TRANSFORMER OILS

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TYPICAL TEST RESULTS

CHARACTERISTICS TEST METHOD AS PER IS:335
AS AMENDED		 COLUMBIA NEW
INSULATING OIL
  MIN MAX  

Our product conforms to IS 335 : 1993
Note:
1. The above data is indicative of recent average values only. Minor variations which do not affect product performance or quality may be expected in manufacture.
2. Specific requirements can be custom-made on request.

Appearance A representative sample of the oil shall be examined in 100 mm thick layer at 27°C The oil shall be clear and transparent & free from suspended matter or sediment Transparent, clear and light
Density @ 29.5°C IS : 1448 (P-16) - 0.89 0.840 g/cm3
Kinematic Viscosity @ 27°C, cSt IS : 1448 (P-25) - 27 12.4 cSt
Interfacial Tension N/m @ 27°C IS : 6104 0.04 - 0.048 N/m
Flash Point PMCC °C IS : 1448 (P-21) 140 - 160°C
Pour Point °C IS : 1448 (P-10) - -6 -15°C
Neutralisation value
a) Total Acidity, mg KOH/gm (Max)
b) Inorganic acidity/alkalinity 		IS : 1448 (P-2)
-

-
0.03

Nil
0.0009 mg KOH/g

Nil
Corrosive Sulphur Annex B Non Corrosive Non Corrosive
Electrical Strength (Breakdown Voltage) KV(rms)
a) New Unfiltered Oil
b) After Filteration
IS 6792
30

60
-

-
68

72
Dielectric Dissipation factor, (Tan Delta) at 90°C IS : 6262 - 0.002 0.0003
Specific Resistance (Resisitivity) Ohm-cm
a) At 90°C
b) At 27°C 		IS : 6103
35 x 10 12

1500 x 10 12
-

-
300 x 10 12

13200 x 10 12
Oxidation Stability 164 Hours @ 100°C
a) Neutralisation Value after Oxidation
b) Total Sludge 		Annex C

-

-

-

-

0.40

0.10

0.091

0.0087
Accelerated Ageing test 96 hrs @ 115°C (open Beaker Method)
a) Sp. Resistance (Resistivity) ohm-cm @ 27°C
b) Sp. Resistance (Resistivity) ohm-cm @ 90°C
c) Dielectric Dissipation Factor @ 90°C
d) Total Acidity, mg/KOH/gm
e) Total sludge value, % Wt 		IS : 12177

IS : 6103

IS : 6103

IS : 6262

IS : 1448 (P-2)

Annex. A of IS 12177

-

-

-

-

-

2.5 x 10 12

0.2 x 10 12

0.20

0.05

0.05

61.41 x 10 12

6.87 x 10 12

0.034

0.035

0.006
Presence of oxidation inhibitor % wt IS : 13631 The oil shall not contain antioxidant additives Not present
Water Content ppm Max IS : 13567 - 50 ppm 15 ppm
S.K.Value, % (Max) Annex D, IS : 335 8 Max 1

NEW INSULATING OIL / TRANSFORMER OIL

TEST DESCRIPTION TEST METHOD SPECIFICATION LIMITS TYPICAL VALUES

Our product conforms to IEC 60296:2003/BS-148:1998
Note:
1. The above data is indicative of recent average values only. Minor variations which do not affect product performance or quality may be expected in manufacture.
2. Specific requirements can be custom-made on request.

