Transformer oil – ERAM 31

ERAM 31 is an electrically insulating oil with no deterrents, which is manufactured according to customers’ requirements. (In accordance with former IEC 296 standard)

Test Method Typical Value Property
1- Function
ISO  –  3104 10 Kinematic  Viscosity ,mm2/s , at 40 oC      
ISO  –  3016 -30 Pour  Point ,oC
IEC  – 60814 10 Water  Content, ppm
IEC  –  60156 75 Breakdown Voltage              
ISO  –  3675 0.860 Density , at 20  oC ,Kg/dm3
IEC  –  60247 0.003  Dissipation Factor,at90oc
2- Refining/ stability
Clear, Free From Sediment Appearance
IEC  –  62021 0.009 Acidity, mg KOH/g
ASTM  –  D971 36-40 Interfacial tension, mN/m
DIN – 51353 NonCorrosive Corrosive Sulphur
IEC – 62697 Not detectable DBDS, ppm
IEC – 60666 Uninhibited oil Antioxidant additive, wt%
IEC – 60666 Not detectable Metal passivator additive, ppm
IEC – 61198 Not detectable 2-Furfural and related compounds content
 3- Performance
IEC – 61125  C   Oxidation Stability at 120  oC, 164 h
  0.8 Total acidity, mg KOH/g
  0.4 0.3 Sludge, wt% DDF at 90 oC 
4- Health, safety and environment (HSE)
ISO – 2719 142 Flash  Point , oC
IP – 346 Not detectable PCA content, wt%
IEC 61619 Not detectable PCB content, ppm
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