Contact signal collection circuit for online verifying gas density relay on spot
A density relay and signal acquisition technology, applied in the electric power field, can solve problems such as potential safety hazards, hazards, flashovers, etc., and achieve the effect of ensuring safety
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0058] figure 1 It is a control circuit schematic diagram of a contact signal acquisition circuit (collector) 6 used for on-site on-line calibration of gas density relays for high-voltage electrical equipment. Such as figure 1 As shown, the contact signal acquisition circuit (collector) is connected together with the gas density relay 1 and the online verification device 7 on the electrical equipment. The contact signal acquisition circuit (collector) 6 of this embodiment includes a first relay J1 and a second relay J2. The first relay J1 is provided with normally closed contacts J11 and J12, and the normally closed contacts J11 and J12 are connected in series in the contact signal control loop; the second relay J2 is provided with normally open contacts J21 and J22, and the normally open contacts J21 and J22 are provided. Contacts J21 and J22 are connected to contact P of gas density relay 1 J It is also possible that the first relay J1 and the second relay J2 are integrat...
Embodiment 2
[0066] Such as figure 2 As shown, the difference between the present embodiment and the first embodiment is that a normally open contact J13 is added between the normally closed contacts J11 and J12. In the non-calibration state, the contact P J It is a normally closed density relay, the normally closed contacts J11 and J12 are closed, while J13 is open, and the normally open contacts J21 and J22 are open. In the verification state, the normally open contact J13 of the contact signal acquisition circuit (collector) 6 closes the contact signal control loop, while the normally closed contacts J11 and J12 are disconnected, that is, the contact P of the gas density relay 1 is cut off. J Connection with the contact signal control circuit; at the same time, the normally open contacts J21 and J22 are closed or automatically closed under the control of the online verification device 7, and the contact P of the gas density relay 1 J The normally open contacts J21 and J22 of the seco...
Embodiment 3
[0068] Such as image 3 As shown, the contact signal acquisition circuit (gatherer) 6 of the present embodiment includes a photocoupler OC1 and a resistor R1, and the photocoupler OC1 includes a light emitting diode and a phototransistor; the anode of the light emitting diode and the Contact P of gas density relay 1 J Form a closed loop in series; the emitter of the phototransistor is grounded; the collector of the phototransistor is connected to the on-line verification device 7 as the output terminal out6 of the signal acquisition circuit (gatherer) 6, and the phototransistor The collector is also connected to the power supply through the resistor R1.
[0069] Through the above circuit, the contact P of the gas density relay 1 can be easily known through the high and low levels output by the output terminal out6 of the contact signal acquisition circuit (collector) 6. J is open or closed. Specifically, when the joint P J When closed, the closed circuit is energized, the ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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