AC Motor Drive MV Variable Frequency Drive 4.16KV

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Product Description:

 

Specifications of AC Motor Drive Variable Frequency Drive

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 AC Motor Drive Variable Frequency Drive

  • 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

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 AC Motor Drive MV Variable Frequency Drive

  • 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 AC Motor Drive Variable Frequency 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:Is the speed of the motor controlled?
Slip motor is composed of ordinary squirrel cage asynchronous motor, electromagnetic slip clutch and electrical control device composed of three parts. Asynchronous motor, the stepper motor is used as the prime mover, and when it rotates, the armature of the clutch is rotated together. The electric control device is a device that provides the excitation current of the slip clutch excitation coil. Electromagnetic slip clutch, which includes armature, magnetic pole and excitation coil three parts.
Q:What is the working principle of high voltage electrodes and frequency converters?
High voltage inverter from high - low - high; low - high; high - high points. The following are the same as the " High-low-high-mode high-voltage inverter is the high-voltage power transformer with a step-down, with low-voltage inverter control, and then step up the transformer voltage to the voltage we use, the supply of high-voltage motor.
Q:Do you need to rectify before switching?
There are two ways to convert frequency, that is, cross and cross the intersection, the latter need a direct current, need no rectification, depending on your DC situation.
Q:How to choose a power adapter
There are several principles for replacing the power adapter. 1. The voltage is the same or similar. Your computer's nominal input voltage is 16V, and the following adapter's rated output voltage is 20V, the difference is large, can not be replaced, may damage the computer. 2. The plug has the same polarity. Your notebook marked on the polarity of the mark is inside and outside the negative, that the adapter I really can not see what is the polarity of the label, you take a closer look if the symbols and notes on the notebook is not the same, it is absolutely not. 3. The rated output current of the power adapter can not be less than the rated input current of the computer. Your computer marked the maximum input current is 3.36A, then you buy the power adapter when you want to buy the output current greater than or equal to 3.36A, the bigger the better, but the greater the output current that the greater the rated power, too much Waste, and very cumbersome, generally slightly larger than on the line, leaving some margin.
Q:Laptop power adapter (no power supply, but indicator light)
With a multimeter to measure the power adapter output interface voltage, no voltage is the adapter problem; a voltage is a notebook problem, and then decide how to do it. The adapter interface is less likely to be bad, but it does not exclude motherboard interface or power control chip problems. The former 50 yuan can get, the latter need a few hundred dollars.
Q:The inverter flat rate transferred to 29, on the submersible pump to burn the coil ?!
4, high-speed motor: high-speed motor running process will produce a large number of harmonics, enhance the output current of the inverter, resulting in a lot of heat. Therefore, the inverter selection is also larger than the ordinary one gear. 5, explosion-proof motor: In some mines, oil extraction environment, the frequency conversion system is explosion-proof motor, the choice of inverter should use the explosion-proof function of the inverter, and the inverter placed in a safer place. 6, the degree of protection: for dust, wet applications, inverter selection should pay attention to its protection level. Or choose Ampang letter AMB inverter, the fan can also run in the water. 7, single-phase motor: When the scene using single-phase motor, the inverter useless. 8, variable pole motor: When the field using variable pole motor, the inverter selection should ensure that the maximum operating current should not exceed the rated current of the inverter
Q:Is the laptop power adapter long-haul?
Can, rarely say there is a power adapter without power and failure, my notebook 5 years, never pull the power adapter plug, never power, there is no problem. Of course, save electricity and care from the point of view, it is recommended to pull the best, because the adapter is still in the working state.
Q:The parameters of the inverter is 4, 6 motor can be used
Variable-frequency (VFD) is the application of frequency conversion technology and microelectronics technology, by changing the motor operating frequency mode to control the AC motor power control equipment.
Q:My Lenovo v450 laptop power adapter should be bad how to match?
In order to ensure quality, we recommend that you buy genuine, you can contact the service station to buy engineers
Q:The inverter control power is also the same, the pole is not the same as the motor 6 or 4 pole can be used?
can use. But in the inverter "motor parameters" to be some changes. Such as the number of poles, rated current.
We are a professional inverter manufacturer integrating R&D, production and sales. With an experienced R&D and production team and sophisticated production lines, our company has become a domestic first-class inverter manufacturer by virtue of advanced technology, excellent quality, scientific management and perfect service

1. Manufacturer Overview

Location Zibo, China
Year Established 2004
Annual Output Value Below US$1 Million
Main Markets Middle-East America; Mid East; Northern Europ; Africa; Southeast Asia
Company Certifications CE;ISO

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
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3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Qingdao
Export Percentage 1% - 10%
No.of Employees in Trade Department 500-999 People
Language Spoken: English; Chinese
b)Factory Information  
Factory Size: Above 50,000 square meters
No. of Production Lines Above 8
Contract Manufacturing
Product Price Range High; Average