Photo Gallery  |  Certificate  |  Video  |  Download  |  Live Chat
Call Us : +91 98257 21557  |  Email Us : ambrish@aktpl.com
You are at : Home » Services » Transformer Maintenance
 
 
• Reliance Industries
• NTPC
• NRL
• GAIL
• ONGC
• IFFCO
• ESSAR
• JAYPEE Group
• Indian Railways
• Aditya Birla Group
• Nirma Ltd
• GETCO
• GIPCL
• Torrent Power
• T&r
• Electrotherm
• CGL
to name a few
 

Transformer Maintenance

For Multiple Unit Locations Maintenance To Be Decided On :

  • Size Or Rating
  • Location In The System
  • Criticality Of The Load
  • Service Conditions
  • Load Cycle

Maintenance Schedule

  • Hourly
    • Oil & Winding Temperature
    • Load & Voltage
  • Daily
    • Oil Level
    • Diaphragm , Breather
  • Quarterly
    • Bushings Cracks, Dust
    • Oltc Oil & Drive Mechanism
    • Radiators Leakages, Rusting
  • Yearly
    • Oil Test: Bdv, Ppm, Acidity, Sludge
    • Cable Boxes , Gaskets
    • Relays , Alarms, Earth Resistance
  • 5 Yearly ( Upto 3 Mva )
  • 7-10 Yearly ( Above 3 Mva)
    • Inspect Core & Coil
    • Wash With Clean Dry Oil.

Ensures :

  • A. Normal Life
  • B. Trouble Free Service
  • C. Low Maintenance Cost

Achieved By :

  • Regular Inspection
  • Testing
  • Reconditioning

Life Of A Transformer :

  • Transformer Insulation Is The Life Of The Insulation
  • Transformer Insulation Is Oil And Paper ( Cellulose)
  • Insulation Is Subjected To Electrical, Thermal, Oxidative Hydrolytic And Other Stresses
  • Complex Ageing Process Starts And Progresses With Time For Paper Every 6 Deg.c Increase In Temp. (over 98 Deg.c) Doubles The Aeging I.e Life Becomes Half
  • Oil Can Be Treated Or Replaced

Factors Affecting Life
Moisture

  • Oxygen
  • Impurities
  • Varnishes
  • Slackness Of Windings

Transformer Maintenance
Dos

  • Stock Critical Spares
  • Replace Silica Gel When Pink
  • Maintain Oil To Correct Level
  • Change Oltc Oil Periodically
  • Test Operation Of All Alarms And Trips Yearly
  • Replace Cracked Diaphragms
  • Investigate Whenever An Alarm Or Trip Is Initiated
  • Attend To Radiator Rusting
  • Clean Tank , Radiators Of Oil Patches
  • Clean Bushings Periodically
  • Attend Oil Leaks Immediately
  • Use Only Oil Of Is : 335 And Of Reputed Makes
  • Replace Old Gaskets
  • Maintain Duplicate Earth Connection For Body & Neutral
  • Maintain A Log Book
  • Follow Oem s Guidelines

Dont

  • Bypasss Alarms, Trips Or Any Protection Systems
  • Top Up With Used Oil Or Oil From S/w Gear
  • Avoid Maintenance Shutdown
  • Operate Tap Switch In Energised Condition
  • Energise Without Analysing Gas In Buchholz Relay
  • Operate Transformers With Very Low Ir Values
  • Operate In Parallel When Ratio, Impedance Vary Appreciably
 
 
              
 
Photo Gallery  |  Certificate  |  Video  |  Download  |  Live Chat  |  FAQ's
Home  |  Company Profile  |  Services  |  Products  |  Inquiry  |  Contact Us