Provide precise voltage according to the network load without interrupting service. Tap 4 Onload Tapchanger Analyser operates on the principle of Vibro Acoustics. Performs most essential function to maintain an Onload Tapchanger i.e., periodic inspection through a nonintrusive diagnostic equipment. The potential of this diagnosis method is recognized in IEEE. PC57.143 and Cigre A2.34 transformer maintenance guidelines.
- Period base maintenance is now being replaced by condition based maintenance.
- The only moving parts of power transformers are in the On Load Tap Changer (OLTC).
- As such parts are suffer from various aging mechanisms caused by mechanical malfunction, increased contact resistance, contact wear etc.
- New technology seeks to extend the service interval and monitor OLTC condition to avert catastrophic failure, reduce maintenance cost and increase reliability.
- Use of this diagnostic technique reduces required number of maintenance visits, cost, reduction in the number of catastrophic failures and interruptions to supply increasing the reliability of power delivery.
