Circuit for indicating abnormality of three-mode surge absorber of public electric power and a multiple-end fuse
OwnerJonie Chouinventor
Life of this patent
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Abstract
A circuit for indicating abnormality of a three-mode surge absorber of a public electric power is disclosed. The circuit is serially connected between the input end and output end of a public electric power supply for indicating the abnormality of a three-mode surge absorbing device of a public power supply so as to achieve the object of indicating an obvious indication to the users. The circuit includes a first surge absorbing device, a first three-end fuse, an abnormal indication circuit, a second surge absorbing device and a second two-end fuse. Other than indicating the abnormality of the L-N, L-G, N-G surge absorbing devices, the present invention can prevent current leakage as destroys occurs in the diverse modes.
Claims10
A circuit for indicating abnormality of a three-mode surge absorber of a public electric power serially connected to an input end and an output end of a public power supply, said input end having a line input end, a neutral input end, and a ground input end;
- said output end including a line output end, a neutral output end, and a ground output end for indicating abnormalities of a three-mode surge absorber of a public electric power completely;
- said circuit for indicating abnormality of a three-mode surge absorber of a public electric power comprising:
- a first surge absorbing device coupled to said line input end and said neutral input end for absorbing a surge between said line input end and said neutral input end;
- a first three-end fuse coupled to said first surge absorbing device and said line input end for preventing abnormality of parts;
- an abnormal indication circuit coupled to said first three-end fuse for indicating the abnormality of three-mode in public power supply;
- a second surge absorbing device coupled to said abnormal indication circuit, said neutral input end and said ground input end for absorbing a surge between said neutral input end and said ground input end;
- and
- a second three-end fuse coupled to said neutral input end and said second surge absorbing device for preventing the abnormality of parts.
A multiple-end fuse, at least one ends being added to a two-end fuse, when a current sufficient burnt said two-end fuse to break off flowing through a first end and a second end of said two-end fuse, a third end or other ends being cut off so that said third end or other ends are completely isolated from said first or said second ends.
Dependencies are inferred from the claim text.