Surge protection system
A technology of surge protection and surge protector, applied in emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, electrical components, etc., to achieve the effect of low response characteristics and large flow capacity
Active Publication Date: 2012-10-17
SEARI ELECTRIC TECH
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Problems solved by technology
[0022] In addition, although the operating voltage of the multi-point spark-triggered surge protector device can be set to a lower level, due to the limitation of the manufacturing technology of the micro-trigger gap and the need for a certain arc tolerance, it takes a certain time for the generation of the trigger arc
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[0044] An embodiment of the present invention proposes a surge protection system, which includes a surge protector and a bypass connected in parallel with the surge protector, wherein the surge protector is triggered by a multi-point spark-triggered surge protector or multiple series-connected surge protectors The conduction voltage of the bypass system connected in parallel with the surge protector should be equal to or higher than the conduction voltage of the non-linear resistance of the trigger circuit in the multi-point spark trigger surge protection device , but also to meet the needs of the system operating voltage. The best solution is that the conduction voltages are the same, but not lower than the maximum continuous voltage of the system, namely:
[0045] u 多 =U 旁 =U 触发 ≥U 系统
[0046] In the formula,
[0047] u 多 Indicates the maximum continuous operating voltage of a surge protector consisting of one multi-point spark-triggered surge protective device or mul...
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The embodiment of the invention discloses a surge protection system which comprises a surge protector and a bypass system, wherein the surge protector comprises a multipoint spark-triggering surge protection device, or the surge protector comprises a plurality of multipoint spark-triggering surge protection devices which are connected in series; the bypass system and the surge protector are connected in parallel, and the break-over voltage of the bypass system is equal to or higher than that of a nonlinear resistor of a triggering circuit in the multipoint spark-triggering surge protection device. The technical scheme of the invention can have the characteristics of lower voltage protection level values, MOV-level response characteristics and large through-current capability of a switch type surge protector, and the requirements of the technical scheme can be achieved through the zero-distance matched use of the multipoint spark-triggering surge protection device and a post voltage-limiting type surge protector.
Description
technical field [0001] The present invention relates to the field of low-voltage electrical appliances, more specifically, to a surge protection system for protecting low-voltage power distribution systems and electrical equipment thereof. The neutral line) plays the role of equalizing or reducing the potential difference between the two. Background technique [0002] With the continuous development of society, electronic information technology has penetrated into the national society, especially in the fields of communication, finance, petrochemical, electric power and transportation. It can be said that electronic information technology is affecting our society all the time. The safety issue of how to ensure their normal operation has also been raised to a new level with their in-depth development, especially the potential safety hazards caused by natural disasters are extremely huge, and lightning is one of the major safety problems faced by electronic information technol...
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IPC IPC(8): H02H9/06
Inventor 尹天文许年生王碧云刘明东蒋容兴张玄马跃乾
Owner SEARI ELECTRIC TECH