Multifunctional control disconnection type leakage protector control circuit and method
A leakage protector and control circuit technology, which is applied in the direction of emergency protection circuit devices, emergency protection devices that automatically disconnect, and protection that responds to overvoltages. Electricity and other issues, to achieve the effect of reducing volume, improving applicability and reducing cost
Pending Publication Date: 2021-02-02
浙江诚富电器科技有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the existing disconnecting leakage protector control circuit is in use, the function is single, and it is impossible to perform various detection and protection on the circuit voltage. When there is a problem with the voltage, the disconnecting leakage protector cannot cut off the power in time, causing many hidden dangers
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0020] see Figure 1 to Figure 2 , the present invention provides a technical solution: a control circuit and method for a multifunctional control disconnect type leakage protector, including a high temperature protection circuit 1, a low temperature protection circuit 2, an overvoltage protection circuit 3, an external control disconnect circuit 4, a leakage chip U15, a mutual inductance Device ZCT17, high temperature protection circuit 1 is composed of thermistor NTC1, series circuit R8, R7, D3, low temperature protection circuit 2 is composed of thermistor NTC1, series circuit R9, thermistor NTC2, D4, overvoltage protection circuit 3 includes The sampling circuit ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a multifunctional control disconnection type leakage protector control circuit and method. The multifunctional control disconnection type leakage protector control circuit comprises a high-temperature protection circuit, a low-temperature protection circuit, an overvoltage protection circuit, an external control disconnection circuit, a leakage chip U1 and a mutual inductorZCT1. According to the multifunctional control disconnection type leakage protector control circuit and method, the voltage is detected through multiple control protection circuits such as the high-temperature protection circuit, the low-temperature protection circuit, the overvoltage protection circuit and the external control disconnection circuit, and when it is detected that the voltage is abnormal, when the voltage division ratio of a control pin A point of the leakage chip U1 exceeds 1 V, the leakage chip U1 is disconnected; a point B of the electric leakage chip U1 outputs high voltageto drive the silicon controlled rectifier SCR1 to work, the tripping coil L1 obtains electricity, and the electric leakage protector trips and is powered off, so that the requirement of multi-function control is met, and meanwhile the functions of high-temperature protection, low-temperature protection, overvoltage protection and external control disconnection are achieved.
Description
technical field [0001] The invention relates to the technical field of leakage protectors, in particular to a control circuit and a method for a multifunctional control disconnect type leakage protector. Background technique [0002] Leakage protector, referred to as leakage switch, also known as leakage circuit breaker, is mainly used to protect fatal personal electric shock when the equipment has a leakage fault. It has overload and short circuit protection functions and can be used to protect circuits or motors from overload and short circuit. , It can also be used as an infrequent switching start of the line under normal conditions. When the existing control circuit of the disconnecting leakage protector is used, it has a single function and cannot perform multiple detections and protections on the circuit voltage. As a result, when there is a problem with the voltage, the disconnecting leakage protector cannot cut off the power in time, causing many hidden dangers. The...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02H3/20H02H3/26H02H5/04H02H3/02
CPCH02H3/021H02H3/20H02H3/26H02H5/042
Inventor 倪圣富
Owner 浙江诚富电器科技有限公司