1. The air switch is an important electrical appliance in the low-voltage distribution network and power drive system, which integrates control and a variety of protection functions. In addition to completing contact and breaking circuits, it can also generate short circuits to circuits or electrical equipment. It can also be used to protect against severe overloads and undervoltages, and can also be used to start the motor infrequently.
2. When the power supply voltage returns to normal, it needs to be re-closed before it can work, and the voltage loss protection is achieved. Because there are many insulation methods, there are oil switches, vacuum switches and other inert gas (sulfur hexafluoride gas) switches. An air switch uses air to extinguish the arc generated during the switching process. Hence the name air switch.
3. Under normal circumstances, the armature of the overcurrent tripper is released; In the event of a serious overload or short-circuit fault, the coil connected in series with the main circuit will generate a strong electromagnetic attraction to attract the armature down and jack the locking hook, so that the main contact is disconnected. The work of the undervoltage tripper is just the opposite, when the voltage is normal, the electromagnetic suction is attached to the armature, and the main contact can be closed. In the event of a severe voltage drop or power failure, the armature will be released and the main contact will be disconnected.
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Tianyi switch - the difference between air switch and leakage protection switch
1. Differences in appearance
Although these two types of switches seem to be very familiar, but there are still differences, half of the leakage protection switch is the same as the air switch, and the other half is not, it is equipped with a test jump button and a recovery button, which are not available in the air switch.
2 ...
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VTeam switch - introduction to the advantages and disadvantages of linear power supply
Merit:
Good stability: Linear power supply can provide stable output voltage and current, which is very suitable for circuits and equipment that require high power supply accuracy.
Low noise: Linear power supplies have low noise, which is advantageous for applications that require a low-noise power supply.
Responsiveness ...
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Tianyi switch - the working condition of the air switch
Ambient air temperature: upper ambient air temperature +40°C; The lower limit of ambient air temperature is -5°C; The average temperature of the ambient air for 24 hours does not exceed +35 ° C.
Altitude: The altitude of the installation site does not exceed 2000m.
Atmospheric conditions: Atmospheric relative humidity at ambient air temperature of +4 ...
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Tianyi switch - introduction to the characteristics of high-voltage load switch
1. It can isolate the power supply, have obvious disconnection points, and is mostly used for fixed high-voltage equipment.
2. It has an arc extinguishing device and a certain opening and closing speed, and can pass the normal working current and the specified short-circuit circuit in the closing state.
3. It is strictly forbidden to turn on and off the circuit with load.
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Tianyi switch - what are the differences between limit switches and proximity switches?
First, the characteristics are different
1. Limit switch: The limit switch has the characteristics of small size, multiple functions, high precision, adjustable limit, strong versatility and easy maintenance, installation and adjustment.
2. Proximity switch: The proximity switch has the characteristics of a limit switch, and at the same time has the sensing performance.
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Tianyi switch - precautions for the use of proximity switches
1. If it is installed on metal, a certain space must be ensured to avoid interference between the proximity switch and the metal other than the detection object, resulting in failure. The metal parallel to the sensing surface must be 3 times the sensing distance from the sensing surface. The metal around the shaft of the proximity switch must be outside the cylinder, close to ...
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Tianyi button signal light - how to choose and use the button indicator light
How to use the indicator color correctly?
1. The indicator light (also known as the signal light) is mainly used to attract the attention of the operator or instruct the operator to carry out a certain operation in the way of bright indication, and as an indication that a certain state or instruction is being executed or has been executed.
2. General ...
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What are the common problems of Tianyi switch - disconnector?
1. What are the common faults?
Answer: The common faults of the disconnector are: (1) The contact part is overheated. (2) Porcelain insulation damage and flashover discharge. (3) Refuse to pull and close. (4) Wrong pulling and closing.
2. The overheating of the contact part of the disconnector during operation is caused by ...
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What are the advantages of Tianyi switch - limit switch?
