Hope the advantages of Sunland inverter soft start

Dynamic "fast response" DC motors are rectified constrained and excessively high di/dt is not allowed. The asynchronous motor is only constrained by the capacity of the inverter, and the multiple of the forced current can be very high, so the speed echoes quickly, generally reaching the millisecond level, which has surpassed the DC motor in terms of speed. At low frequencies ...

In the process of using bearings, often due to some external factors cause some wear in the rotation of the bearing, and these bearing wear will be completely damaged in the addition of day by day, which requires our maintenance personnel to replace the bearing, and generally form a bearing.

Prior to the introduction of frequency converters, overhead crane operators operated the cranes using contactor-based controls. For low-cycle cranes, the system is equipped with a single or two-speed motor. For cranes with higher load cycles, they use so-called wound rotor motors. ...

1. What does open-loop mean in the use of inverters? The speed detector (PG) is installed on the motor equipment in operation, and the speed response of the actual speed is sent to the control equipment, which is called "closed loop", and the speed detector that does not use PG is called "open loop". Most general-purpose drives are open-loop ...

If the drive has a built-in braking unit and additional braking resistors, it is important to pay attention to the correct wiring of the braking resistors. The braking resistor should be connected between the P terminal and the DB terminal, but not between the P terminal and the N terminal, otherwise the three-phase rectifier bridge will operate at full load when it is not running, resulting in the equipment can not be ...

1. Common faults of motor heating up too high or smoke motor Causes: 1. Excessive load; 2. Two-phase operation; 3. Blocked air duct; 4. The working temperature is too high; 5. Interphase or inter-turn short circuit fault of motor stator winding; 6. Motor stator winding grounding device; 7. The power supply voltage is too high or too low; Overhaul...

Grid-connected photovoltaic inverter is one of the core components of solar photovoltaic power generation system, the main types are: central inverter, modular inverter, micro inverter, DC ...

Before the asynchronous motor is equipped with an inverter, let's take a look at the three major types of mechanical equipment loads: 1. Constant torque load: such as conveyor belt and mixer; When the inverter drags the load of constant torque nature, the torque at low speed should be large enough, and the overload should be large enough. If you need ...

We need to ensure that the capacity of the inverter is matched. First of all, according to the nature of the load, the correct type of inverter is selected. The general principle is what nature of the load characteristics with what characteristics of the inverter. (1) Constant torque production equipment - in the speed regulation range ...

Natural heat dissipation methods are generally used for heat dissipation of small-capacity inverters, because their operating environment should be well ventilated and free of dust and floating objects. The drag targets of such inverters are mostly household air conditioners, CNC machine tools, etc., and the power is small. Still...

1. Classified according to the input voltage level According to the input voltage level, the inverter can be divided into low-voltage inverter and high-voltage inverter, and the low-voltage inverter is common in China with single-phase 220 V inverter, three-phase 220 V inverter, and i-phase 380 V inverter. High-voltage inverters are commonly used in 6 kV, 10 kV transformers.

There are many special faults, which come and go, looming, making it impossible to judge and deal with. At this time, you can clean the circuit board with water or alcohol, and brush off the dust and rust on the circuit board with a soft brush, especially pay attention to the solder joints are dense, and the circuit near the 0 volt copper layer is also ...

Dry-type transformer is a kind of power equipment, and under normal circumstances, dry-type transformer also requires a certain amount of overload, that is, the workload beyond its working ability. So what about the overload of dry-type transformers and how to influence them? ...

1. Why can the rotation speed of the motor be changed freely? The unit of motor rotation speed: r/min the number of rotations per minute, can also be expressed as rpm. Example: 2-pole motor 50Hz3000 [r/min] 4-pole motor 50Hz1500[r/min] Conclusion: The rotation of the motor ...

Founded in 1998, Hope Lansen is a national high-tech enterprise in the fields of energy conservation and environmental protection, new energy, transmission control and intelligent equipment in China, integrating R&D, manufacturing, system integration and customer service. Its products cover high and low voltage frequency conversion control systems, automated production lines and robot transmission systems.

1. The shield wire should be as close as possible to the low potential end, which can be understood in this way, generally we think that the ground potential is "0", and in reality, if there are two grounding terminals, there will be a potential difference between the two grounding terminals at a certain time, and there will be a current between the two wires, which is also a kind of agitation.

In addition to the limitation of the maximum promised current of the special energy consumption braking unit of the inverter, the selection of the braking resistor has no clear correspondence with the braking unit, and its resistance value is mainly selected according to the size of the required braking torque. Power...

1. Make proper grounding After a detailed investigation of the site, we can see that the grounding situation on the site is not very ambitious. The correct grounding can not only be useful for the system to press the external disturbance, but also to reduce the disturbance of the equipment itself to the outside world, which is the most useful for dealing with the disturbance of the inverter.

(1) Rectifier. As one of the most important components of the inverter, the rectifier can convert the AC power into direct current. Its working method is more common to that of a battery charger or arc welder. It uses a diode bridge to limit the communication sine wave to only one direction.