Rated current of LS molded case circuit breaker:
Now in the process of using molded case circuit breakers, it is necessary to understand the rated current of molded case circuit breakers, and the rated current of molded case circuit breakers generally has more than a dozen, mainly 16A, 25 A, 30A, and the high may reach 630A.
Common sense of LS electric molded case circuit breaker:
(1) Tripping
LS electroplastic case circuit breaker basically involves the tripping unit in the process of practical application, and the tripping is generally a thermomagnetic tripping or electronic tripping, and we must also understand this different tripping method in advance.
In the process of practical application, if there is a requirement for the capacity of LS electric molded case circuit breaker, you can choose some special molded case circuit breaker types, At the same time, we also need to understand the price situation of molded case circuit breaker, because of the molded case circuit breaker if it adopts different tripping methods, its price will be very different, we must understand at the time of acquisition, the manufacturer's rules in terms of specific prices, in addition to understanding the practical working conditions of molded case circuit breakers, Due to the process of practical application, the molded case circuit breaker will also have certain requirements for the ambient air temperature.
(2) Temperature
If the temperature is too high or too low, it may have a bad impact on the molded case circuit breaker, Now, the working conditions of the molded case circuit breaker generally require that the high temperature cannot exceed 40 degrees, and the low temperature cannot be lower than minus 5 degrees.
We must consult the manufacturer about the upper and lower limits of the temperature of the molded case circuit breaker in the process of practical use, and sometimes the price of the product supplied by a certain manufacturer may be relatively low, we will feel that this thing is very cost-effective, but if you have an in-depth understanding, you will find that its practical application process is more demanding on the working conditions, so this will also affect the later use, and we should also understand this problem in the process of use
In the process of practical application of LS molded case circuit breaker, it will also have some operational requirements, because the molded case circuit breaker is basically impossible to maintain, and the operation is basically manual operation.
|
More on that
|
Communication control of inverter - power inverter
The communication control of the inverter is more complicated, so it is listed separately.
The communication control of the inverter is a control method for the operation, speed regulation and status indication of the inverter through the communication interface of the inverter.
...
|
|
Inverter fault diagnosis - LS power generation
1. How to distinguish between heavy and light faults
When there is a problem with the light, the system announces the alarm signal and the fault indicator flashes. When there is a serious problem, the system will announce the problem indicator, the problem indicator will always be on, together announce the order to break the high voltage and stop closing, and store the problem ...
|
|
Key points of LS power BKN circuit breaker design
(1) The cooperation between the circuit breaker and the circuit breaker should consider the instantaneous trip device action value of the superior circuit breaker, which should be greater than the maximum expected short-circuit current at the outlet end of the lower circuit breaker.
|
|
Manufacturing Automation Terminology – LS Electricity Generation
I/O Points:
When discussing control systems, I/O points are a term that is often heard. It refers to the input/output point, I stands for INPUT, which refers to the input, and O stands for OUTPUT, which refers to the output. The inputs/outputs are for the control system, and the input refers to the ...
|
|
Inverter harmonic suppression method - LS power generation
1. Install an appropriate reactor
The input side and the output side of the inverter are connected in series with suitable reactors to absorb harmonics and increase the impedance of the power supply or load, so as to achieve the purpose of pressing harmonics to reduce electromagnetic radiation in the transmission process. After pressing the harmonic current, the power factor is changed from the original ...
|
|
Inverter control motor operation method - LS power generation
When the main circuit of the inverter is connected to the power line, in order to control the operation of the motor, it is also necessary to connect the relevant terminals to the peripheral control circuit, and set the parameters of the inverter's starting method to the external operation form.
The inverter controls the motor to run, and there are two common methods, which are to turn on the ...
|
|
The difference between servo drive and frequency converter - LS produces electricity
Servo drives and frequency converters are defined differently
The driver, also known as servo manipulator and servo amplifier, is a kind of manipulator used to control servo motors, and its function is similar to that of a frequency converter acting on a general communication motor. It is part of the servo system, mainly used for high-precision positioning ...
|
|
The role of the inverter - LS generates electricity
1. The inverter can adjust the power of the motor and complete the variable speed operation of the motor, so as to achieve the purpose of saving electricity. For example, it is reflected in the centrifugal fan and water pump, when the centrifugal fan and water pump use the frequency converter, the operator can convert the frequency to regulate the speed, and can easily control the flow rate according to the need, so as to save ...
|
|
Precautions for inverter installation tips - LS power generation
When the line power supply exceeds the driver's kV-A rating by 10 times, add a line reactor.
