A low-power, low-cost, multi-compatible three-phase electrical circuit breaker comprehensive protection device
A comprehensive protection device and low-cost technology, applied in the field of low-power and low-cost multi-compatible three-phase electrical circuit breaker comprehensive protection device, can solve the problems of large power consumption, incomplete protection, and high cost of phase loss protection
Active Publication Date: 2018-03-23
钟兴明
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Problems solved by technology
[0003] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a low-power, low-cost, multi-compatible three-phase electrical circuit breaker comprehensive protection device, which can effectively solve the problem of incomplete protection of existing phase-loss protection devices. It is the problem that there are many single pieces of application, too large volume, high cost, and the power consumption of phase loss protection is too large, and the compatibility with overcurrent, leakage, overvoltage, and other information controls is not good.
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[0026] Please refer to Figure 1 to Figure 3 As shown, it shows the specific structure of the preferred embodiment of the present invention, including AC power input terminal INN, AC power input terminal INA, AC power input terminal INB, AC power input terminal INC, tripping Switch KA, trip switch KB, trip switch KC, trip coil LA, trip coil LB, trip coil LC and trip coil LT, trip link TA, trip link TB, trip link TC And trip link T, leakage induction coil BO, current phase loss induction coil LGA, current phase loss induction coil LGB, current phase loss induction coil LGC, current phase loss induction switch LGKA, current phase loss induction switch LGKB, current phase loss Induction switch LGKC, device output terminal OUTN, device output terminal OUTA, device output terminal OUTB, device output terminal OUTC, leakage test switch AN, leakage test current limiting resistor RN, positive temperature coefficient resistor RA, positive temperature coefficient resistor RB, positive ...
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The present invention discloses a low-power low-cost multi-phase compatible with integrated electrical disconnection protection device, comprising a solenoid trip switch assembly unit, a current sensing lack legend switching unit turn on or off the current phase selection unit, the voltage sense lack Legend a switching unit phase delay trigger unit, a control unit external signal input, a drain sensing means with a threshold trigger, the trigger priority power drain unit, the leakage test unit, overvoltage trigger unit, three-phase or single-phase rectifier unit, an electronic switch is a trigger delay unit is turned on.The products are small, low cost, low power use, compatibility, flow and for three-phase asynchronous motor of the ordinary three-phase electrical leakage, over voltage, under voltage, phase current and voltage (ordinary three-phase electrical appliances the need for current phase function can be turned off), the foreign signal control circuit breaker tripping.
Description
technical field [0001] The invention relates to the technology in the field of operation protection of a three-phase asynchronous motor and protection of three-phase electrical appliances, in particular to a low-power, low-cost, multi-compatible three-phase electrical circuit breaker comprehensive protection device. Background technique [0002] There are many types and specifications of three-phase asynchronous motors, and it is well known that they are widely used. Because it is an electrical appliance that converts electrical energy into rotating mechanical energy, it must be connected with a transmission line, which inevitably causes mechanical vibration; while the transmission joints such as transmission wires, switches, contactors, and terminals are subject to natural moisture, oxidation, dust pollution, etc. The reason, as well as the mechanical vibration of the motor itself and the improper selection of the fuse, lead to a single line break and a phase current failur...
Claims
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IPC IPC(8): H02H7/08H02H7/09
CPCH02H7/0805H02H7/09H02H7/085H02H3/08H02H3/00
Inventor 钟兴明胡海洋钟金丞钟椰
Owner 钟兴明