MVD1000

Delta medium voltage drive is a high-efficiency, compact, high reliable and energy-saving solution. According to demand of different motors and loads, Delta provides general type and vector control type MVDs, which have a broad range of applications in segments such as power generation, oil & gas, mining, metals, cement, and public facilities. MVD is used to drive medium voltage motors loaded for instance by fans, pumps, compressors, mills, crushers, mixers, and extruders. MVD provides process control, so it can increase production efficiency, reduce energy loss, improve equipment protection, and reduce maintenance cost.

Delta provides customers complete solutions with easily operated variable frequency drives.

 

Applications

Industry Application
Power Generation Forced draft fan, induced draft fan, boiler feed-water pump, cooling water pump, compressor,circulation water pump, compressor, condensator pump
Oil & Gas Gas compressor, electrical submersible pump, pipeline pump, brine pump, feed-water pump
Mining Ventilation fan, baghouse fan, slurry pump, feed pump, gas compressor, blast furnace fan
Metallurgy Forced draft fan (FDF), induced draft fan (IDF), baghouse fan, descaling pump, feed-water pump, booster pump, coiler blast, furnace fan, gas compressor
Cement Kiln IDF, baghouse fan, separator fan, raw mill IDF
Public Facilities FDF, IDF, raw sewage pump, freshwater pump, feed-water pump

 

Features

 

Leading Technology

  • Advanced control functions enhance adaptability against instable grid
  • Multi-pulse input rectification reduces input current harmonic distortion, meeting IEEE 519-1992
  • Advanced drive concept provides multilevel output voltages and enhanced motor operation

 

Protection Features

  • Over current
  • Over load
  • Transformer over temperature
  • MVD over temperature
  • Under voltage / over voltage
  • Motor overload (external)
  • Blower fault
  • High voltage cabinet door open
  • Cabinet air pressure abnormal
  • Output short circuit
  • Input / output phase loss
  • Communication fault
  • Output fault to ground

 

Enhanced Process & Quality Control

  • Built-in proportional integral differential (PID) controller enhances control of process variables such as flow and pressure
  • Ride through and flying start features ensure a more continuous process in spite of input voltage dips
  • Friendly user interface provideeasy-to-use system integration

 

Control & Monitoring Features

  • Frequency reference (Hz)
  • Actual frequency (Hz)
  • Input / output power / current / voltage
  • Cumulative operating hours
  • Drive status
  • Status of system bypass switches and MCB
  • Analog inputs / outputs monitoring
  • Fault / Alert messages
  • Fault diagnosis function
  • Ride-through and flying start functions

 

Lower cost of ownership

  • System efficiency is more than 98.5% (without phase-shifted transformer)
  • Optimized pump and fan operation ensure significant energy savings and short return on investment
  • Integrated transformer enables a three-cable-in-three-cableout installation concept using considerably less engineering effort
  • Reduced mechanical stresses eliminate hammer effect in pipelines and vent ducts, and lowers maintenance cost
  • Multilevel voltages and motor soft start minimize stresses

 

Specifications

Delta MVD1000 is easy to operate and maintain, and offers special features for integration into a broad range of applications.

 

 

 

Input Frequency 50Hz/60Hz (-5%~+5%)
Control Power AC380V (three-phase four-wire) or AC220V, 3kVA
Input current distortion <5% (at rated speed and load, complying with IEEE 519)
Power factor >0.96 (at rated speed and load)
Efficiency >98% (at rated frequency and load, excluding transformer)
Frequency range 0~75Hz
Frequency resolution 0.01Hz
Overload capacity 120% for 1 min every 10 min; 150% stop immediately 
PID function Built-in PID regulator with configurable parameters
Modulation method SPWM/SVPWM
Speed acceleration & deceleration time 0~3000s (configurable)
Function configuration Torque boost, frequency skipping, automatic voltage regulation, failure diagnosis, flying start,system bypass, ride through, multipoint V/F control, power cell bypass (optional), space heater synchronous transfer switch (optional)
Analog inputs 0~10V / 4~20mA 2 channels (expandable)
Analog outputs 0~10V / 4~20mA 4 channels (expandable)
Digital I/Os 10 digital inputs and 8 digital outputs (expandable) Communication interface
Communication interface Isolated RS485, Industrial Ethernet (optional), GPRS (optional) Communication protocol, MODBUS, PROFBUS, Others
Operating temperature -5℃ to +40℃ (normal operation)
   
Storage/transportation temperature -40℃ to +70℃
Relative humidity 5% to 95%, non condensating
Altitude <1000m (normal operation), derated use at higher altitude
Cooling Forced air cooling
Protection level IP30 (standard) others can be customized
Regulations and certification IEC, IEEE, GB, CE, GOST

 

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