LS Power Information SHOW

	Introduction to the control method of LS power inverter Inverter control method: low-voltage general frequency conversion output voltage is 380-650V, output power is 0.75-400kW, operating frequency is 0-400Hz, and its main circuit adopts AC-DC-AC circuit. Its control methods have gone through the following five generations. 1U/f=C sine pulse width modulation ...
	Parameter setting of LS power inverter The inverter is a high-tech intelligent product, in order to let it complete the specified control mission, it must be set parameters, otherwise, it is like the computer is not installed and used, and it cannot be operated normally. The parameter setting is carried out by the control surface of the inverter. All kinds of inverters ...
	The reason why the inverter cannot be equipped with a leakage protector When using inverters, leakage protectors must not be used. This is a major principle of the use of frequency converters. Some users choose the corresponding leakage protector for the inverter when using the inverter. *The result is: the inverter moves together, the leakage protector acts, and the system can't ...
	Recommended models for power production contactors GMC-6 Contactor GMC-6 Rated voltage: 110V/22OV/380V; GMC-9 Contactor GMC-9 Rated voltage: 110V/22OV/380V; GMC-12 Contactor GMC-12 Rated voltage: 110V/22OV/380V; GMC-18 Contactor GMC-18 Rated voltage 110V/ ...
	LS power inverter parts replacement and its requirements The inverter is composed of many electronic parts, such as semiconductor components, etc., in the operation and maintenance involves the replacement of a related component, because of the composition or physical characteristics of the inverter, it will deteriorate in a certain period of time, so it will reduce the characteristics of the inverter, and even ...
	Analysis of the fault problem of LS power terminal block From the point of view of application, the function of the terminal block should be achieved: it is necessary to conduct the local conduction of the touch part, and the touch is reliable. The insulating part should not be conducted, and it is necessary to insulate it firmly. There are three common forms of fatal problems in terminal blocks: ...
	The difference between overload and overcurrent of the inverter (1) The maintenance objectives are different Overcurrent is mainly used to maintain the inverter, whereas overload is mainly used to maintain the motor. Because the capacity of the inverter sometimes needs to be increased by one or even two gears than the capacity of the motor, in this case, the inverter is not necessarily overcurrent when the motor is overloaded. ...
	Analysis of common faults of LS AC contactors AC contactor is generally used to turn on or off the power supply in the control circuit of electromechanical equipment, it can frequently turn on or off the AC circuit, and can realize long-distance control. The toucher is mainly composed of a contact system and an electromagnetic system, and the problem of AC contactor is generally generated in the coil.
	The working principle of the LS power production module When the LS power generation module is put into operation, its working process is generally divided into three stages, namely input sampling, user program fulfillment and output rewriting. The completion of these three phases is called a scan cycle. During the entire operation, the PLC's CPU repeatedly performs the upper ...
	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.
	LS inverter series and its features LS inverter, the full name of LS communication frequency conversion governor, after supplying a variety of equipment, converts direct current into communication electricity, and changes the voltage and frequency of ordinary power supply input to control the speed of the motor, to meet different industrial needs, and then complete the energy saving and environmental protection of the automation system. ...
	Fatal failure of LS power terminal block From the point of view of application, the function that should be reached is: it is necessary to conduct the local area where the touch part should be conducted, and the touch is reliable. If the insulating part should not be conducted, it is necessary to insulate it firmly. There are three common fatal problems in terminal blocks: ...
	The power of LS power inverter is selected The relationship curve between the load rate β and the power η of the inverter can be seen: when β = 50%, η = 94%; When β = 100%, η = 96%. Although the β has doubled, the η change is only 2%, but it is also considerable for medium to high power (a few hundred kilowatts to several thousand kilowatts) electric motors. The system power is equal to the inverter power ...
	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 ...
	The internal accessories component of the power production circuit breaker 1. Auxiliary contact: the contact mechanically linked with the main circuit of the circuit breaker and the closing mechanism is mainly used for the display of the circuit breaker and the closing status, and is connected to the control circuit of the circuit breaker through the opening and closing of the circuit breaker to control or interlock its related electrical appliances. For example, output to signal lights, relays, etc.
	LS power generation low-voltage universal inverter vector control mode The method of vector control frequency conversion speed regulation is to change the stator current Ia, Ib, Ic of the asynchronous motor in the three-phase coordinate system, after the three-phase - two-phase change, equivalent to the communication current Ia1Ib1 under the two-phase static coordinate system, and then after the directional rotation according to the rotor magnetic field, it is equivalent to synchronous rotation sitting.
	Introduction of LS power products 1. Power-related products: medium, low and high voltage electrical products; (1) Low Voltage Products: Molded Case Circuit Breaker, Air Circuit Breaker, LS Contactor & Overload Relay, Miniature Circuit Breaker, Dual Power Automatic Transfer Switch, Intelligent Motor Protector, Manual Motor Starter, Surge Protection ...
	LS power generation installs the switching power supply step 1. Confirm the location of the device Before the equipment switches on and off the power supply, it is necessary to confirm the location of the equipment, and generally require the equipment to be in a ventilated, boring, non-corrosive gas and dust-free place. 2. Equipment holder The fixed base of the switching power supply is fixed on the orientation of the equipment, and the general ...
	The basic problem of LS electric molded case circuit breaker 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. ...
	Interference phenomenon of LS power inverter 1. As soon as the inverter of the heat exchange station is opened, the pressure transmitter jumps randomly; 2. In the water supply controlled by the inverter, the pressure transformer is used as a signal to collect the pressure, and the pressure transformer is disturbed by the inverter; 3. When the inverter starts the motor, the voltage converter signal is unstable and beats violently; 4. Pressure transformer (4-20 ...
	The working principle of the LS power production module When the LS power generation module is put into operation, its working process is generally divided into three stages: input sampling, user program fulfillment, and output rewriting. The completion of these three phases is called a scan cycle. During the entire operation, the PLC's CPU repeatedly performs the upper ...