Naftas ® Lubricants

Transformer oil

Naftas® Transformer Oil is a highly oxidation-resistant oil that can be used in a variety of electrical systems. It is designed as an insulator and cooling medium for electrical equipment and has good heat transfer performance for cooler operation and longer service life. It is a highly refined electrical insulating oil for use in oil-immersed transformers, capacitors, tap changers, and circuit breakers where the equipment manufacturer specifies a Type II inhibitor oil that meets the requirements of ANSI / ASTM D3487-09.

Products are packed in barrels with a capacity of 205 L

naftas oil barrrel

Transformer oil

The perfect oil for all kinds of transformers

  • Key features:
  • Excellent insulating properties
  • High dielectric strength
  • Low power factor
  • Resists oxidation and deposit formation
  • Excellent low-temperature properties
  • Compatible with materials used in transformers
  • Does not contain any PCBs
barrel icon

Available package

naftas transformer draw

Mineral ISO Grade: 10

Typical Properties 
ISO Grade10
Specific Gravity @ 60°F0,887
Density, lbs/gal @ 60°F7,39
Color, ASTM D15000,5
Flash Point (COC), °C (°F)160 (320)
Pour Point, °C (°F)-60 (-76)
cSt @ 40°C9,6
cSt @ 100°C2,3
SUS @ 100°F60,3
SUS @ 210°F34
Viscosity Index19
Acid Number, ASTM D974, mg KOH/g<0.01
Aniline Point, ASTM D611, °C (°F)75 (167)
Corrosive Sulfur, ASTM D1275BNon-corrosive
Dielectric Breakdown Voltage (2) 
Disc Electrodes, 60 Hz, ASTM D877, kV40
Oxidation Stability, RPVOT, ASTM D2272, minutes280
PCB Content, ASTM D4059, wt %None
Power Factor @ 60 Hz, ASTM D924 
@ 25°C (77°F), %0,003
@ 100°C (212°F), %0,074
Water, ASTM D1533, wt %0,0015

Licenses & Approvals

Transformer Oil meets the requirements of the following industry and OEM specifications:
ANSI/ASTM D3487-09 Type II Inhibited Oil
British Standard BS 148, Class 1A
Federal VV-I-530A, Class II Specification
GE A13A3A2 (10CA)
International Standard IEC 60296
NEMA Type II (obsolete)
Westinghouse Specification PDS 55822AG