INTANK ONLOAD TAPCHANGERS
(OLTC) FOR TRANSFORMERS

OVERVIEW

  • Manufactured since 1997 to the design of ELIN OLTC GmbH
  • Type tested as per IEC: 60214, IS: 8468
  • For ratings upto 400 kV, 500 MVA
  • Suitable for ester fluid filled On Load Tapchangers.
  • Compatible for SCADA and all modern data communication equipment and systems.
  • Available in several configurations:

 

INTANK ONLOAD
TAPCHANGER TYPES

IS

  • Legacy product manufactured to ELIN design.
  • Available in various combinations of step voltages and currents upto 35 positions.
  • Suitable for linear, coarse-fine and reversing type of windings.
  • Applications are mostly in transmission/ network transformers.
  • Commonly used for maintaining grid voltage.
  • Also suitable for furnace application, where number of operations are large.
  • Tapchanger rating upto 300 kV, 2100 A suitable for transformers of 765 kV.

ID

  • Intank Onload Tapchanger suitable for special design of legacy transformers used in transmission systems.
  • Available in various combinations of step voltages and currents upto 23 positions.
  • Suitable for linear type of windings.
  • Applications are mostly in transmission/ network transformers.
  • Tapchanger rating upto 123 kV, 400 A.

IJ

  • Compact Ontank On load tapchanger suitable for distribution transformers used in Compact/
  • Unitized Substations.
    Supplied with inbuilt online filter to enhance life.

IV Type

  • Selector switch type intank On Load
  • Tapchanger, suitable for distribution, sub-transmission and transmission range of applications.
  • Available in various combinations of step voltage and currents upto 27 positions.
  • Suitable for linear, coarse fine and reversing type of transformer windings.
  • Applications are mostly in transmission or industrial transformers.
  • Tapchanger rating upto 123 kV, 500 A suitable.

IM Type

  • Alternative to ‘S’ type tapchanger.
  • Available in various combinations of step voltages and currents for different number of steps.
  • Suitable for linear, coarse-fine and reversing type of windings.
  • Applications are mostly in transmission/ network transformers.
  • Commonly used for maintaining grid voltage.
  • Tapchanger rating upto 300 kV, 1800 A suitable for transformers of 765 kV.

SYSTEM COMPONENTS

Drive Mechanism

  • Drive Mechanism suitable for On Load Tapchangers of CTR make.
  • Available for different gear ratios and number of turns of handle per tapchange.
  • Drive mechanisms are also available for legacy products like ELIN, etc. tapchangers with customization as per site requirement.

APPROVALS / COMPLIANCES

  • Reputed consultants
  • IS 8468
  • IEC 60214-1
  • ISO 9001:2008 Certified
  • Transformer Manufacturers
  • Domestic Utilities
  • Private And Public Sector Companies
  • Railways
  • National Thermal Power Corporation (NTPC)
  • Power Grid Corporation Of India Limited (PGCIL)
  • State Electricity Boards

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