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Metal refining and Electrowinning

High Power Transformer Rectifier Systems For Electro Winning and Metal Refining 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 transformer rectifiers and rectifiers in the same facility. Neeltran performs Full Current and Full Voltage factory testing of the transformer and rectifier in their actual configuration prior to shipment.

This combined testing to eliminate integration problems at the site and to assure the shortest commissioning time for your mining or electrowinning rectifier. This results in significant cost savings and produces the highest quality units.

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. Neeltran offers oil cooled transformers with water cooled rectifiers as well as complete water cooled systems including the transformer which is a green solution as well as lower cost.

Markets served for electrowinning and metal refining dc power supply: Copper, Nickel, Zinc, Cobalt, Lithium and other non-ferrous metals that use electrolytic processes.

Rectiifer for mining product Range: 5 kA to 60 kA per 6 pulse unit, multi-pulse configurations with total process up to 270 kAdc available.

  • Latest safety features.
  • Design to all types of environments.
  • Remote monitoring via PLC modem.
  • State-of-the-art Neeltran control boards with Microprocesser based controller available.
  • All types of PLC's available for ease of interface to customer systems
  • Semiconductor Plasma Arc protection available Diode units available.
  • On Load Tap Changer available, in all cases including NLTC tap changer will have its own separate oil supply.
  • 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.
  • System coordination study available.
  • Harmonic studies available.
  • E House style available
  • 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 also with separate building and types of IP or Nema Ratings
  • Turn-key systems available
  • Conservative Transformer design
  • 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)
Three-phase supply voltage main by customer V up to 69000
Maximum power kVA up to 10000
Three phase voltage on the secondary V up to 300
Frequency Hz 50 / 60
NLTC or OLTC No Load and On Load Tap Changers
DC Current A up to 60000
DC Voltage V up to 300
Rectifier Connection ANSI - IEC Bridge or Single Way
Pulses 6 / 12 / 18 / 24 / 36 and more
Control card type Digital or Analog, hard wired or OPTO
Accuracy of the constant current control system ±0.5%
Transformer Cooling ONAN-ONAF-OFAF-OFWF-KNAN
Transformer Manufacturer Neeltran
Transformer Oil Type Mineral, FR3, Silicon
Temp class 105°C
Installation Indoor or Outdoor
Rectifier Cooling Deionized Water to Water / Deionized Water to Air
Rectifier Enclosure Type Compact / Semi-walk in / Walk in
Rectifier Manufacturer Neeltran
Rectifier power section material Aluminum or Copper
Rectifying elements Thyristors / Diodes / IGBT
Redundancy N+X
Line Up Testing Available Combined Test at Neeltran Factory