MV VFD with Charger and Remote Digital Display VFD/VSD AC Drive
- Ref Price:
-
- Loading Port:
- Dalian
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 unit
- Supply Capability:
- 10000 unit/month
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Key Features and Advantages
The high reliability of our VFD systems is achieved by multifold innovations including patented technologies of serial communication, pre-charging, automatic recovery, vertical ventilation & heat dispersion, and so on.
Patented communication technology
The communication between the control system and the power cells is in serial. Compared to parallel communication, the reliability of communication can be improved four times with this innovation.
Patented pre-charge technology
The pre-charging function can effectively control the charging speed of the capacitors, and thus charging shock can be prevented. Together with IGBT intelligent driving technology, the innovations can double the lifetime of the capacitors, from 5 years to 10 years for instance. The maintenance cost can be lowered significantly.
Patented automatic recovery technology
With real-time monitoring, the VFD system can identify the causes of power cell bypass, and automatically restarts once it detects the problems are fixed. It ensures equipment to operate continuously and stably when the bus power supply has instantaneous failure.
Patentedventilation and heat dispersion method
Our VFD’s ventilation system is centralized and vertical. It has significant advantage over the distribution type in terms of temperature field control, air flow distribution, and wind speed uniformity. Since the capacitor units are located at the ventilation ducts, it is estimated that the lifetime of capacitor can be doubled, and thus the overall system service time is prolonged with this cooling mechanism.
- Q: What are the types of power adapter used in notebooks?
- With the increasing popularity of notebook computers, the power requirements have increased. In addition, because the battery capacity (or density) increased, charging requirements also increased - so the laptop computer power requirements have doubled. However, larger and / or hoter power adapters are not an attractive option for millions of users who carry laptops around the world. Attractive is to have a compact, but instantly charged laptop adapter. Of course, it will not produce heat, and will not cost too much. In recent years, the development of electronic products has not increased the hope in this regard, and whether the future revolution can be achieved is still a pending issue. We also want to use a laptop adapter that can be used globally without the need for a 110/220 volt operating voltage selector switch - so the laptop adapter must be designed for truly universal line voltage operation. At the same time, regulators and OEM expectations also play a role.
- Q: Three-phase asynchronous AC motor speed control method
- First, variable pole alignment speed method This method is to change the way to change the stator winding red way to change the cage motor stator pole to achieve the purpose of speed, the characteristics are as follows: With a hard mechanical properties, good stability; No slip loss, high efficiency; Wiring is simple, easy to control, low prices; A level of speed, large difference, can not get smooth speed; Can be used with the regulator speed, electromagnetic slip clutch used to obtain a more efficient smooth speed control characteristics. This method is suitable for production machinery that does not need stepless speed regulation, such as metal cutting machine tools, lifts, lifting equipment, fans, pumps and so on.
- Q: How does the spindle drive system of the inverter realize the positive and negative control of the main pole?
- The general inverter has an external terminal control and communication control two modes optional, select one of them can be completed ah
- Q: Will the 75KW4 pole motor can be used to increase the speed of the inverter?
- China's power frequency 50hz, and the motor rated frequency match, blindly by increasing the frequency of the inverter output motor speed is not desirable, will affect the motor magnetic circuit, work is not normal.
- Q: Motor nameplate on the standard 2P, I set the number of motor pole in the inverter, is set 2 or 4 pole?
- Then the motor nameplate on the standard 2P, it must be 2-pole motor, synchronous speed = 60 seconds x frequency (mainland 50Hz) / pole pairs, you can also look at the rated motor speed, about 2940 rev / 60s, so the inverter Set the number of motor poles, is set 2 pole, I hope you can be satisfied.
- Q: What are the differences and links between the soft starters and the frequency converters, and their respective principles and uses?
- The soft starter is activated by adjusting the voltage and current, and the frequency converter starts the motor by changing the frequency of the power supply. The soft starter can theoretically smooth and gradually start the motor to the maximum speed. No impact current (ordinary start-up current is 6-7 times the rated current) The inverter is best suited for tap water and fans, etc. The soft starter is not suitable for everything except for heavy load start.
- Q: Notebook plug in the power adapter lights, but can not open the machine
- 1. Remove the power adapter and battery, the host does not power the case, hold down the boot button does not move, keep the notebook 30 seconds to release the residual static electricity; 2. Connect the power adapter separately to try to power on; 3. Connect the battery separately to try to boot; 4. If conditions permit, you can plug the memory test.
- Q: Which machines are used for the frequency converter
- Used on a motor that needs to change the speed to change the power.
- Q: How many types of CVT are classified?
- Power transmission Power transmission is basically divided into three categories: One is the electromagnetic sliding type, it is in the asynchronous motor to install an electromagnetic slip clutch, by changing its excitation current to speed, which belongs to a more backward speed mode. Its features simple structure, low cost, easy operation and maintenance: sliding the largest, low efficiency, serious heat, not suitable for long-term load operation, it is generally only used for low-power transmission. The second class is a DC motor type, by changing the magnetic flux or change the armature voltage to achieve speed. It is characterized by large speed range, high precision, but the equipment is complex, high cost, maintenance difficulties, generally used for medium power range (dozens to hundreds of kilowatts), has been gradually replaced by AC motor. Three types of AC motor type, through the pole, voltage regulator and frequency control. The most practical application for the frequency control, that is, using a horn to obtain variable amplitude power supply, and then drive the motor speed. It is characterized by good speed performance, large range, high efficiency, can be automatically controlled, small size, wide applicable power range: mechanical characteristics in the slow speed section of constant torque, low efficiency and low efficiency is not smooth, Maintenance need professionals. In recent years, the inverter as an advanced, excellent speed device rapid development of the mechanical CVT had a certain impact.
- Q: How to learn the inverter debugging and design parameters
- Personally think it is relatively simple, and now the inverter has been more intelligent, and some simple applications, and even do not need to set the parameters.
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MV VFD with Charger and Remote Digital Display VFD/VSD AC Drive
- Ref Price:
-
- Loading Port:
- Dalian
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 unit
- Supply Capability:
- 10000 unit/month
OKorder Service Pledge
OKorder Financial Service
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