Backup circuit breaker protection device for surge protection device
A technology of surge protector and protector, applied in the direction of protection switch operation/release mechanism, etc., can solve problems such as potential safety hazards, and achieve the effect of ensuring continuity
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specific Embodiment 1
[0040] 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.
[0041] 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
[0060] 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, 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
[0061] 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 the power frequency power supply voltage 1000V system, 3000V-5000V overvoltage, and the tripping current value of the electromagnetic tripper 9 is the 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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