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Overvoltage, overcurrent, leakage and lightning protection multifunctional solar electric supply protection controller

A protection controller, multi-functional technology, applied in the protection of overvoltage response, emergency protection circuit device for limiting overcurrent/overvoltage, emergency protection circuit device, etc., can solve the problem that the protection cannot be obtained again, Problems such as piezoresistor damage, back-end electrical equipment damage, etc., achieve the effect of simple structure, not easy to catch fire, and cost saving

Inactive Publication Date: 2011-05-18
储应坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the lightning strike is strong, the piezoresistors are broken down and damaged respectively: the protection cannot be taken again, resulting in damage to the back-end electrical equipment, which must be repaired before power can be sent

Method used

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  • Overvoltage, overcurrent, leakage and lightning protection multifunctional solar electric supply protection controller
  • Overvoltage, overcurrent, leakage and lightning protection multifunctional solar electric supply protection controller
  • Overvoltage, overcurrent, leakage and lightning protection multifunctional solar electric supply protection controller

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Embodiment Construction

[0016] Referring to the attached drawings, a kind of overvoltage, overcurrent, leakage, lightning protection multifunctional solar energy, mains power protection controller includes a cabinet 1, the cabinet 1 is respectively provided with an inlet hole 3 and an outlet hole 7, and the cabinet 1 is installed There is an insulating base plate 8, including an AC contactor 9 fixed on the insulating base plate 8, a voltage transformer 23, A, B, and C phase line wiring copper plates 10, 11, 12, a neutral line wiring copper plate 13, a grounding copper plate 14 and integrated The circuit board 15 with the detection control circuit introduces three phase wires and one neutral wire respectively from the wire inlet 3 of the chassis 1, and the three phase wires are connected in series with an AC contactor 9 and pass through the voltage transformer 23 together with the neutral wire. , Corresponding to A, B, C phase line wiring copper plate 10, 11, 12 and neutral line wiring copper plate 13,...

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Abstract

The invention discloses an overvoltage, overcurrent, leakage and lightning protection multifunctional solar electric supply protection controller. At thunder and lightning, high voltage of more than kilovolts and current of scores of kilo-amperes flow through three phase lines and a zero line of an AC contactor simultaneously and pass through a voltage transformer to be connected with four copper plates of a connecting terminal. A piezoresistor is arranged as an over-voltage suppression circuit connected with the copper plates to discharge to the ground. When the discharge voltage and current exceed the predetermined values, a current induction relay actuates and the voltage transformer is connected with a detection control circuit to drive j1, j2 and the AC contactor to complete the connection and the disconnected of the electric supply respectively. When people contacts with the leakage circuit or electric equipment, the leakage current reaches at a regulated current value so that the electric supply is cut off to protect the people. The overvoltage, overcurrent, leakage and lightning protection multifunctional solar electric supply protection controller has a simple structure, and can be connected in series in any 380V or 220V AC circuits, is not easy to fire and high in safety. Few resistance elements are adopted in the control circuit and each branch circuit so that the cost is saved.

Description

technical field [0001] The invention relates to an integrated device for overvoltage, overcurrent, leakage and lightning protection in a power supply circuit, especially capable of taking overvoltage, overcurrent, continuous protection of itself and the back-end electrical equipment during strong lightning, and completing the communication room The purpose of mutual conversion between solar power supply and alternating current. Background technique [0002] At present, the known overvoltage, overcurrent, and lightning protectors are formed by connecting a metal case, three varistors, (or between), a metal copper plate, three connection terminals and a protective ground wire. The three phase wire terminals are connected in parallel with the three live wires a-b-c of the mains, and one or more varistors marked with a certain power and a certain voltage value are connected in series on the copper plates of the three phase line terminals of abc and the copper plate of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/32H02H9/04H02H3/22H02H3/06
Inventor 储应坤
Owner 储应坤
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