Mechatronics composite switch is a kind of intelligent low-voltage capacitor switching switch, which combines the advantages of SCR and contactor, that is, there is no arc generated when the contactor is powered on, and there is no power consumption and harmonic pollution when the contactless switch works for a long time. Its working principle is to connect the thyristor and the contactor in parallel, so that the compound switch has the zero crossing switching of the thyristor at the moment of switching, and has the characteristics of contact and no power consumption during the normal switching. It makes up for the deficiency of SCR and AC contactor in the application of low voltage reactive power compensation. It is suitable for the situation where the compensation speed is not very high, such as the low-voltage reactive power compensation device in living quarters, box transformer and urban and rural power network transformation.

Functional features:

1. It is controlled by single chip microcomputer. After receiving the external control signal, it can automatically find the best switching point through intelligent judgment to ensure zero crossing switching.

2. Thyristor switch and contactor are connected in parallel, which has zero crossing switching of thyristor at the moment of switching, and has the characteristics of contact and no power consumption during normal switching.

3. Single chip microcomputer is used to control the switching and intelligent monitoring of the operation status of the composite switch, with the protection functions of voltage phase loss, no-load, power failure, self diagnosis fault, etc.

4. Thyristor and contactor only consume electricity when switching, but not at ordinary times, so as to save energy and reduce consumption.

5. Make full use of integrated circuit, reduce discrete components as far as possible, make the module volume as reasonable as possible and reduce, save cabinet space.

6. The service life is more than 500000 times, maintenance free.

7. Reasonable structure design, simple wiring, convenient installation and debugging.