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:Servo control system can give the inverter signal,
Servo motor driver can give the inverter signal, with analog output to control,
Q:What is the principle and implementation of the inverter?
AC-DC is relatively simple We know that the diode has a one-way conductivity You can use this feature of the diode into a bridge So that the other end is always flowing into the other end is always out of the way it gets the voltage sinusoidal change of the DC If the need for smooth DC also need to be rectified Simple method is to connect a capacitor
Q:Can the four motors be tuned to 2900 rpm?
Can be used, there are problems you can consult Zhoukou City bearing mechanical and electrical companies, contact the online search Zhoukou City bearing mechanical and electrical companies can search to!
Q:Can different brands of laptop power adapters be generic?
First look at the specifications, voltage, power, current, are matched after looking at the interface, all the same can be used, or else the two are bad.
Q:What is the difference between the collector and the emitter mode?
While the base area should be very narrow So bjt is not a symmetrical device
Q:Inverter 0.2KW, the motor speed requirements down to 4 turn, the motor pole 4 pole. Can the drive drive the motor?
You can only use constant torque type of inverter. Motor selection frequency conversion motor. Driving is no problem
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:What is the base blockade in the drive?
Normal work, the bridge between the upper and lower pipes can not be turned on at the same time, while conduction will occur short-circuit accident. It is necessary to open a tube at the same time block the same bridge of the other pipe base can be safe to work.
Q:Is it possible to use a different laptop's power adapter?
See the adapter is suitable for notebook models to use, the following three conditions for reference: 1. The output voltage of the adapter is the same as that of the notebook. 2. Is the adapter's output current consistent with the notebook's requirements? (Or a little bit of the current is also not.) 3. The size of the joint is appropriate. (If the connector is too loose, will be bad, excessive fever.) For DELL and HP / Compaq and other notebook power adapter, will involve a decoding problem. Please pay attention when the pro to buy. It is said that the market is also very popular universal adapter, a friend bought a LVSUN brand universal adapter LS-PAB90-BC10, with eight joints. Adapter has a liquid crystal display, you can automatically switch the voltage, very smart, with more than a year, has also been used
Q:How many types of CVT are classified?
CVT (Continuously Variable Transmission) technology that is continuously variable technology, which uses the belt and the working diameter of the main and driven wheel to match the power to transfer, you can achieve a continuous change in transmission ratio, resulting in transmission and engine conditions of the most Good match
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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Location Beijing,China
Year Established 1998
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