FLANGE MOUNTED ONLOAD TAPCHANGERS (OLTC)

OVERVIEW

 
  •  Manufactured since 1966 to the design of   English Electric, UK
  • Type tested as per IEC: 60214, IS: 8468

  • Voltage ratings (Um) from 12kV to 145 kV delta and star application with current ratings upto 600 Amps in 9, 17, 21 upto 33 positions

  • Compatible for SCADA and all modern data communication equipment and systems.

  • Available in several configurations: 

EN 20-02
FLANGE MOUNTED EN16
EO retouched copy
CM DM copy
CK16 copy
IUZE
FQ16 GQ 16
EB16
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FLANGE MOUNTED ONLOAD TAPCHANGER TYPES

    • Selector switch type external/flange mounted
    • On Load Tapchanger, suitable for distribution, sub-transmission and transmission range of applications.
    • Only flange mounted tapchanger suitable for 132 kV delta application.
    • Voltage rating from 33 to 132 kV and current rating upto 600 A.
    • Available in various combinations of step voltage and currents with application for linear, coarse fine and reversing type of transformer windings.
  • 33 kV 21 position linear 300 A
  • Can be used for delta/ star connected transformers.
  • 20 step, 21 position on load tapchanger for sub-transmission and distribution transformers.
  • Suitable for furnace application, where number of operations are large.
  • Commonly used for applications where fine voltage regulation is required over a wide range of voltage variation.
  • 11 kV 9 position linear 300 A
  • Can be used for delta/ star connected transformers.
  • Compact, 8 step, 9 position on load tapchanger for distribution transformers.
  • Used for applications with limited band of regulation.
  • 33 kV 10 position linear 300 A
  • Can be used for delta/ star connected transformers.
  • Compact, 9 step, 10 position on load tapchanger for distribution transformers.
  • Used for applications with limited band of regulation.
    • 11 kV 9 position linear 200 A
    • Can be used for delta/ star connected transformers.
    • Compact, 8 step, 9 position on load tapchanger for distribution transformers.
    • Used for applications with limited band of regulation.
    • 33 kV 17 position 300 A tapchanger with changeover selector.
    • Can be used for delta/ star connected transformers.
    • Compact, 16 step, 17 position on load tapchanger for distribution transformers.
    • Used for applications where fine voltage regulation is required.
    • Suitable for coarse-fine or reversing winding configuration giving desired voltage regulation in limited number of steps.
    • 11 kV 17 position linear 200 A
    • Can be used for delta/ star connected transformers.
    • 16 step, 17 position on load tapchanger for distribution transformers.
    • Commonly used for applications where fine voltage regulation is required.
    • 33 kV 17 position 300 A tapchanger with changeover selector.
    • Can be used for delta/ star connected transformers.
    • Compact, 16 step, 17 position on load tapchanger for distribution transformers.
    • Used for applications where fine voltage regulation is required.
    • 22 kV 17 position linear 200 A
    • Can be used for delta/ star connected transformers.
    • Compact, 16 step, 17 position on load tapchanger for distribution transformers.
    • Low oil volume with limited band of regulation
    • 66 kV 17 position linear 300 A
    • Can be used for delta/ star connected transformers.
    • Legacy product manufactured to English Electric design. 16 step, 17 position on load tapchanger for transmission/ network transformers.
    • Commonly used for maintaining grid voltage.
      Suitable for furnace application, where number of operations are large.
    • 22 kV 9 position linear 300 A
    • Can be used for delta/ star connected transformers.
    • Compact, 8 step, 9 position on load tapchanger for distribution transformers.
    • Used for applications with limited band of regulation.
    • 66 kV 17 position linear 300 A
    • Can be used for delta/ star connected transformers.
    • Optimized 16 step, 17 position on load tapchanger for transmission/ network transformers.
    • Commonly used for maintaining grid voltage.
    • 22 kV 17 position linear 300 A
    • Can be used for delta/ star connected transformers.
    • 16 step, 17 position on load tapchanger for distribution transformers.
    • Commonly used for applications where fine voltage regulation is required.
    • 22 kV 17 position linear 300 A
    • Can be used for delta/ star connected transformers.
    • 16 step, 17 position on load tapchanger for distribution transformers.
    • Commonly used for applications where fine voltage regulation is required.
    • 22 kV 17 position 200 A with changeover selector
    • Can be used for delta/ star connected transformers.
    • Compact, 16 step, 17 position on load tapchanger for distribution transformers.
    • Low oil volume with limited band of regulation.
    • Suitable for coarse-fine/ reversing winding.
    • 132 kV 17 position linear 300 A
    • Can be used at neutral end of star connected transformers.
    • 16 step, 17 position on load tapchanger for transmission/ network transformers.
    • Commonly used for maintaining grid voltage.
    • 33 kV 9 position linear 300 A
    • Can be used for delta/ star connected transformers.
    • Compact, 8 step, 9 position on load tapchanger for distribution transformers.
    • Used for applications with limited band of regulation.
  • 11 kV 17 position linear 200 A
  • Can be used for delta/ star connected transformers.
  • Compact, 16 step, 17 position on load tapchanger for distribution transformers.
  • Low oil volume with limited band of regulation.
    • 33 kV 17 position linear 300 A
    • Can be used for delta/ star connected transformers.
    • Legacy product manufactured to English Electric design. 16 step,
    • 17 position on load tapchanger for sub-transmission and distribution transformers.
    • Suitable for furnace application, where number of operations are large.
    • Commonly used for applications where fine voltage regulation is required.