr...

Embodiment 2

[0034]Set the motor to be detected on the screen of the PLC control and data acquisition system and the database 6, through the insulation detection manual automatic transfer switch 3, the main circuit operation and insulation detection switching safety contactor 4 of the frequency conversion motor, and the motor insulation detection working contactor 5. The conduction of the motor insulation detection circuit, the motor to be detected is detected by the motor leakage current signal acquisition device 1, and the detected signal is converted into an analog signal that can be uploaded by the measurement signal transmitter 2, and uploaded to the PLC control and The data acquisition system and the database 6 judge the acquisition signals through the PLC control and the data acquisition system and the database 6 . If there is a problem with the insulation of the motor, the PLC control and data acquisition system and the screen of the database 6 will send out an audible and visual al...

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, which belongs to the electric control field, provides an automatic insulation detection system of a frequency conversion motor. A motor leakage current signal acquisition device, a measurement signal transmitter, an insulation detection hand-operated and automatic change-over switch, a frequency conversion motor main loop operation and insulation detection switching safety contactor, and a motor insulation detection work contactor are installed in a field motor control cabinet. When a motor insulation resistance needs to be detected automatically, the insulation detection hand-operated and automatic change-over switch is changed into an automatic state and circuit breakers QF of the groups of electric machines for roller are turned off; when detection data alarming is carried out, the insulation detection hand-operated and automatic change-over switch is changed into a hand-operated state and circuit breakers QF of single motor loops are turned off one by one. The system has the following advantages: the normal using functions of the original production line are not affected; the equipment checking and maintenance time can be reduced; and the production losses caused by a motor insulation accident can be reduced.

Description

technical field [0001] The invention belongs to the technical field of electrical control, and in particular relates to an automatic insulation detection system of a variable frequency motor. It is suitable for motor insulation detection of various voltage levels and different capacities. It can make statistics on the insulation of the motor, find the change rule of the motor insulation according to the statistical data of the motor insulation, and do a good job of maintenance and inspection of the motor with gradually reduced insulation, reducing the normal production of the production line. In the process, due to the sudden damage of the motor insulation, the parking accident rate is avoided, and the huge loss to the production caused by this is avoided. Background technique [0002] In the metallurgical industry, especially the hot rolling production line, there are many auxiliary drive motors. Taking hot rolling as an example, there are more than 790 auxiliary drive mot...

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): G01R31/12G01R31/34
Inventor 吕冬梅刘燕王凤阁张玉杰刘克清周军刘自春
Owner BEIJING SHOUGANG INT ENG TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com