CN204989306U - Three -phase equilibrium automatic regulating apparatus - Google Patents

Abstract

The three-phase balance automatic adjustment device includes a shell, and a current transformer, an A/D converter, a CPU and a stepping motor are arranged inside the shell. The current transformer is connected to the user's current through the terminal on the shell, and the current transformer passes through The A/D converter is connected with the CPU, and the CPU is connected with the short message module outside the casing, the current display module on the casing and the manual and automatic transfer switch, and the manual and automatic transfer switch is connected with the stepping motor. The utility model utilizes the mechanical principle and the principle of automatic control of electric quantity measurement to design a three-phase balance automatic adjustment device. Through the utility model device, the automatic adjustment and manual adjustment of the load can be conveniently performed, and the current of each phase and The time for automatically adjusting the load can be set, and has the advantages of simple structure, convenient use and high adjustment efficiency.

Description

Three-phase balance automatic adjustment device

technical field

The utility model relates to the technical field of electric load regulating equipment, in particular to a three-phase balance automatic regulating device.

Background technique

With the rapid development of the economy, the unbalanced three-phase load of rural users is becoming more and more obvious. At present, most of the load balance adjustments are performed manually. During the load adjustment process, power outages are required, and the time is long and the risk is high. Existing uncontrollable factors.

Utility model content

The utility model provides a three-phase balance automatic adjustment device to solve the problem of unbalanced three-phase loads in the prior art.

The technical scheme that the utility model solves its technical problem adopts is:

A three-phase balance automatic adjustment device, including a housing, in which a current transformer, an A/D converter, a CPU and a stepping motor are arranged, and the current transformer is connected to the user's current through a terminal on the housing, and the current mutual The device is connected to the CPU through the A/D converter, and the CPU is connected to the SMS module outside the housing, the current display module on the housing and the manual and automatic transfer switch, and the manual and automatic transfer switch is connected to the stepping motor.

A current adjustment knob, an interval time adjustment button and a power switch are arranged on the above-mentioned casing.

The working principle of the utility model device is: measure the current of multiple users through the current transformer, and convert it into a digital signal through the A/D converter. If there is an unbalanced current value exceeding the limit, start the SMS module to send the information of the unbalanced current value exceeding the limit to the designated phone. When the unbalanced current value exceeds the limit, the CPU detects whether the manual and automatic transfer switch is In the automatic position, whether it is in the automatic adjustment position, the logical judgment will be started. According to the judgment result, the stepper motor will be controlled to automatically adjust the three-phase load. If it is in the manual position, it will be manually adjusted by the relevant personnel through the current adjustment knob. three-phase load.

The utility model utilizes the mechanical principle and the principle of automatic control of electric quantity measurement to design a three-phase balance automatic adjustment device. Through the utility model device, the automatic adjustment and manual adjustment of the load can be conveniently performed, and the current of each phase can be displayed. The time for automatically adjusting the load can be set, and has the advantages of simple structure, convenient use and high adjustment efficiency.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the circuit schematic diagram of the utility model device;

Fig. 2 is a schematic diagram of the appearance of the device of the present invention.

In the figure, 1 shell, 2 current transformer, 3 A/D converter, 4CPU, 5 SMS module, 6 current display module, 7 manual and automatic transfer switch, 8 stepper motor, 9 terminal, 10 current adjustment knob, 11 interval Time adjustment button, 12 power switches.

detailed description

As shown in Figure 1 and Figure 2, a three-phase balance automatic adjustment device includes a housing 1, a current transformer 2, an A/D converter 3, a CPU4 and a stepping motor 8 are arranged inside the housing 1, and the current transformer 2 is connected to the user current through the terminal 9 on the housing 1, the current transformer 2 is connected to the CPU4 through the A/D converter 3, and the CPU4 is connected to the SMS module 5 outside the housing 1 and the current display module 6 on the housing 1 It is connected with the manual automatic transfer switch 7, and the manual automatic transfer switch 7 is connected with the stepping motor 8, and the current adjustment knob 10, the interval time adjustment button 11 and the power switch 12 are arranged on the housing 1.

The working principle of the utility model device is: measure the current of multiple users through the current transformer, and convert it into a digital signal through the A/D converter. If there is an unbalanced current value exceeding the limit, start the SMS module to send the information of the unbalanced current value exceeding the limit to the designated phone. When the unbalanced current value exceeds the limit, the CPU detects whether the manual and automatic transfer switch is In the automatic position, whether it is in the automatic adjustment position, the logical judgment will be started. According to the judgment result, the stepper motor will be controlled to automatically adjust the three-phase load. If it is in the manual position, it will be manually adjusted by the relevant personnel through the current adjustment knob. three-phase load.

Claims (2)

1. a three-phase equilibrium self-checking device, it is characterized in that comprising housing, enclosure interior arranges current transformer, A/D converter, CPU and stepper motor, current transformer is connected with user's electric current by the terminals on housing, current transformer is connected with CPU by A/D converter, electric current display module on the SMS module of CPU and outside, housing is connected with manual automatic transfer switch, and manual automatic transfer switch is connected with stepper motor.

2. three-phase equilibrium self-checking device according to claim 1, is characterized in that housing is arranged electric current adjustment knob, interval time adjusts button and power switch.