Devices for active overvoltage protection

A protection device, overvoltage technology, applied in the direction of emergency protection circuit device for limiting overcurrent/overvoltage, overvoltage protection resistor, protection reacting to overvoltage, etc. Safe failure modes, cannot be designed to absorb, etc.

Active Publication Date: 2022-04-15
RIPD知识产权发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As provided above, means for protecting equipment from excess voltage or current spikes (transient overvoltage and surge current) may include products such as energy absorbers, which may be based on varistors, including for example metal oxide Varistors (MOVs) and / or silicon carbide varistors, and the energy absorber may not have a safe end-of-life mode of operation
Additionally, such devices may not provide protection at voltage levels approaching the operating voltage of the device
Further, SPD designs may not provide protection at voltage levels near the nominal system voltage and may not be designed to absorb as much energy as an energy absorber
Combinations of varistors and thyristors may not have a safe failure mode and will not protect against surge currents and transient overvoltages without an external SPD

Method used

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  • Devices for active overvoltage protection
  • Devices for active overvoltage protection
  • Devices for active overvoltage protection

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Embodiment Construction

[0079] Hereinafter, the invention will now be described more fully with reference to the accompanying drawings in which illustrative embodiments of the invention are shown. In the drawings, the relative sizes of some regions or features may be exaggerated for clarity. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will to fully convey the scope of the invention to those skilled in the art.

[0080] It will be understood that when an element is referred to as being "coupled" or "connected" to another element, it can be directly coupled or connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly coupled" or "directly connected" to another element, there are no intervening elements present. Like reference nume...

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PUM

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Abstract

The invention relates to a device for active overvoltage protection, and specifically discloses a circuit protection device. The circuit protection device includes an active energy absorber coupled between two power lines in an electrical distribution system and configured to selectively conduct a fault current in response to an overvoltage condition. The active energy absorber includes: an overvoltage protection module including two thyristors connected in antiparallel to each other; and a varistor connected in series with the overvoltage protection module. The series circuit including the varistor and the overvoltage protection module is connected between the power lines.

Description

technical field [0001] The present invention relates to circuit protection devices, and more particularly to overvoltage protection devices and methods. Background technique [0002] Excess voltage or current is often imposed across service lines that deliver electrical power to residential and commercial and industrial facilities. For example, such excessive voltage or current spikes (transient overvoltages and inrush currents) can be caused by lightning strikes. Facilities that are particularly affected by the events described above are telecommunications dispatch centers, hospitals, and other facilities where equipment damage from overvoltage and / or current surges and resulting downtime can be very costly. [0003] Typically, a surge protective device (SPD) is used to protect sensitive electronic equipment from transient overvoltages and surge currents. For example, simply refer to figure 1 , figure 1 is a system that includes conventional overvoltage and surge protec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04
CPCH02H9/04H02H9/044H02H9/005H02H9/008H02H9/041H02H9/043H01C7/12H02H3/22
Inventor G.科斯塔基斯Z.G.波利蒂斯F.埃克塞帕帕斯A.乔罗佐娄C.普雷韦兹亚诺斯
Owner RIPD知识产权发展有限公司
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