Very effective leakage protector
A leakage protector and leakage protection technology, applied in the direction of automatic disconnection emergency protection devices, emergency protection circuit devices, electrical components, etc., can solve problems such as threats to personal safety, loss of control, and safety hazards
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Embodiment 1
[0027] (one) figure 2 It is the preferred embodiment 1 circuit schematic diagram of the present invention, wherein:
[0028] The zero-sequence current transformer H is composed of an annular iron core, primary coils n1, n2 and secondary coil n3, and the leakage signal adjustment circuit (1) is composed of resistors 2R1, 2R2, and a capacitor 2C1. The first The unit leakage protection control circuit module (2) is composed of leakage protection control circuit IC1 and capacitors 2C2, 2C3, 2C4, 2C5, and the second unit leakage protection control circuit module (3) is composed of leakage protection control circuit IC2 and capacitors 2C6, 2C7, 2C8, 2C9 form, the models of the core IC1 of the leakage protection control circuit module and the core IC2 of the leakage protection control circuit module are all M54123 chips, or chips equivalent to M54123 chip functions, and the guard state setting circuit (4) be made up of triode 2VT3 and resistance 2R3, 2R5, 2R6, described complementa...
Embodiment 2
[0038] (one) image 3 It is the preferred embodiment 2 circuit schematic diagram of the present invention, wherein:
[0039] The zero-sequence current transformer H is composed of an annular iron core, primary coils n1, n2 and secondary coil n3, and the leakage signal adjustment circuit (1) is composed of resistors 3R1, 3R2 and capacitor 3C1. The first The unit leakage protection control circuit module (2) is composed of leakage protection control circuit IC1 and capacitors 3C2, 3C3, 3C4, 3C5, and the second unit leakage protection control circuit module (3) is composed of leakage protection control circuit IC2 and capacitors 3C6, 3C7, 3C8, and 3C9 are formed, and the models of the leakage protection control circuit module core IC1 and the leakage protection control circuit module core IC2 are all M54123 chips, or chips equivalent to M54123 chip functions, and the defense state setting circuit (4) The 4th, 5 two pins of the leakage protection control circuit IC2 are directly ...
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