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Laboratory isolation power supply insulation fault positioning system

A technology of insulation fault and isolated power supply, which is applied in the direction of power supply test and dielectric strength test, which can solve the problems of large leakage current threat, inconvenient maintenance, electric shock casualties of students, etc., to protect personal safety and equipment safety, and ensure the continuity of power supply performance and ensure the effect of safe power supply

Pending Publication Date: 2018-04-03
MIANYANG MOSHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the wide application of various electronic equipment in school laboratories, the threat caused by the leakage current is also increasing. During follow-up maintenance, it is also difficult to find the damaged position, which brings great inconvenience to maintenance

Method used

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  • Laboratory isolation power supply insulation fault positioning system
  • Laboratory isolation power supply insulation fault positioning system

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The main structure of this embodiment, such as figure 1 , figure 2 As shown, a laboratory isolation power supply insulation fault location system is characterized in that it includes an isolation transformer for the entire power supply and a test bench for students to conduct experiments; the isolation transformer is connected in series with an insulation monitor and an external alarm. The external alarm is also connected with an alarm display, the test bench is connected with an experimental control room, and the test console is connected with an insulation monitor; the isolation transformer is also connected in series with an insulation fault tester and an insulation fault locator through a current transformer; The test bench includes a number of load circuits connected in parallel with the insulation fault tester. The load circuits are also provided with switches and positioning transformers. The positioning transformers on the load circuits are all connected to the...

Embodiment 2

[0032] In this embodiment, on the basis of the foregoing embodiments, it is further defined that the power supply circuit used is a three-phase power supply, and the isolation transformer used is an SG three-phase transformer. Other parts of this embodiment are the same as those of the foregoing embodiment, and will not be repeated here.

Embodiment 3

[0034] In this embodiment, on the basis of the foregoing embodiments, it is further defined that the power supply circuit used is a single-phase power supply, and the isolation transformer used is a DG three-phase transformer. Other parts of this embodiment are the same as those of the foregoing embodiment, and will not be repeated here.

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Abstract

The invention discloses a laboratory isolation power supply insulation fault positioning system. The system comprises an isolation transformer and an experiment table. The isolation transformer is successively connected in series with an insulation monitor and an external connection alarm. The external connection alarm is also connected to an alarm display instrument. The experiment table is connected to an experiment control chamber. An experiment control bench is connected to the insulation monitor. The isolation transformer is also successively connected in series with an insulation fault tester and an insulation fault positioning instrument through a current transformer. The experiment table comprises several load circuits connected in parallel with the insulation fault tester. The load circuits are provided with switches and positioning mutual inductors. The positioning mutual inductors of the load circuits are connected to the insulation fault positioning instrument. In the invention, when a fault is discovered, an alarm is emitted rapidly and positioning is performed so that a safe experiment platform is provided for an experimenter; personal safety and equipment safety areprotected; and the system has a certain improvement effect on teaching.

Description

technical field [0001] The invention relates to the technical field of laboratory circuit protection equipment, in particular to a laboratory isolation power insulation fault location system. Background technique [0002] The laboratory is an important place for the school's experimental teaching and scientific research, and the safety of the laboratory is the basic guarantee for the normal operation of the school's experimental teaching. In particular, electrical laboratories, as an important place for schools to cultivate talents, are more dangerous than other basic laboratories, and their safety work cannot be ignored. [0003] At present, in order to prevent and reduce the occurrence of safety accidents in school laboratories, a number of laws, regulations and rules on safety management in colleges and universities have been issued in succession. Most of the electrical protection devices in the laboratory use air switches and insulating rubber pads, which can play a pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/40G01R31/12
CPCG01R31/12G01R31/40
Inventor 蒋旺林赵平段守富
Owner MIANYANG MOSHI TECH CO LTD
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