on load tap changer working, transformer tap changer operation,oltc transformer working

✓ What is OLTC in transformer?
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.
✓ Why is Oltc needed?
The purpose of a tap changer is to regulate the output voltage of a transformer. It does this by altering the number of turns in one winding and thereby changing the turns ratio of the transformer. ... An OLTC varies the transformer ratio while the transformer is energized and carrying load.
✓ How does a no load tap changer work?
No-load tap changers (NLTC), also known as de-energized tap changers (DETC), off-load tap changers, and, off-circuit tap changers (OCTC), employ manually operated switching equipment that changes the transformer turns ratio of the three phases simultaneously and by the same amount.
✓ What is on load and off load tap changer?
On load tap changers are the ones where taps in the transformers change automatically as per loads variations. The off load tap changers are Non automatic and are those transformers where you can change the tap manually, if required, but with the transformer completely DE-energized.
✓ Where is Oltc connected?
On Load Tap Changer or OLTC
The tapping arrangement, is placed in separate divertor tank attached to electrical power transformer main tank. Inside this tank, the tap selectors are generally arranged in a circular form.
✓ RTCC panel full from - REMOTE TAP CHANGER CONTROL PANEL.
✓ What is Rtcc panel in transformer?
“Remote Tap Changer Control “which is a Programmable device to control the output of the transformer through OLTC unit fitted in the transformer through control cables.
✓AVR panel full from - Automatic voltage regulator.
✓ What are the types of AVR?
There are two types of automatic voltage regulators. There are two types of motor, the Relay type and the Servo Motor type. Relays and semi-conductors are used to regulate the voltage in a Relay type AVR.
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i I'm facing issues, rttc showing on progress