Three-phase electrical fire detection alarm capable of preventing electric shock and static breakdown

Abstract

The invention relates to a three-phase electrical fire detection alarm capable of preventing electric shock and static breakdown. A detachable strong current access module is arranged on a shell of the alarm, a strong current terminal is arranged in the detachable strong current access module, and a protection unit is arranged in cooperation with the strong current terminal. The electric shock risk of a human body under high voltage is greatly reduced, and the risks of short circuit of a strong current part caused by rainwater and the like are prevented; as the shell has flame retardant property, electric arcs generated by high-voltage strong current are sealed in a safe space, and fire hazards caused by the electric arcs generated by the strong current are reduced; an electrostatic isolation retaining wall structure is adopted, so that ESD breakdown is effectively prevented, and influences of electric arcs generated by strong current on internal precision components and the like are effectively prevented; the influence of electromagnetic interference generated by strong current on components such as an internal precision metering chip is reduced, and the equipment detection precision is further improved.

Description

technical field [0001] The present invention relates to the technical field of signaling device or calling device; instruction sending device; alarm device, in particular to a three-phase electrical fire detection and alarm device for preventing electric shock and electrostatic breakdown. Background technique [0002] Electrical fires generally refer to the heat energy released due to faults in electrical circuits, electrical equipment, appliances, and power supply and distribution equipment, such as high temperature, arc, electric sparks, and non-faulty energy released, such as the hot surface of electric heating appliances. Fires caused by igniting the body or other combustibles under burning conditions, including fires caused by lightning and static electricity. [0003] At present, electrical fire accidents continue to occur frequently and show an increasing trend year by year. It is very important to monitor, detect and alarm electrical fires. [0004] However, in the ...

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Problems solved by technology

[0004] However, in the prior art, electrical fire detection and alarm devices have high requirements for the installation environment. There is a risk of electric shock to the human body under high voltage. It may cause risks such as short circuit of the strong current part, and even in daily use, there are problems that the strong current part will generate electromagnetic interference and affect internal precision metering chips and other components, and the detection accuracy of the equipment is very limited

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