MV VFD AC Motor Drive 3KV 6KV 10KV

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Product Description:

 

Specifications of MV VFD AC Motor Drive 3KV 6KV 10KV

 

Direct medium voltage input and output 

 

IGBT power units in series to obtain MV by means of overlap wave 

 

Up to 40% saving rate

 

Application Fields of MV VFD AC Motor Drive 3KV 6KV 10KV

  • Power Generation: Induced draft fan, forced draft fan, condensate pump, feed pump, primary air fan, secondary air fan, booster fan, circulating pump, mill fan, slurry pump etc

  • Cement: draft fan, high-temperature fan, air blower, dust collection fan etc.

  • Metallurgy: blast furnace blower, slurry pump, feed water pump, dust fan, compressor etc.

  • Petroleum&Chemical: Water injection pump, crude oil pump, Compressor, fan, circulation pump, etc

  • Urban water supply: Water delivery pump, water intake pump, water supply pump, sewage treatment industry, self-fractionating pump etc

  • Minerals & Mining: Mud pump, ventilation fan, slurry pump etc

     

Others: Loads such as fan, pump and compressor in pharmaceutical, paper making and wind tunnel test.

Especially for: Fan and Pump

 

Power Plant

Pump, Fans

Steel Plant

Fans

Cement Plant

Fans

 

   

Product Structure of MV VFD AC Motor Drive 3KV 6KV 10KV

AC Motor Drive Variable Frequency Drive consists of By-pass cabinet, Transformer cabinet, power unit cabinet and controller cabinet from left to right.

 

 

AC Motor Drive MV Variable Frequency Drive

 

 

Technical advantages of MV VFD AC Motor Drive 3KV 6KV 10KV

  • No need of extra output filtering device

  • Directly driving the general medium voltage synchronous or asynchronous motor and the temperature of the motor will not be increased.

  • No need of motor derating operation

  • No dv/dt damage to insulation of motor and cable

  • No torque ripple induced by harmonics, and the service life of motors and mechanism devices can be extended

  • No cable length limited when voltage drop is in the allowable range.

Besides the above advantages, AC Motor Drive MV Variable Frequency Drive has the following functions and features:

  • Protection of overload, overheat, over-current, open-phase, grounding, over-voltage, negative sequence.

  • Current limited function

  • Interlock protection of control power supply

  • Two sets of control power hot standby for redundancy

  • Power cell by-pass function

  • Control cabinet automatic bypass function

  • Cabinet door opening alarm function

  • Lock-phase function

  • Synchronizing switch function between variable frequency and power frequency (optional)

  • Soft start of motors, no impact to mechanical equipment and network

  • Voltage source High-high variable frequency drive, it can realize No-step speed regulation, which makes the typical motors into intelligent motors.

  • High quality power input: By phase shifting of the secondary winding and multi-pulse diode rectifier, isolated powers can be acquired and supplied for power cells. (18 pulses for 3/3.3kV, 30/36 pulses for 6/6.6kV, 48/54 pulses for 10/11kV) By using the technique of multi-pulse rectifier, the harmonic current could be eliminated greatly.

  • Power cell communicate with controller through optic-fiber, completely electric isolated

  • Inner set PID regulator, can realize running in closed-loop

  • Multiple communication methods with host computer, isolated RS485 interface, standard MODBUS RTU, communication protocol, PROFIBUS DP (optional), industrial Ethernet communication protocol (optional)

  • Accurately fault records, can inquiry information and locate fault

  • Compact construction, reasonable layout (can do customer-design)

  • Very good protective design to dust, ferrum pulveratum, acid mist, moisture etc.

  • Bypass cabinethas a function of "five-protection", meanwhile, it has a pressure relief channel to ensure the safety of operators.

  • Modularized design of power units, interchangeable and easy to produce and repair.

Technical parameters of MV VFD AC Motor Drive

Series No

Parameters

Value

1

HVF Capacity(KVA)

250~8750kVA

2

Power of adaptive motor(KW)

200~7000KW

3

Input Frequency(Hz)

45~65Hz

4

Rated input voltage(kV)

3/3.3kV/4.16kV/6/6.6kV/10/11kV (+15%~ -35%)

5

THDi at power grid

<3% (Permissible value≤4%)

6

THDu at output side

<3% (Permissible value≤5%)

7

Input power factor

>0.95%(>20% of rated load)

8

Efficiency

>97%(under a rated load)

9

Output frequency(Hz)

0.5~120Hz

10

Output frequency resolution

0.01Hz

11

Rated output current(A)

36~600A

12

Overload capability

120%(1min), 150%(3s), 200%(Immediate protection)

13

Control mode

V/F control or Vector control

14

Logical control I/O signal

16 channels respectively

15

Analog input

0~10V/4~20mA

16

Analog output

0~10V/4~20mA Optional (2 channels)

17

Boolean input/output

Communications/Default point (expandable)

18

Acc & Dec time (S)

