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2 results about "Isolation transformer" patented technology

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An isolation transformer is a transformer used to transfer electrical power from a source of alternating current (AC) power to some equipment or device while isolating the powered device from the power source, usually for safety reasons. Isolation transformers provide galvanic isolation and are used to protect against electric shock, to suppress electrical noise in sensitive devices, or to transfer power between two circuits which must not be connected. A transformer sold for isolation is often built with special insulation between primary and secondary, and is specified to withstand a high voltage between windings.

Navigation aid lamp isolation transformer open-circuit state monitoring device and control method

InactiveCN106054015APrevent malfunctionAvoid processing powerTransmission systemsTransformers testingDistribution transformerWorkstation

A navigation aid lamp isolation transformer open-circuit state monitoring device comprises a principal computer system and transformer state monitoring units. The principal computer system is an industrial control computer, and is arranged in a navigation aid lamp workstation. The transformer state monitoring units are installed in a transformer barrel together with an isolation transformer (the secondary side is composed of a main winding and an auxiliary winding), is used for collecting and transmitting the information of the isolation transformer, and communicate with the principal computer system wirelessly. Through the navigation aid lamp isolation transformer open-circuit state monitoring device and a control method provided by the invention, whether the main winding of the secondary side of the isolation transformer is in an open circuit can be detected effectively, whether there is current in a navigation aid lamp loop can be detected, whether the isolation transformer or the navigation aid lamp fails can be judged and the judgment result can be reported to the principal computer system in real time, so that the problem that the navigation aid lamp loop cannot be handled in a timely manner due to failure of the windings of the isolation transformer is avoided.

Owner:CIVIL AVIATION UNIV OF CHINA

Single phase electric energy meter based on internet

InactiveCN101144832AOvercoming real-timeOvercome functionData switching networksTime integral measurementMicrocontrollerQuality of service

The present invention relates to a single-phase electricity energy meter based on the internet, belongs to the electric power system field. The present invention provides a power supply for a singlechip and an electricity energy measuring chip through the power supply chip, a clock chip provides the clock impulse for a memory chip and the singlechip. The electricity energy measuring chip and a voltage mutual inductor collect signals from an outer power grid. The present invention reads and processes information through the singlechip, stores the information through a singlechip bus, then outputs the information to a relay and a display through a univerall pipe foot of the singlechip. Finally the singlechip is connected with the internet connected with a PC through an electromagnetic isolation transformer and a connector. When the electricity energy meter cannot work, the communication can be resumed by testing the infrared communication chip. The electricity energy meter can improve the service quality, can realize the online management, and can improve the work efficiency.

Single phase electric energy meter based on internet

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Owner:BEIHANG UNIV

2 results about "Isolation transformer" patented technology

Navigation aid lamp isolation transformer open-circuit state monitoring device and control method

Single phase electric energy meter based on internet

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