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On Load Tap Changer

On Load Tap Changer. OLTC. What is an OLTC?. Standard defines OLTC as 3.14 load tap changer (LTC): A selector switch device, which may include current interrupting contactors, used to change transformer taps with the transformer energized and carrying full load. OLTC location. Diverter.

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On Load Tap Changer

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  1. On Load Tap Changer OLTC

  2. What is an OLTC? Standard defines OLTC as • 3.14 load tap changer (LTC): A selector switch device, which may include current interrupting contactors, used to change transformer taps with the transformer energized and carrying full load.

  3. OLTC location

  4. Diverter Selector

  5. Large 400kV unit

  6. On-tank design - older UK

  7. USA typeon tank

  8. Dr. Jansen 1927 patent • Make before break • During that period – circulating current • To minimize it • Resistors • Reactors PA

  9. NLTC • No load tap changer not true • De energized tap changer • DETC

  10. Linear DETC

  11. Rotary DETC

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