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High Power Transformer Rectifier Systems For Aluminum Applications

Added Benefits of Power Electronic Systems Supplied by Neeltran – Robust and Reliable Power to run your 24/7 processes.

At Neeltran, we design and manufacture our own rectifier-transformers and rectifiers in the same facility for aluminum duty units. This unique capability allows for combined Full Current and Full Voltage factory testing of the transformer and rectifier in their actual configuration prior to shipment. 

An experienced client requires combined testing to eliminate integration problems at the site and to assure the shortest commissioning time. This results in significant cost savings and produces the highest quality units for Booster and Compensation supplies.

Neeltran possesses multi-industry, engineering, and manufacturing experience that helps us to be flexible and design products that meet your specific technical and safety requirements. Please call us for your aluminum smelting power supply needs.

  • Latest safety features
  • Design to all types of environments and contamination
  • Remote monitoring via PLC modem
  • State-of-the-art Neeltran fast response control boards with Microprocesser based controller available
  • All types of PLC's available for ease of interface to customer systems
  • Free Wheeling Diode
  • Semiconductor Plasma Arc protection available
  • Design to local environment, altitude and cooling conditions with all cooling system types available
  • Mutliple DC current measurement types available
  • EMF, RFI and Magnetic studies available
  • FEM analysis available
  • Harmonic studies available
  • E House style available
  • Complete ANSI and/or IEC testing available
  • On Load Tap Changer available, in all cases including NLTC tap changer will have its own separate oil supply
  • Based on specifications we can conform to ANSI, IEC, IEEE,NEMA, CSA, BS, AS, JS, CE etc...
  • Design to seismic zone and altitude
  • Walk-in metal or aluminum enclosures available with all types of IP or Nema Ratings
  • Conservative Transformer design (dry, water or oil type)
  • High Efficiency units with low operating temperatures
  • Conservative selection and specially developed water cooled thrysitor system provides unmatched reliability
  • N-1 SCR's with no need for matched devices
  • Modular and scalable design
  • Modernization and component reduction improvements leads to best MBTF
  • Multi-pulse configurations available
  • Superior short circuit withstand
General Specifications Data Sheet PDF Data Sheet PDF (Spanish)
Standards not limited to ANSI / IEEE / IEC
Three-phase supply voltage main by customer Vac to 69000
Three phase voltage on the secondary Vac to 2000
Maximum power kVA 65000
Frequency Hz 50 / 60
Rectifier Connection Bridge or Star
Pulses 6 / 12 / 18 / 24 / 36 and more
Rectifier power section material Aluminum or Copper
DC Current Adc 500000
DC Voltage Vdc 2000
Control card type Digital or Analog, hard wired or OPTO
Metering Shunt / LEM / Primary CT
Rectifying elements Thyristors / Diodes
Transformer Cooling Oil to Water / Oil to air
Transformer Oil Type Mineral / FR3 / Silicon
Rectifier Cooling Deionized Water to water / Deionized Water to air
Installation indoor or outdoor
Transformer Manufacturer Neeltran
Rectifier Manufacturer Neeltran
Line Up Testing Available Combined Test at Neeltran Factory