Tranoil Class I

National Transformer Oils are developed from Napthenic Base Oils having excellent Electrical properties to meet British Standards and related specifications for Electrical Insulating Oil.

Features

  • Ensures good insulation of Electrical Conductors.
  • Prevents arcing between Electrodes.
  • Minimizes di electric loss.
  • Effectively cools Transformer Coils.
  • Provides long service life.

Performance Levels

  • Meets
  • British Standards BS : 148 : 1984 Class I (Unihibited)
  • International Electro Technical Commission Standard - IEC 296 (1982) Class I

 

Applications


Recommended for Electrical Insulating Oil applications such as Transformers & Oil immersed switchgear where an oil meeting BSI, IEC or other comparable specification is required by the equipment manufacturer or user.

Typical Characteristics

Characteristics Test Method Typical Value
Appearance IEC-296 Clear free from sediments and suspended matter
Density, Kg/dm3 @ 20 °C ISO - 3675 0.829
Flash Point, (PMCC) °C ISO - 2719 154
Kinematic Viscosity ISO - 3104  
cSt@ 40 °C   9.02
cSt@ -15 °C   126.28
Pour Point, °C ISO - 3016 <-33
Neutralization Value , mg KOH/g IEC - 296 0.0037
Corrosive Sulphur ISO - 5662 Non-Corrosive
Water Content, ppm IEC 814 22 ppm
Antioxidant Additives IEC 666 Non detectable
Oxidation Stability (164 hrs @ 100 °C) IEC 1125A  
a) Total acidity, mg KoH per gm of oil   0.17
b) Sludge, % by mass   0.01
Break down voltage, as delivered KV IEC 156 56
Dissipation factor, at 90 °C and 40 Hz to 62 Hz IEC 247 0.0006
Gassing tendency at 50 Hz after 120 min, mm³/min IEC 628A 4
Interfacial Tension mN/M @ 25 °C ISO 6295 44x10-3


Handling, Health And Safety
Lubricant consisting of highly refined mineral oils with specific additives. In normal conditions of use this lubricant presents no particular toxic hazard. All lubricants, of any kind should be handled with great care, particularly avoiding any contact with the skin.

Prevent any splashing and keep away from combustible materials. Store under cover and away from any risk of pollution. Disposes off the used oil correctly, don’t pour down drains, into watercourses or the soil.

 

Shelf Life For Our Products Is Five Years From The Production Date