1. The design is usually simple and straightforward
2. Works well in almost any industrial environment
3. It has high accuracy and repeatability
4. Low-power devices
5. High inductance load can be switched
6. Used to switch multiple loads
7. Simple installation
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VTeam participated in the 9th China CNC Machine Tool Exhibition
During the "Twelfth Five-Year Plan" period, China deepened reform and opening up and accelerated the transformation of economic development mode. Transformation and upgrading is the only way for the sustainable development of the machine tool industry, and the top priority of the industry's transformation and upgrading is to enhance the market competitiveness of high-end CNC machine tools. Exhibitors will take advantage of the CCMT ...
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Tianyi switch - the difference between the dual power supply automatic transfer switch CB and PC grade
First, the principle is different
1. Class Cb automatic switch is an electronic product that converts one or more load circuits from one power source to another
2. PC-level automatic transfer switchgear is an electrical appliance that converts one or several load circuits from one power supply to another. ...
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Tianyi Button Signal Light - Color Classification of Signal Indicator and Its Meaning
(1) Green (HG, GL)
What it means: stands for Safety, Normal, Readiness (i.e., an indication under safe operating conditions or the readiness of a mechanical device to start).
Function: It is often used to indicate the state of equipment ready to start, all auxiliary components are in a state of preparation for operation, and various parts ...
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Tianyi switch - the precautions required for the operation of dual power automatic transfer switch
1. When closing, first of all, attention should be paid to check that the circuit breaker that can be connected to the dual-power automatic transfer switch is indeed in the opening position, and then quickly operate the risk isolation switch to close it (whether the enterprise adopts manual management agency or leveraged financial institution personnel operation), but ...
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Tianyi switch - the role of low-voltage isolation switch
1. Through the isolation switch, it plays a good insulating role, so that the whole circuit can be safe and secure, and the maintenance personnel or staff also have enough ability to repair the circuit.
2. At the same time, the low-voltage isolation switch can also change the operation mode of the circuit, which is used in the power plant or gas plant.
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Tianyi switch - introduction to the types and characteristics of limit switches
Conventional domestic travel switch
LX19-001/111 in the LX19 series, LXK3-20S/T in the LXK3 series, JLXK1 series JLXK1-111/411/511 in the conventional travel switch are the most representative.
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Tianyi switch - the operation method of dual power automatic transfer switch
First, first place the dual power supply on the adjustment table, and the phase wire and the neutral wire (neutral line) are docked in place, and can not be connected wrongly.
Second, after the line is connected, it is necessary to check the installed line, and then turn on the main switch of the debugging station to turn on the common and standby working power supply.
Three, when the double ...
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VTeam switch – the working principle of linear power supply
The working process of the main circuit of the linear power supply is that the input power supply is first converted into a DC power supply by the pre-regulated circuit after the initial AC voltage regulation, and then the linear adjustment element is finely adjusted under the intelligent control of the control circuit and the monolithic microprocessor controller, so that the ...
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Tianyi switch - 9 tests and methods for switching power supply
1. Repeated short-circuit test
◆ Test instructions
The output of the module is short-circuited in various input and output states, the module should be able to achieve protection or retraction, repeated short-circuits, and after troubleshooting, the module should be able to automatically resume normal operation.
◆ Test Method
a ...
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New Upgrades - A new member of the warning light family reports
JD series warning light is Tianyi electrical appliances in the field of signal control launched high-performance products, once launched, it has won the unanimous favor of customers, products in the design, manufacturing, quality control and other aspects of the company's quality system has always been under the strict testing and supervision of the company's quality system, to ensure that each product ...
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Tianyi switch - introduction to the type of disconnector switch
According to the different ways in which it is installed
It can be divided into outdoor disconnector and indoor high-voltage disconnector. Outdoor disconnector refers to the disconnector that can withstand wind, rain, snow, filth, condensation, ice and heavy frost, etc., and is suitable for installation on terraces.
According to the different structures of its insulating pillars ...
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