MV VFD AC Motor Drive 3KV 6KV 10KV

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

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.

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