A backup circuit breaker for surge protector

A surge protector and protector technology, applied in the direction of protection switch operation/release mechanism, etc., can solve problems such as safety hazards and achieve the effect of ensuring continuity

Active Publication Date: 2021-08-10
CHANGZHOU CHUANGJIE LIGHTNING PROTECTION +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of this, the present invention provides a kind of SPD back-up circuit breaker, to solve the hidden danger problem in the prior art

Method used

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  • A backup circuit breaker for surge protector
  • A backup circuit breaker for surge protector
  • A backup circuit breaker for surge protector

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0041] figure 1 It is a three-dimensional schematic diagram of the internal structure of the SPD backup circuit breaker according to a preferred embodiment of the present invention. figure 2 It is a top view of the internal structure of the SPD backup circuit breaker according to a preferred embodiment of the present invention. image 3 It is a bottom view of the internal structure of the SPD backup circuit breaker according to a preferred embodiment of the present invention. Figure 4 It is an overall three-dimensional schematic diagram of the SPD backup circuit breaker according to a preferred embodiment of the present invention.

[0042] Such as Figure 1-4 As shown, the SPD backup circuit breaker includes: upper terminal 1, bimetal 2, arc extinguishing chamber 3, positive temperature coefficient resistor 4, static contact 5, discharge gap 6, installation card 7, lower terminal 8, electromagnetic Release 9, shell 10, handle 11, tripping mechanism 12, moving contact 13. ...

specific Embodiment 2

[0062] Similar to the specific embodiment 1, the structure and working principle of the SPD backup circuit breaker are basically the same as those of the SPD backup circuit breaker in the specific embodiment 1. The difference from the specific embodiment 1 is that the room temperature resistance of the positive temperature coefficient resistor 4 is 1 ohm, which is suitable for power frequency power supply voltage 110V system, 250V-800V overvoltage, and the tripping current value of the electromagnetic tripper is power frequency current or The DC current is 0.6-1A, and the maximum non-operating current value of the bimetal strip 2 is 0.3A.

specific Embodiment 3

[0064] Similar to the specific embodiment 1, the structure and working principle of the SPD backup circuit breaker are basically the same as those of the SPD backup circuit breaker in the specific embodiment 1. The difference from the specific embodiment 1 is that the room temperature resistance of the positive temperature coefficient resistor 4 is 50 ohms, which is suitable for power frequency power supply voltage 1000V system, 3000V-5000V overvoltage, and the tripping current value of the electromagnetic tripper 9 is power frequency current Or the DC current is 3-5A, and the maximum non-operating current value of the bimetal strip 2 is 1A.

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Abstract

The invention discloses an SPD backup protection circuit breaker, which is used for the backup protection of the SPD. When the SPD is abnormal, it can provide inverse time protection and instantaneous protection, break the power frequency current, protect the SPD from damage or quickly separate it from the power supply circuit when the SPD is damaged, and provide preventive protection for SPD failure to avoid fire, etc. Disasters happen. The invention includes a shell, a handle, upper and lower terminals, an installation card, a tripping mechanism, a moving contact, a static contact, an arc extinguishing chamber, and also includes a discharge gap, a positive temperature coefficient resistor, a bimetal sheet and an electromagnetic tripping device . The invention can protect the SPD without affecting the function of the SPD to protect the protected equipment.

Description

technical field [0001] The present invention relates to surge protection, in particular to a backup protection circuit breaker, which is used for not acting under specified lightning strike current and separating the surge protector from the circuit under relatively small power frequency current. Background technique [0002] Various natural disasters occur frequently in today's society, and lightning is one of them. Lightning is a special weather phenomenon caused by the discharge of charged clouds in the air. It can generate lightning impulse currents of tens or even one or two hundred thousand amperes. These impulse currents can produce huge electromagnetic effects, thermal effects and mechanical effects. It is an important cause of damage to electrical equipment and electronic equipment. It threatens the safe and stable operation of electrical equipment and electronic information systems in various fields such as household appliances, communications, electricity, railway...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/40
CPCH01H71/40
Inventor 束静王农张健
Owner CHANGZHOU CHUANGJIE LIGHTNING PROTECTION
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