In March 2019, LS Group signed a strategic cooperation agreement with Country Garden to build Cisco Smart City into an innovative model for smart cities. LS Electric will provide power distribution system solutions for Cisco (Guangzhou) Smart City, providing a full set of low-voltage power distribution products such as frame circuit breakers, molded case circuit breakers, vacuum circuit breakers, miniature circuit breakers, leakage circuit breakers, and self-provided switches. to ensure the continuous, stable and safe use of electricity for the project.
At the same time, LS Group's South China Regional Center officially settled in Cisco Smart City, and will continue to explore the power, building, and municipal power distribution markets, and provide customers with perfect application solutions in power distribution systems.
According to the data of the Prospective Industry Research Institute, in recent years, the pilot work of smart cities has been carried out and promoted. According to the list of three smart city pilots released by the Ministry of Housing and Urban-Rural Development, as of early April 2020, the number of smart city pilots announced by the Ministry of Housing and Urban-Rural Development has reached 290.
As a key construction project in Guangdong Province, Cisco (Guangzhou) Smart City is jointly built by Cisco and Country Garden, a Fortune 500 company. It integrates production, learning, research, business and city, and integrates office, business, star-rated hotels, apartments, residences and other formats. In the future, a nationwide smart city model with demonstration effect and industrial pull effect will be built.
A number of key cooperation projects such as Korea LS Group, E&T, China Resources Power, and Haifu Guojin have been officially signed and settled, and will carry out cooperation in smart energy, intelligent operation, and smart 5G here, injecting new impetus, new blood, and new vitality into accelerating the construction of Cisco (Guangzhou) smart city.
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An integral part of an electrical solid state relay
Solid state relays consist of three parts: the input circuit, the barrier (coupling), and the output circuit.
Input Circuit:
According to the different categories of input voltage, the input circuit can be divided into DC input circuit, communication input circuit and AC-DC ...
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Advantages of universal inverter - LS produces electricity
Universal inverters are characterized by their versatility. With the development of inverter technology and the continuous expansion of market demand, general-purpose inverters are also developing in two directions: low-cost simple general-purpose LS inverters and high-performance and multi-functional general-purpose inverters. They have the following characteristics:
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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 ...
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Briefly describe LS ABE203b molded case circuit breaker
The circuit breaker is a fundamental low-voltage electrical appliance, which has the function of overload, short circuit and undervoltage maintenance, and has the ability to maintain the line and power supply. Circuit breaker is an indispensable product in electrical safety. Due to different applications, there are molded case circuit breakers, frame circuit breakers, miniature circuit breakers, etc.
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Introduction to inverter self-learning motor - LS power generation
1. What is a self-learning motor of inverter?
Enter the motor nameplate (voltage, current, Hz rating) in the inverter parameters, and then the inverter actively measures other parameters of the motor.
Second, why should the inverter learn by itself?
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The reason for the overload trip of the inverter - LS generates electricity
1. The load is too heavy, the load carried by the motor is too heavy, or in other words, the resistance torque of the production machinery exceeds the additional torque of the motor.
2. Use improper overload, for example, increase the operating frequency of the inverter to the extra frequency of the motor, and the motor is in the extra frequency.
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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 ...
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Fault analysis of servo motors – LS power generation
1. Problem phenomenon: servo error OL, servo motor can not start, and there is abnormal sound problem analysis and possible causes:
(1) Bearing damage, foreign objects falling and stuck, stator magnet bursting and falling or moving tissue jamming caused by the motor itself.
(2) ...
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Wiring of the main circuit of the inverter - LS generates electricity
1. The power supply should be connected to the R, S, and T terminals at the input end of the inverter, and must not be connected to the output terminal (U, V, W) of the inverter, otherwise the inverter will be damaged. After wiring, it is necessary to clean the trivial wires, which may cause abnormalities, failures and problems, and it is necessary to always keep ...
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Motor & Electrical Control Technology Tips - LS Electricity Production
1. Low-voltage electrical appliances: refers to electrical appliances that play the role of on-off, maintenance, control or regulation in circuits with a rated voltage of 1200V and a rated voltage of 1500V and below.
2. Main electrical appliances: electrical appliances used to send control instructions in the automatic control system.
3. Fuse: ...
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The touch screen controls the inverter steps
1. The touch screen is controlled by PLC inverter
1. At present, the general control of the inverter needs to use PLC to communicate with the inverter, read the information of the inverter, and then the touch screen communicates with the PLC in order to complete the control of the inverter to start, stop, and monitor the operation of the inverter.
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Introduction to the use of PLC for power production
1. It is used for switching control
The ability of PLC to manipulate switching quantities is very strong. The number of points in and out of the control, less than a dozen points, dozens of points, more can be hundreds, thousands, or even tens of thousands of points, because it can be networked, the number of points is almost unlimited, no matter how many points can be controlled, the control ...
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The difference between LS power inverter and servo
An important difference between servo and frequency conversion is that frequency conversion can be without encoder, while servo must have an encoder for electronic commutation.
1. What the two have in common:
The AC servo technology itself is to learn and apply the technology of frequency conversion, and the servo control of the DC motor is based on the ...
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The cause of motor burnout caused by inverter - LS generates electricity
In fact, the problems of the motor are not the cause of the motor itself, most of them are caused by the non-standard debugging of the inverter or the wrong inverter motor when the inverter motor is used, etc., mainly due to the following situations:
1. Put the general motor ...
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The selection principle of AC contactors - LS produces electricity
1. The voltage level of the AC contactor should be the same as the load, and the type of contactor should be suitable for the load.
2. The accounting current of the load should be less than or equal to the additional working current of the contactor.
The turn-on current of the contactor is greater than the starting current of the load, and the breaking current is greater than the load ...
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LS power production contactors are used in this area
LS contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC), which are used in electricity, power distribution and consumption. Contactor in a broad sense refers to the electrical appliances that use the current flowing through the coil to generate a magnetic field and close the contact to control the load in industrial electricity.
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Inverter air boost test step - LS power generation
1. Download the control program.
2. Put the inverter in open-loop experimental mode and set the appropriate parameters.
3. Connect the incoming cable of the inverter. The cable on the output side of the inverter is not connected.
4. Push the high-voltage cabinet to the experimental position, close the switch, and ...
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Inverter fault handling - LS power generation
1. The working temperature of the inverter is high
1. Check whether the ambient temperature of the inverter is too high;
2. Check whether the cooling fan inside the device is working normally;
3. Check whether the ventilation pores and mask grilles are blocked;
4. Check if the load is too heavy.
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The basic method and steps of inverter debugging - power inverter
1. No-load energizing test of inverter
1. Ground the grounding terminal of the inverter.
2. Connect the power input terminal of the inverter to the power supply through the leakage maintenance switch.
3. Check whether the factory display window of the inverter is normal, if it is incorrect, it should be reset.
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Quickly locate the fault method of switching power supply - LS power generation
Due to the short circuit of the load, the failure of the self-oscillation circuit and the loss of control of the protection circuit, the switching power supply will cause the base of the switch tube to be unable to get the switching pulse and intermittent operation, which makes it difficult to locate the shortcomings of SMPS. The difficulty of the repair operation and the improper method will expand the shortcomings, constituting the phenomenon of continuous burning of the switch pipe, etc., ...
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