A 3% impedance line reactor should be used to reduce power line transients caused by capacitor switching, line notching, DC bus overvoltage tripping, and inverter overcurrent and overvoltage conditions. Line...
|
|
DC motor troubleshooting - LS power generation
1. The speed of the motor slows down, and the cause of the problem of sound disorder may occur in the electronic speed stabilization device and the motor itself. If there is no problem with the power supply, most of the motor itself has a problem. It can be repaired by replacing the new motor and dismantling and repairing the motor. Dismantling and repairing the motor ...
|
|
Brake unit, brake resistor function - LS generates electricity
Brake unit:
The function of the braking unit is to turn on the energy-dissipating circuit when the voltage Ud of the DC circuit exceeds the specified limit (such as 660V or 710V), so that the DC circuit can release energy by thermal energy after passing through the braking resistor. The braking unit can be divided into built-in and external, the former is ...
|
|
The Importance of Welding in Inverter Maintenance – LS Generates Electricity
Whether the welding skills of the inverter repair personnel are excellent is directly related to the quality and results after repair. If the welding quality is not up to standard during repair, the pins of the components will be broken when the components are disassembled, the printed circuits on the PCB will be damaged, the components will not be soldered firmly when the components are installed, and the two components ...
|
|
The choice of inverter power - LS produces electricity
1. The power value of the inverter is the most suitable for the power value of the motor, so as to facilitate the operation of the inverter at a high power value.
2. When the power classification of the inverter is not the same as the power classification of the motor, the power of the inverter should be as much as possible.
|
|
The difference between multi-function inverter and general-purpose inverter - LS produces electricity
With the deepening of factory automation, the high efficiency and low cost of active warehouses, elevators, transfer systems, etc., as well as the high speed, high efficiency and high precision of small CNC machine tools, kneading and forming machines, textile and film machinery, etc.
|
|
LS power inverter function
1. Soft up
The direct launch of the inverter motor has a serious impact on the power grid, and it will also have too high requirements for the capacity of the power grid, which is extremely unfavorable to the service life of equipment and power grid circuits. After the use of inverter to save energy, the use of inverter's speed regulation (V/F) function will make the starting current from a small ...
|
|
Power production PLC installation and wiring skills
The PLC should be kept away from strong disturbance sources such as electric welding machines, high-power silicon rectifier equipment and large-scale power equipment, and cannot be installed in the same switch cabinet as high-voltage electrical appliances.
Power line, control line and PLC power line and I/O line should be separated from the wiring, barrier transformer and PLC and I/O should be selected ...
|
|
The protection measures of the power generator inverter for the motor
The protection of the motor by the power converter mainly includes the following aspects: overvoltage protection, undervoltage protection, overcurrent protection, phase loss protection, inverter protection, overload protection, grounding protection, short circuit protection, overfrequency protection and stall protection.
...
|
|
LS produces common sense of electroplastic case circuit breaker
(1) Tripping
LS electric molded case circuit breaker basically involves the tripping unit in the process of practical application, and the tripping is generally a thermomagnetic tripping or electronic tripping, and we must also understand this different tripping method in advance.
In practice the application ...
|
|
The role of contactors in industrial electricity - LS generates electricity
The contactor is an automatic switch in industrial electricity that uses a button to control its on/off. The contactor consists of an electromagnetic coil, a static armature, a moving armature, a static contact, a moving contact and a fixing bracket. The principle is that when the electromagnetic coil of the contactor is connected to the communication electricity, a strong magnetic field will be generated to make the center of the coil ...
|
|
The main part of LS power inverter is composed
The inverter circuit is the first part of the inverter
The function of the DC central circuit is to smooth the output of the rectifier circuit to ensure that the inverter circuit and the control power supply can obtain a DC power supply with higher quality. When the rectifier circuit is the voltage flow of the central circuit, the primary component is the electrolysis of Darongtong ...
|
|
Contact
working hours
