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TRANSFORMER OILS

"The core of the core sector"

Our deep sense of tradition and high regard for quality continues. This, along with modern manufacturing facilities and excellent research & development guarantees you a transformer oil that is, to say the least, the best available. Columbia's Transformer

Oil has a dependable track record, with a long in-use life and an excellent flair for quality retention even after long term storage.We serve all major consumers like State Electricity Boards, Transformer Manufacturers, gaint industries and Utilities. Our Transformer Oil is regularly tested at our fully equipped laboratory and is also periodically checked at reputed independent laboratories recognised by the Government and Utilities Our technical personnel are always eager to advise you on storage, handling, servicing, topping and applications.

PROPERTIES

  • Good dielectric properties resulting in minimum power loss
  • High resistivity gives better insulation values between windings
  • High flash point resulting in low evaporation losses due to high thermal stability
  • Excellent interfacial tension for quick water separation
  • Proven resistance to electrical stresses
  • High electrical strength
  • Low viscosity improves cooling
  • Remarkably low sludge and acidity formation in both ageing and oxidation tests gives longer life to oil and equipment during storage and service

APPLICATIONS

Columbia transformer oils are widely used in Transformers, oil immersed

circuit breakers and  switchgears.Columbia transformer oils are is widely used in special transformers designed to operate at elevated temperatures and in low maintenance / maintenance-free transformers for longer periods.These products should not be used where safety specifications require the use of a non-flammable insulating oil.

SUPPLY OPTIONS

Columbia Transformer Oils are available in a variety of packing options to suit customer needs, ranging from Cans, Drums, Tank Trucks, ISO Tank Containers and Flexi bags, Bulk transportation is done via a wholly owned dedicated fleet of Stainless Steel and Epicoated Tankers to ensures prompt delivery and reliability.

Typical test results of our New Insulating Oil / Transformer Oil

 

Characteristics

Test Methods

As per IS : 335
As ammended

Columbia New Insulating Oil

Min.

Max.

1.

Appearance

A representative sample and transparent and free from suspended matter or sediment

The oil shall be clear yellow in colour and free from suspended matter or sediment

Clear, transparent, light

2.

Density @ 29.5oC, g/cm3

IS : 1448 (P-16)

-

0.89

0.81 g/cm3

3.

Kinematic Viscocity at 27oC, cSt

IS : 1448 (P-25)

                -  

27

12.4 cSt

4.

Interfacial Tension, N/m at 27oC

IS : 6104

0.04

             -  

0.051 N/m

5.

Flash Point PMCC, oC

IS : 1448 (P-21)

140

             -  

160o C

6.

Pour Point, oC

IS : 1448 (P-10)

                -  

-6

-12oC

7.

Neutralisation Value

        

a) Total Acidity, mg KOH/gm (Max)

IS : 1448 (P-2)

                -  

0.03

0.0009 mg KOH/g

b) Inorganic acidity / alkalinity

IS : 1448 (P-2)

                -  

Nil

Nil

8.

Corrosive Sulphur

Annex B

Non Corrosive

  

Non Corrosive

9.

Electrical Strength (Breakdown Voltage) KV (rms)

IS 6792

      

a) New Unfiltered Oil

  

30

             -  

68

b) After filteration

  

60

             -  

80

10.

Dielectric Dissipation Factor,  (Tan Delta) at 90oC

IS : 6262

                -  

0.002

0.0003

11.

Specific Resistance (resistivity) Ohm-cm

IS : 6103

      

a) At 90oC

  

35 x 1012

             -  

300 x 1012

a) At 27oC

  

1500 x1012

             -  

3200 x 1012

12.

Oxidation Stability 164 Hours @ 100oC

Annex C

      

a) Neutralisation value after oxidation, mgKOH/gm

                                -  

                -  

0.40

0.091

b) Total Sludge, wt% after oxidation

                                -  

                -  

0.10

0.0087

13.

Accelerated Ageging test 96 hrs @ 115°C (open Beaker Method)

IS: 12177

      

a) Sp. resistance (resistivity) ohm-cm @ 27oC

IS :6103

                -  

2.5 x 1012

61.41 x 1012

b) Sp. resistance (resistivity) ohm-cm @ 90oC

IS :6103

  

2.5 x 1012

6.87 x 1012

c) Dielectric Dissipation Factor @ 90oC

IS: 6262

                -  

0.20

0.034

d) Total Avctivity mg/KOH/gm

IS : 1448 (P-2)

                -  

0.05

0.035

e) Total Sludge Value, % Wt.

Annex. A of IS 12177

                -  

0.05

0.006

14.

Presence of oxidation inhibitior % wt

IS : 13631 (P-2)

The oil shall not contain antioxidant additives.

Not present

15.

Water content ppm (max)

IS : 13567

                -  

50 ppm

15 ppm

16.

S.K. value, % (max)

Annex D, IS: 335

8 Max

1

Our products conforms to
 IEC-296 Class I, BS 148 Class I, VDEO 370, DIN 57370:1978 Class A, IEC 296 Class II, BS 148 Class II, ASTMD 3487 Type I

Note:

1.   The above data is indicated of recent average values only.Minor variation which do not
      affect product performance of quality may be expected in manufacture.
2.   Specific Requirement shall be custom-made on request.

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