Electric measurement and control module used indoors

Abstract

The invention belongs to the technical field of electric control and discloses an electric measurement and control module used indoors. The electric measurement and control module used indoors comprises a shell, an upper terminal 2, a lower terminal 9, an arc guiding board 6, a moving contact 4, a fixed contact 5, an arc extinguish chamber 7, a bi-stable electromagnetic driving mechanism, a current transformer 16 and a multi-core measurement and control signal interface card 14, wherein the upper terminal 2, the lower terminal 9, the arc guiding board 6, the moving contact 4, the fixed contact 5, the arc extinguish chamber 7, the bi-stable electromagnetic driving mechanism, the current transformer 16 and the multi-core measurement and control signal interface card 14 are arranged in the shell, the electric measurement and control module is matched with an external controller for use, the external controller is connected with the current transformer 16 through the multi-core measurement and control signal interface card, and real-time monitoring is conducted on the current of an electrical circuit where the electric measurement and control module is located. The external controller controls the multi-core measurement and control signal interface card to send pulse signals to the bi-stable electromagnetic driving mechanism, the bi-stable electromagnetic driving mechanism drives the moving contact 4 to make contact with or be separated from the fixed contact 5, and control over switching on and switching off of the electrical circuit where the electric measurement and control module is located is achieved.

Description

technical field [0001] The invention belongs to the technical field of electricity consumption control, and relates to a technology for controlling circuit connection or disconnection by using pulse signals, and specifically discloses an indoor electricity consumption measurement and control module. Background technique [0002] The common device for controlling the connection or disconnection of electric energy is mainly an air circuit breaker. The principle of its tripping (power-off) is that when a short circuit occurs in the circuit or the current is too large due to the use of high-power electrical appliances, the electromagnet produces a strong magnetic force. , it attracts the armature to generate action, and at the same time drives the release device to trip to complete the trip. Under normal circumstances, when no large current is generated, the air switch will work normally and will not act. [0003] The above-mentioned air switch is an action generated by itself w...

AI Technical Summary

Problems solved by technology

Therefore, the external power distribution controller cannot obtain the internal on-off state of the judgment module except for the two methods of detecting the on-off state of the line and recording the on-off state of the module.

However, the line continuity detection cannot distinguish the disconnection between the moving and static contacts from the disconnection of other parts of the line. Misjudgment of the on-off state of the module

The method of recording the on-off state of the module will not only bring troubles to the user by setting the initial state in the external power distribution controller, but also cause problems when the execution fails or the on-off state in the module is artificially changed due to maintenance. Misjudgment

[0008] Using this kind of measurement and control module, in many cases, it is impossible to achieve effective control of the power consumption line, or even wrong control. When the power line is opened, the external controller will keep the measurement and control module in the on state because the on-off detection result shows that the line is disconnected

For another example, when the external controller sends an execution pulse to a measurement and control module that is in an off state to turn it on, the signal transmission fails due to external interference, and the measurement and control module does not act, but the external controller records the control operation , and rewrite the state of the measurement and control module in the memory to be on, and when the power line is controlled to be disconnected next time, the line will be connected by mistake

[0009] 2. The inside of the module uses a right-angled arc guide plate to cooperate with the arc extinguishing chamber to extinguish the arc, and the arc extinguishing effect is not good.

[0010] 3. In the overall layout of each component of the module, the electrical connection line from the multi-core connector to the electromagnetic action mechanism that belongs to the weak current connection crosses with the electrical connection line from the upper terminal to the lower terminal that belongs to the strong current connection. The connection line is easy to interfere with the weak current signal, which reduces the reliability of the measurement and control module

If the pins are connected by soft wires, and after the product is fixed on the wall, the pins are inserted into the jacks of the multi-core connector separately. The tool reaches in to complete the plugging operation, on the other hand, another plugging operation also brings trouble to the installation process

Images