0.1~3000s

19

Communication with host

CAN, Profibus, Modbus, RS232, RS485 etc

20

Cooling mode

Forced air cooling

21

Storage temperature

00C~450C

22

Ambient temperature

-350C~+450C

23

Ambient humidity

95%, no condensation

24

Protection grade

IP40

25

Noise

<70DB

 

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Q:What is the motor series parameter setting of the inverter? If it is with the spindle,
The number of motor poles can be estimated by the parameters: 1000Hz corresponds to 60000rpm, According to "Speed in rpm = 60 * Frequency in Hz / (Number of Poles / 2)", Number of poles = 60 * Frequency indicated by Hz * 2 / Speed in rpm = 60 * 1000 * 2/60000 = 2 poles. The same is true with 333Hz and 20000rpm projections. The number of motor poles for the frequency converter should be entered with the number of poles of the motor that are directly connected to the frequency converter.
Q:HP laptop power adapter how to open
HP notebook power adapter for the full size of the design, you can follow the following steps to dismantle: 1, notebook computer power adapter for the injection molding package or with a strong adhesive glue, without any screws, so generally only with violence to crack. However, as long as the method properly, after the dismantling of the power adapter can be restored to the original, do not carefully observe almost no traces of open. 2, the power adapter on the side of the side of the white paper, with an electric knife edge along the power adapter between the gap between the cover, and then hit the electric knife with a hammer, so that the electric knife from the adapter between the upper and lower cover go with. In the different positions of the gap between the upper and lower covers of the adapter, use the tip of the electric knife to be scratched along the gap. When the upper and lower covers are first split, the depth of the tool is deep and then the upper and lower covers of the adapter are separated. 3, then open the shell of the power adapter, you can see the adapter circuit outside the package with a copper shield, with a knife to cut the shielding tape on the tape, and then use the soldering iron shield and the internal circuit board connected to the two Solder joints, you can remove the shield. 4, between the shield and the circuit board is also separated by a layer of thick plastic film, and then cut off the knife after the United States, you can see the circuit board "Lushan true"
Q:How to choose the right inverter?
2, constant torque load Constant torque load equipment requires low frequency inverter torque, dynamic response speed. Inverter 0HZ vector state, to 150% of the torque, to meet the needs of various conditions. For example: a dredger owner bucket inverter system, is a constant torque load, dual motor, and the load overload time is long, so the inverter configuration configuration to enlarge the two models of the G-type machine, while the power supply for the device Machine power supply, the inverter must be configured to input AC reactor.
Q:What is the base blockade in the drive?
After the base is blocked, the power tube is fully closed to protect the power tube.
Q:Motor a speed, the inverter will burn what is going on, the inverter is a large yuan
If you buy the inverter and the motor can match, it is certainly the quality of the inverter.
Q:What parts of the inverter composition
Simply put, the inverter is mainly composed of rectifier (AC variable DC), filter, inverter (DC variable AC), brake unit, drive unit, detection unit micro-processing unit
Q:Taian inverter 3.7KW 380V with 4.0KW 2 pole motor 18000 to 300HZ can it?
With green wave Jie can experience to judge, there may be two possibilities: First, the inverter power selected small. Bipolar motor, not a four-pole motor, the inverter is designed according to the four-pole motor model, so in the inverter selection, can not only look at the power, but also the rated current of the motor;
Q:My laptop can not use the power adapter, and can only use the battery, how is it ah,
1, laptop power adapter can not be used, first check the power outlet, plug, cable has no virtual state, if you can tell the normal equipment damage. Should be repaired. 2, the laptop battery must be charged through the power adapter or directly for the computer power, the power adapter is not missing, if you have experience can turn on the power adapter to see if the fuse is broken, try to update the fuse can be restored. If the integrated circuit is damaged, only updated.
Q:Why G120 inverter to be equipped with 4-pole motor?
On the upstairs that the motor parameters to be set on the possible, such as voltage, current, power, power factor, rated efficiency, rated frequency, rated speed, motor overload factor
Q:Can the inverter be used to control the speed of the DC motor?
For the brush commutation DC motor, the speed of the output torque in a certain circumstances and the input voltage related. For this type of motor, use the inverter to control the output of the rectifier device that supplies power to the motor, which can control the speed. For the brushless DC motor, the controller is in accordance with a certain law to change the form of stator winding power supply to produce a rotating magnetic field to drive the rotor rotation. That is, the DC motor controller outside the part of the AC motor and the structure and the principle has not much difference (see below. For such motors, with the inverter to replace the controller, and control the same as the AC motor Control the speed.
As the leader in the field of medium Voltage Variable Frequency Drive, we have been focusing on providing the integrated solutions of automatic control and energy-saving technology etc. for customers, and its skill levels and market impact of medium voltage VFD are in the world-leading positions. We have provided products and services across more than twenty countries in six continents around the world, taking up the first market share (China) in the past nine years.

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