Mining flame-proof type selective leakage protector
A leakage protector, flame-proof technology, applied in the protection of fault current response, emergency protection circuit device, automatic disconnection emergency protection device, etc., can solve the problem of low reliability, poor anti-interference ability, false tripping Main switch and other problems, to prevent personal electric shock accidents, protect the safety of feeding, and ensure consistency
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[0025] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0026] A mine explosion-proof low-voltage selective leakage protector, such as figure 1 As shown, including single chip microcomputer, power supply unit, liquid crystal display module, signal detection and processing circuit, digital input module, keyboard input module, relay output module, watchdog circuit, experimental circuit, status indicator light, Ethernet communication module, CAN Communication module, RS485 communication module, drive tripping circuit and sound and light alarm, the power supply unit is connected with the single-chip microcomputer and the liquid crystal display module to supply power for it, and the single-chip microcomputer is connected with the zero-sequence current transformer installed in the power supply system through the signal detection and processing circuit Connect to realize the leakage detection function, th...
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