Page 248 - Electrician - TT (Volume 1)

ELECTRICIAN - CITS

Conservator
• Cylindrical tank mounted on supporting structure on the roof the transformer main tank.
• When transformer is loaded and when ambient temperature rises, the volume of oil inside transformer
increases.
• Provide adequate space for expansion of oil inside the transformer.
• Also acts as a reservoir for transformer insulating oil.

Tap Changer
• Used for voltage correction by tap changing.
• It may be manual automatic.
• OFF LOAD or

• ON LOAD TAP CHANGER(OLTC)
• Generally provided in HV side to operate with less current

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CITS : Power - Electrician & Wireman - Lesson 41-49 CITS : Power - Electrician & Wireman - Lesson 41-49