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1156results about "Switchgear details" patented technology

Blocking against misoperation, alarming and protecting device of high-voltage switch cabinet

The invention discloses a blocking against misoperation, alarming and protecting device of a high-voltage switch cabinet. The back door of the high-voltage switch cabinet prevents entering a system by mistake with electricity, and an electrified display DD2 and an electromagnetic lock DS close the back door of the switch cabinet; an electrified display DD1, an electromagnetic lock contact DS1 of the back door of the high-voltage switch cabinet and a voice alarm BJQ are connected in series to form an electrified voice prompt alarming loop; the electrified display contact DD1, a back door stroke contact QS1, an intermediate relay KB1, a normally open contact KB1 and a singlechip P3.2 signal input port are connected in series to form a singlechip 89C51 signal input circuit; the device singlechip 89C51 outputs power supply trip, unit alarming and accident recording circuits after sequential operation, thus making up the bug of an anti-misoperation system; the invention has blocking for preventing misoperation of workers, has voice prompt alarming for preventing misoperation of workers and is provided with a tripping system cutting off the power supply when workers are in dangerous voltage. The invention can ensure personnel safety of workers and avoid personal injury and death.
Owner:微山县供电公司 +2

Electric connection mechanism used for plug-in circuit breaker

The invention relates to an electric connection mechanism which comprises at least one fixed terminal, at least two contact pieces and at least one slotting tool, wherein the fixed terminal is provided with a platy raised part extending forwards, the upper surface and lower surface of the free end of the fixed terminal are contact surfaces, and the free end thereof is provided with a hole or a groove at the left side and the right side respectively; a first contact surface is arranged at the rear end of each contact piece and provided with a hole or a groove, the shape of the first contact surface of each contact piece is matched with that of the contact surface of the fixed terminal, the other end of each contact piece is provided with a second contact surface vertical to the first contact surface, the first contact surfaces of the two contact pieces are pressed on the contact surface of the raised part respectively through elastic components, and the second contact surfaces of the two contact pieces are opposite to each other so as to form a plug-in clamping head; and the slotting tool is plugged in the plug-in clamping head, and the free end of the slotting tool is provided with a contact surface matched with the second contact surfaces of the contact pieces in shape. As for the electric connection mechanism, the contact pieces and the fixed terminal are well contacted all the time, the contact pieces and the slotting tool are maintained to be well contacted, and the error correction capacity is extremely good.
Owner:BEIJING PEOPLES ELECTRIC PLANT +1
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