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Isolation passive high-voltage electrified indication device

A high-voltage live, indicating device technology, used in measuring devices, voltage/current isolation, measuring electrical variables, etc., can solve the problem of insufficient safety, and achieve high safety, high warning, and long-term practical reliability.

Active Publication Date: 2014-03-12
HANGZHOU SUPER ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution is powered by batteries, which need to be replaced regularly, and the LED display unit is directly connected to the high-voltage line through the detection unit, which is not safe enough

Method used

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  • Isolation passive high-voltage electrified indication device

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Embodiment

[0024] Embodiment: a kind of isolated passive high-voltage charged indicating device of this embodiment, such as figure 1 As shown, it includes an energy transmitting end 13 and an energy receiving end 14 . The energy transmitting end 13 includes a high-voltage pole plate 1, an intermediate pole plate 2, a first rectification and voltage stabilization circuit, and a transmitting circuit. The high-voltage pole plate 1 is connected to the high-voltage wire in the switch cabinet, and the middle pole plate 2 is arranged in parallel with the high-voltage pole plate 1. form a capacitive structure.

[0025] The first rectification and voltage stabilization circuit includes a first bridge rectifier 4, a first energy storage capacitor C3 and a first voltage stabilizing module 5, and the positive pole and negative pole of the input terminal of the first bridge rectifier 4 are respectively connected to the high-voltage plate 1 and the middle plate 2. The positive pole of the output term...

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Abstract

The invention discloses an isolation passive high-voltage electrified indication device, comprising am energy emitting end and an energy receiving end; the energy emitting end comprises a high-voltage polar plate, a middle polar plate, a first rectifying voltage stabilizing circuit and an emission circuit; the high-voltage polar plate is connected with a high-voltage lead in a switch cabinet; the middle polar plate and the high-voltage polar plate are correspondingly arranged in parallel to form a capacitor structure. The energy receiving end comprises a receiving circuit, a second rectifying voltage stabilizing circuit, a control module and an alarm circuit; the first rectifying voltage stabilizing circuit performs rectifying and voltage stabilizing on the current from the high-voltage polar plate and the middle polar plate and outputs the current to the emission circuit; the emission circuit transmits the energy to the receiving circuit in a wireless electromagnetic wave coupling mode; the second rectifying and voltage stabilizing circuit performs rectifying and voltage stabilizing on the energy received by the receiving circuit and provides the energy to the subsequent control module and the alarm circuit. Air isolation is adopted between the emission circuit and the receiving circuit. The safety is good. The scheme is suitable for the electrified detection on a high-voltage switch cabinet.

Description

technical field [0001] The invention relates to a monitoring and indicating device for a high-voltage switchgear, in particular to an isolated passive high-voltage live indicating device with high safety. Background technique [0002] The charging indication system is generally composed of charging sensors and indicators. At present, contact-type high-voltage charging display devices and inductive high-voltage charging display devices are mostly used. The former is to directly obtain weak signals from the high-voltage circuit by means of capacitive voltage division. The charged sensor is directly connected to the primary high voltage and the secondary low voltage, so it is called a contact high-voltage live display. Its insulating material will age and deteriorate after long-term work. Contamination will also affect its reliability; the latter uses an antenna placed within a few centimeters of the primary high-voltage circuit, and uses induction to obtain the live signal of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/155G01R15/18
Inventor 滕明茂赵国栋吴孝兵
Owner HANGZHOU SUPER ELECTRONICS TECH
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