Products

TRANSFORMER OIL

Transformer oil or insulating oil is usually a highly refined mineral oil that is stable at high temperature and has excellent electrical insulating properties. It is used in oil-filled power transformers, some types of high voltage capacitors, high voltage switches and circuit breakers. Its function is to insulate, suppress corona and arcing, and to serve as a coolant.

The oil helps cool the transformer. Because it also provides part of the electrical insulation between internal live parts, transformer oil must remain stable at high temperature for an extended period. To improve cooling of large power transformers, the oil filled tank may have external radiators through which the oil circulates by natural convection.

Transformer oil or insulating oil is usually a highly refined mineral oil that is stable at high temperature and has excellent electrical insulating properties.

It is used in oil-filled power transformers, some types of high voltage capacitors, high voltage switches and circuit breakers.Its function is to insulate, suppress corona and arcing, and to serve as a coolant.

The oil helps cool the transformer. Because it also provides part of the electrical insulation between internal live parts, transformer oil must remain stable at high temperature for an extended period. To improve cooling of large power transformers, the oil filled tank may have external radiators through which the oil circulates by natural convection. Sub standard & inferior quality of oil can harm the equipment in many ways and ensure to use only genuine and standard oil procured from reliable source only.

The easiest way to explain the reasoning for proper transformer oil maintenance is to compare a Transformer to a car. A car requires oil for lubrication while a Transformer requires oil for insulation and cooling. Just as a car requires regular checks of both oil quality and oil level, a transformer requires the same proactive treatment. Oil in each instance degrades over time resulting in the potential for failure or costly repair bills.

Oil procure from reliable source or use of “TRANSPOWER” Transformer oil will add years to the life of your Equipments/Transformer.

Applications of Transformer Oil

  • Oil Filled Transformers
  • Circuit Breakers
  • Tap Changers
  • Switches
  • Fuses
  • Oil-immersed electrical equipment
  • Welding set
  • X-ray Machine
  • Submersible Pump<BR

“TRANSPOWER” Transformer oil manufactured by us meets the requirement or specification of following Standard and manufactured as per requirements of customers:

IS-335:93 With latest amendment, Bureau of Indian Standard
IEC-60296 of International Standard
BS-148 Class 1A & II of British Standard
ANSI/ASTM D3487 Type I & II
IEEE


Outstanding Features
Excellent Insulating Characteristics
High dielectric strength
Low Power factor inhibited to minimize the formation of acids and sludge from Oxidation
Better heat transfer properties than other traditional oil
Good low temperature fluidity due to very low pour point
Non corrosive to copper and copper alloys

  • High Flash Point
  • Free from PCBs
  • Compatible with material used in Transformers & equipments
  • Resists oxidation and deposit formation

Sub standard & inferior quality of oil can harm the equipment in many ways and ensure to use only genuine and standard oil procured from reliable source only.

TECHNICAL SPECIFICATION OF TRANSFORMER OIL
S..No.CHARACTERISTICUNIT

AS PER IS 335:93

AS PER BS 148 AS PER IEC 296/60296
1.Appearance Clear & Transparent free from sedimentsClear & Transparent free from sediments MatterClear & Transparent and free from suspended matter and sediments
2.

Density at 29.5°C (Max.) at 20.0°C

g/cm3

g/ml

0.890.8950.895
3.

Viscocity 27 °C,40°C, -30°C

Cst,Mm2 /s

 

27 (max.)under consideration

16.5 max.,1800

12 max.1800

4.Interfacial TensionN/m0.04 min.  
5Flash Point PMCC min.°C140130135
6Pour Point°C-6<-30<-40
7AcidityMg/Koh/g0.030.030.01
8Corrosive Sulphur Non corrosiveNon corrosiveNon corrosive
9

Break Down VoltageAfter filtrations

Rms

30

60

30

50

30

50

10

Oxidation Stability:- Total AciditySludge

KoH/g.%by wgt.

0.4

0.1

1.5

1.0

1.2

0.8

11Dielectric Dissipation Factor90°C0.0020.0050.005
12

Specific Resistance

At 90°C

At 27°C

 

ohm-cm

35X1012

1500X101

  
13

Aging Characteristic,Resistivity 90°C 27°C,DDF @90°C

Min.

Min.

Max

2.5X1012

1500X1012

0.20

  
14Presence of oxidation inhibitor Oil shall not contain anti oxidation inhibitorNot detectableNot detectable
15PCA ContentsMax  3%
16PCB Contents   Not detectable
17Furfural ContentsMax.mg.kg  0.1
18Water ContentsMax.,ppm50 30