The Full Form of OLTC is On-Load Tap Changer.
On-load tap changer (OLTC), also known as On-circuit tap changer (OCTC), is a tap changer in applications where a supply interruption during a tap change is unacceptable, the transformer is often fitted with a more expensive and complex on load tap changing mechanism.
OLTC
means
On-Load Tap Changer
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