DGA & Oil Quality Analysis
> Why need to do oil analysis?
Regular testing of transformer and switchgear oil can provide information on electrical properties of its insulating medium and help to detect incipient fault in the equipment.


> Why need to do DGA ?
DGA of insulating oils gives reliable information on the condition of transformers, cables and load tap changers. Using DGA, we accurately measure the concentrations of those nine tell-tale dissolved gases:
  • Hydrogen
  • Oxygen
  • Nitrogen
  • Methane
  • Ethane
  • Ethylene
  • Acetylene
  • Carbon monoxide
  • Carbon dioxide
The concentrations and ratios of these gases could indicate if transformer has Partial Discharge, Thermal Overheating or Arcing conditions. This would help customers plan for timely shutdown to prevent costly repairs and downtime.
> Why need to do oil quality analysis?
Monitoring and maintaining oil quality is paramount to ensure continued reliable operation of your oil-filled equipment.
   
Oil quality:
  • Dielectric Strength
  • Water Content
  • Particle Profile

Ageing:
  • Acidity
  • Interfacial tension
  • Dielectric Dissipation Factor (DDF) & volume resistivity

Assessment on Paper Ageing:
  • Furan Analysis
  • Degree of polymerisation test

Physical and Chemical Properties:
  • Colour and appearance
  • Corrosive sulphur
  • Inhibitor content
  • Passivator
  • Oil Quality Index No.
  • Polychlorinated biphenyls (PCBs)
  • Buchholz relay gas analysis
  • Metal in oil analysis
  • Fourier Transform Infra Red (FTIR)
If you need portable insulation oil testing/analysis instruments for on-site testing, please contact us.
 
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