• 4000Hz 3 Phase Variable Frequency Drive VF Control 3 Level Inverter
4000Hz 3 Phase Variable Frequency Drive VF Control 3 Level Inverter

4000Hz 3 Phase Variable Frequency Drive VF Control 3 Level Inverter

Product Details:

Place of Origin: Gunagdong,China
Brand Name: ZK
Certification: CE
Model Number: SD3000

Payment & Shipping Terms:

Minimum Order Quantity: 1pcs
Price: Negotiation
Packaging Details: Standar
Delivery Time: 5-8 work day
Payment Terms: T/T, Western Union,Paypal
Supply Ability: 200pcs per day
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Detail Information

Inverter Type: Medium Voltage VFD Output Type:: TRIPLE
Application: Motor Product Name: Medium Voltage Inverter
Payment: T/T,Paypal,Western Union Voltage: 660V 1140V 3300V
Control Mode: V/F Control Protection function: Short Circuit Detect After Power On, Input/output Phase Missing, Over Voltage, Over Current, Under Voltage, Over Heat, Over Load Protection.
High Light:

4000Hz 3 Phase Variable Frequency Drive


SD3000 3 Phase Variable Frequency Drive


VF Control 3 Level Inverter

Product Description



AC Three Phase 660V 1140V 3300V Converter Frequency Inverter Medium Voltage Inverter For Motor


Medium Voltage Inverter description


The all-compatible drives are designed to provide customers across industries and applications with unprecedented levels of compatibility and flexibility. They are customized to meet the precise needs of industries such as oil and gas, mining, metals, chemicals, cement, power plants, material handling, pulp and paper, sawmills, marine, water and wastewater, food and beverage and automotive.
They control a wide range of applications such as cranes, extruders, winches, winders, conveyors, mixers, compressors, centrifuges, test bences, elevators, extruders, pumps and fans.


Medium Voltage VFD Feature


1.Substantial reduction of harmonic current on power source side.


2.Total inverter efficiency as high as approximate 97%.


3.Start/stop operation, parameter setting, fault display and data monitoring are performed on the touch panel with simple loader functions.


4.Fault diagnoses are easily performed.


5.Dry-type input transformer is adopted.


6.Higher equipment reliability is achieved by reducing the number of inverter cells by using a single-phase,3-level inverter,etc..


7.Wide range of voltage fluctuation tolerance.


8.Over load tolerance capability(G type model: 150% rated current for 60s, 180% rated current for 2s,P type Model: 120% rated current for 60s,       150% rated current for 3s.)


9.Vector control with a speed sensor is available (as an option) for equipment having high speed and torque accuracy requirements. (option).


10.Simple, built-in auto-tuning functions facilitate testing and adjustment.




The main advantages of the three-level inverter:


1) Simple structure and small size.


2) Compared with the two levels, the device can achieve 2 times the voltage output with the same voltage level.


3) Reduce the common mode voltage of the motor


4) Reduce common mode interference to the power grid.


5) It is convenient to realize the two-way flow of energy and the four-quadrant operation of the motor.


6) The output du/dt is reduced by half compared to the two levels.


7) Compared with the two levels, the number of phase voltage output levels increases and the output harmonics decrease.


Technical specification ​






Control mode

V/F control

Sensorless Vector control 1

Sensorless Vector control 2

Close loop vector control

Starting torque

1Hz 150%

0.5Hz 150%

0.25Hz 150%

180% under 0Hz

Speed adjust range





speed stabilizing





Torque precision





Motor type

General induction motor,permanent magnet synchronous motor (PMSM)



Output volage

3 electric level with low harmonic

Highest frequency

General vector control :400Hz V/f control:4000Hz

frequency resolution

Digital setting: 0.01Hz analog setting: maximum×0.025%

carrier frequency

0.5K~16KHz, the carrier frequency can be adjust by temperature automatically

Frequency reference setting method

Digital of Control panel, analog AI1, AI2, potentionmeter of control panel, UP/DN control, communication, PLC pulse frequency

Accel./decel. characteristic

Linear curve and S curve accel. /decel. mode, range of time: 0.0 to 65000S.

V/F curve

3 mode: linear, multiple points, N Power

V/F separation

2 times separation: totally separation, half separation

DC braking

DC braking frequency: 0.0 to 300Hz, DC braking current: 0.0% to 100%

Braking unit

Built in braking unit up to 15kw, optional is 18.5kw to 75kw, external built in for above 93kw.

Jog function

Job frequency range: 0.0 to 50.0Hz, the accel. and decel. time of Jog

Configuration PID

Easy to perform pressure, flow, temperature close loop control

PLC multiple speed

To achieve 16 segment speed running through built in PLC or terminal control

Common Dc bus *

Multiple inverters use one DC bus for energy balance.

Auto voltage regulation (AVR)

Enable to keep output voltage constant when grid fluctuation

Over load tolerance capability

G type model: 150% rated current for 60s, 180% rated current for 2s,
P type Model: 120% rated current for 60s, 150% rated current for 3s.

stall control when over current, over voltage

Carry out limiting automation for running current, voltage to prevent over current, over voltage frequently

Fast current limit function

minimize the IGBT module broken to protect the inverter, maximum reduce the over current fault.

Torque limit and torque control

"Excavator" characteristics , torque limit automatically during motor running. Torque control is available in close loop vector control mode.





friendly interface

Display Hello when power on.

Multiple function key MK.F button

It can set for Forward Jog, reverse Jog, forward/reverse switch

Timing control function

A total running time and total running time calculating

Motor over heat protection

Accepting motor temperature sensor signal input via AI1 terminals.

Command source

Control panel, control terminals, series communication, switch freely.

Frequency source

Digital setting, analog current/voltage, pulse setting, serial communication, main and auxiliary combination.

Protection function

Short circuit detect after power on, input/output phase missing, over voltage, over current, under voltage, over heat, over load protection.


Application site

Indoor, free of exposure to sunlight, no dusty, no corrosive, no inflammable gas, no oil and water vapor, and water dipping


Lower 1000m

environment temperature

-10℃~+40℃, power derated for 40~50℃, rated current derated 1% for 1℃increasing.


Less than 95%, no water condense.






Construction Materials

1.Kiln head cooling fans.


2.Kiln tail heating fans.


4.Cement rotary kilns.


4000Hz 3 Phase Variable Frequency Drive VF Control 3 Level Inverter 0


Petrochemical Mining


1.Catalytic cracking unit.

2.Hydrogenation compressor.

3.Oil and gas transmission device.



4000Hz 3 Phase Variable Frequency Drive VF Control 3 Level Inverter 1


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