Transformer OLTC Service

The On Load Tap Changer (OLTC) plays a critical role in maintaining voltage stability and reliable performance of power transformers. Over time, OLTCs experience mechanical wear, carbonization, contact burning, and oil contamination, which can lead to failures if not serviced properly.

Our OLTC Service Includes:

• Inspection & Diagnosis – Checking OLTC contacts, diverter switches, selector switches, and mechanisms.

• Oil Filtration & Replacement – Removing moisture, sludge, and carbon particles to restore dielectric strength.

• Contact Repair & Replacement – Cleaning, repairing, or replacing worn-out/burnt contacts.

• Drive Mechanism Overhaul – Lubrication, alignment, and testing of gears, springs, and linkages.

• Electrical Testing – Conducting resistance, timing, and insulation tests to ensure reliability.

• OLTC Oil Leakage Repair – Sealing and repairing any oil leaks for safe operation.

• Calibration & Functional Testing – Ensuring tap positions change smoothly under load.

Benefits of Regular OLTC Servicing:

• Improved transformer performance & efficiency

• Extended life of the OLTC & transformer

• Reduced risk of breakdowns and outages

• Enhanced safety and reliability of the power system

Applications:

We provide OLTC servicing for distribution transformers, power transformers, and industrial transformers across various sectors including utilities, manufacturing plants, and commercial establishments.