Financial automatic teller machine (ATM) power source and special lightning protection device for communication system

A technology of automatic teller machine and power supply system, applied in the direction of electrical components, circuit devices, emergency protection circuit devices, etc., can solve problems such as teller machine malfunction and huge difference in building protection levels, and achieve the effect of simplifying installation and application

Inactive Publication Date: 2016-08-03
BEIJING SCI & TECH LLC
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  • Abstract
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  • Claims
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Problems solved by technology

In addition, the environments where the teller machines are located are different, and the protection levels of b

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  • Financial automatic teller machine (ATM) power source and special lightning protection device for communication system
  • Financial automatic teller machine (ATM) power source and special lightning protection device for communication system

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[0031] The following is a detailed description through specific embodiments. It should be understood that the following embodiments are only for explaining and describing the present invention, and do not limit the scope of the present invention in any form.

[0032] The special lightning protection device for the financial automatic teller machine of the present invention includes a power input end, a protection circuit and a power output end. Such as figure 1 As shown, it includes a power input terminal, a protection circuit, and a power output terminal; the protection circuit includes a first-level protection circuit and a second-level protection circuit in a parallel relationship; the first-level protection circuit includes a parallel discharge Tube (1) and varistor (2); the second-level protection circuit includes a parallel diode (3) and a TVS tube (4), and one or more resistors (5) in series; the protection circuit Set between the live wire, neutral wire and ground wire. ...

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Abstract

The invention relates to a financial automatic teller machine (ATM) power source and a special lightning protection device for a communication system. The special lightning protection device for the communication system comprises a power source input end, protection circuits and a power source output end; the protection circuits include a first-stage protection circuit and a second-stage protection circuit which are in parallel connection; the first-stage protection circuit includes discharge tubes and varistors which are in parallel connection; the second-stage protection circuit includes diodes and a TVS which are in parallel connection, and is connected in series with one or a plurality of resistors; and the protection circuits are arranged among the live line, null line and ground line of a financial automatic teller machine power source system. According to the lightning protection device of the invention, power source surge protection and signal surge protection are integrated, simplification of installation and application is realized; a plurality of groups of lightning protection devices are installed in parallel, so that power source surge protection level is decreased to safe voltage, and therefore, a lightning protection effect can be still achieved under a situation that field grounding is difficult or even impossible.

Description

technical field [0001] The invention relates to a lightning protection device, in particular to a special lightning protection device for a financial automatic teller machine (ATM) power supply and a communication system. Background technique [0002] At present, financial ATMs are basically not equipped with lightning protection grounding. In terms of lightning electromagnetic pulse and induced lightning protection, it basically belongs to the lightning protection state of the building power system, that is, the working grounding, anti-static grounding or safety grounding of cabinet equipment. The minimum inductive lightning protection of the power supply and distribution system of the building lies in the lightning current level of 20KA. According to the national standard, the residual voltage level is 2.0KV, which has no protection ability for the automatic teller machine, because the integrated circuit board in the automatic teller machine, The power supply of the contro...

Claims

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Application Information

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IPC IPC(8): H02H9/06
CPCH02H9/06
Inventor 曾华曾二睦
Owner BEIJING SCI & TECH LLC
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