Medium Voltage Drive VFD 3000KW 3KV HIVERT-Y 3.3/660

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Medium Voltage Drive VFD 3000KW 3KV HIVERT-Y 3.3/660

Improved power quality

Almost sinusoidal input current eliminates the need for additional harmonic filters or active filters on the input side
∙ Compatible with older design of motors allowing retrofit to existing system designs.
∙ Minimal impact of voltage reflection, allowing longer cable length between motor and drive.
∙ Multi-level medium voltage drives minimise stress on motor windings, eliminating the need for additional sine
wave filters

 

 Energy saving

 

Fans, pumps and compressors have load characteristics whereby the power consumed increases as a cubic law with
speed.

 

The optimum way to save energy with this type of load is to control the motor speed with a VFD. This is far more effective as it avoids the waste of energy when fluid flow rate is controlled using a valve or damper.Process control is improved by the use of more accurate, prompt and flexible control of the motor speed.

 

The inherent soft starting ability of a VFD reduces the impact on the network (voltage dips) caused by high starting currents.

 

Substantially greater starting torques can be achieved with a VFD than with a soft starter and with much lower starting current, reducing stress on the motor windings and saving energy.The controlled start-up acceleration rate also reduces themechanical stress on the load equipment.


∙ The VFD operates at a higher input power factor than a directly connected asynchronous motor.


∙ The losses in the VFD converter are low, only 1.5% excluding the transformer.

 

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Q:Why the notebook power adapter can not be universal
First, the interface is different Most laptop power adapter brands have different interfaces, which means that other brands of power adapters can not be plugged into your laptop for power supply. The interface is relatively safe, because at least you will not plug in the current or voltage does not meet the power adapter to the laptop power supply, which led to computer hardware damage.
Q:30 kW 6 pole frequency motor torque is how much
To know what is the use of ah, the inverter motor is the same with the ordinary motor, but to prevent the operation of a low speed plus a fan
Q:Three-phase motor, quadrupole asynchronous motor to 15rpm, the inverter output how many volt voltage? The 4 V
4 volts too little, at least tens of volts
Q:Octopus AC Servo motor can be driven with ordinary inverter?
First look at AC Servo motor motor type, synchronous motor or asynchronous motor;
Q:Laptop power adapter repair how much money
Different notebook power adapter models are different, the price gap is large.   Maintenance costs to see the specific model and damage level position. Generally do not recommend maintenance, it is recommended to replace the more appropriate. If you are not covered by the warranty period, you can repair free of charge. Hands-on ability to recommend self-repair, pay maintenance department recommended. After all, once again a greater chance of damage.
Q:Whether the inverter can control the start and stop of the horizontal monopole centrifugal pump
Inverter general control object is the AC motor, you are the AC motor, then the general inverter will be able to achieve start and stop, select a reasonable power section, a reasonable set of start and stop time can be very good drop protection motor. Can also achieve speed control function.
Q:Will the asynchronous motor pole change the number of speed control can also be combined with the frequency converter
As you said the asynchronous motor after a very logarithmic change can be achieved on the speed of the "coarse tune", and then use the inverter is equivalent to add a "fine tune" device, but it seems a bit expensive, but to To see what you are on the occasion of the worthless.
Q:My Lenovo v450 laptop power adapter should be bad how to match?
Lenovo V450 laptop power adapter is broken, the warranty period is not artificially damaged can be directly to the Lenovo aftermarket replacement adapter can be outside the warranty period to pay maintenance, it is recommended to use the original power adapter the best. Laptop charger (Laptop Charger), that is, laptop charger. The traditional notebook charger can only output a single voltage to a type of notebook computer charging, the industry called the traditional notebook power adapter for the single band notebook charger (mainly in order to distinguish between the universal notebook charger.)
Q:What parts of the inverter composition
Frequency control technology is an important development direction of modern power transmission technology, with the development of power electronics technology, AC frequency conversion technology from theory to practice gradually mature. Inverter not only smooth speed, large range, high efficiency, start current is small, smooth operation, and energy saving effect is obvious. Therefore, the exchange frequency control has gradually replaced the traditional traditional slip speed, variable speed control, DC speed control system, more and more widely used in metallurgy, textile, printing and dyeing, smoke machine production lines and buildings, Water supply and other fields. However, due to the environment, the use of life and man-made operation and other factors, affecting the life of the inverter greatly reduced, while the use of a variety of failures have occurred. Here we are on the composition of the inverter and common problems and countermeasures and we discuss. Generally divided into rectifier circuit, flat wave circuit, control circuit, inverter circuit, and so on several major parts.
Q:The inverter is running independently
. Main working circuit (1) Operation circuit: the external speed, torque and other instructions with the detection circuit current and voltage signal comparison operation, determine the inverter output voltage, frequency. (2) voltage and current detection circuit: isolation with the main circuit potential detection voltage, current and so on. (3) drive circuit: drive the main circuit device circuit. It is isolated from the control circuit to turn on and off the main circuit device. (4) speed detection circuit: mounted on the asynchronous motor shaft speed detector (tg, plg, etc.) signal for the speed signal into the operation loop, according to the command and operation can make the motor running at the command speed. (5) protection circuit: the detection of the main circuit voltage, current, etc., when the overload or over-voltage and other abnormalities, in order to prevent the inverter and asynchronous motor damage

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