Appearance BS 148-1998 Transparent, clear, bright, odourless liquid free from suspended impurities Transparent, clear, bright, odourless liquid free from suspended impurities
Colour ASTM D 1500 L 0.5 0.5
Kinematic Viscosity, mm2/S (max)
At 40°C ISO 3104 11 9.0
At -30°C ISO 3104 1800 298
Flash Point °C,(Min), PMCC ISO 2719 130 150
Pour Point °C ISO 3016 ≤ - 45 -45
Density kg/dm3, @ 20°C (Max) BS EN ISO 3675 0.895 0.88
Neutralisation Value mg KOH/g (Max) IEC - 62021 0.01 Nil
Interfacial Tension @ 25°C ISO - 6295 0.04 Max 0.045
Corrosive Sulphur DIN 51353/BS 5680 Non corrosive Non corrosive
Water Content, Max mg/kg IEC 60814 - -
a) Bulk - 20 14
b) Drum - 30 22
Anti - oxidant Additives (Sub Clause 2.5) IEC 60666/BS 5984 Not detectable Not detectable
Oxidation Stability, 164 h
Total acidity, mg KOH/g of oil (Max)
Sludge, % by mass (Max)
DDF @ 90°C
IEC 61125 : 1993
(Method C)
IEC - 60247
1.2
0.8
0.5
1.0
0.68
0.36
Break down Voltage, Min IEC 60156
As Delivered (Kv), min - 30 50
After Treatment (Kv), min - 70 70
Dielectric Dissipation factor at 90°C and 40 to 60 Hz (Max) IEC - 60247/61620 0.005 0.0005
Gassing tendency at 50 Hz after 120 min, mm3/min Method A (Max) BS 5797/IEC-60628-A +5 +1
Total PCB content mg/Kg IEC 61619 Non detectable Non detectable
Total Furans mg/Kg, Max BS EN 61698 1.00 Nil
Polycyclic Aromatics % mass, Max BS 2000 3.00 0.5

TRANSFORMER OIL

SR. NO. DESCRIPTION OF TEST UNIT TEST METHOD
AS PER IEC-296		 REQUIRED VALUE MEASURED VALUE

REMARKS: Conforms to IEC-296/1982, Class - I (UNINHIBITED OIL)
1. PHYSICAL
1.1 Appearance - IEC : 296 Clear, transparent
& free from sediment
& suspended matter 		Clear, transparent
& free from sediment
& suspended matter
1.2 Density @ 20°C g/cm3 ISO : 3675 0.895 Max 0.822
1.3 Kinematic Viscosity, Max Cst. ISO : 3104 16.5.0 at 40°C
800 at -15°C		 7.6
400
1.4 Interfacial Tension, at 25°C N/m ISO : 6295 0.04 Min 0.052
1.5 Flash Point °C ISO : 733 140 Min 160
1.6 Water Content Bulk
Water Content Drum		 Mg/Kg IEC : 60814 30 Max
40 Max		 9.2
11.0
1.7 Pour Point °C ISO : 3016 -30 Max -36
2. ELECTRICAL
2.1 Electrical Strength BDV
As Delivered
After treatment 		kVrms IEC : 60156
30 min
50 min
62
-
2.2 Dielectric Dissipation factor
(tan delta) at 50Hz, Max 		- IEC : 60247 0.005 0.0003
3. CHEMICAL
3.1 Neutralization Value (Total Acidity) Mg.KOH/gm IEC : 296 0.03 Max 0.002
3.2 Corrosive Sulphur - ISO : 5662 Non-Corrosive Non-Corrosive
3.3 Oxidation Stability for
164 hrs at 100°C 		- IEC : 61125
3.3.1 Neutralization value Mg.KOH/gm - 0.4 Max 0.07
3.3.2 Total Sludge by mass % - 0.1 Max 0.001
3.6 Presence of Oxidation Inhibitor - IEC : 666 Not detectable Not detected

TRANSFORMER OIL

SR. NO. DESCRIPTION OF TEST UNIT TEST METHOD
AS PER IEC-296		 REQUIRED VALUE MEASURED VALUE

REMARKS: Conforms to IEC-296/1982, Class - II (UNINHIBITED OIL)
1. PHYSICAL
1.1 Appearance - IEC : 296 Clear, transparent
& free from sediment
& suspended matter 		Clear, transparent
& free from sediment
& suspended matter
1.2 Density @ 20°C g/cm3 ISO : 3675 0.895 Max 0.870
1.3 Kinematic Viscosity, Max Cst. ISO : 3104 11.0 at 40°C
1800 at -30°C		 8.0
900
1.4 Interfacial Tension, at 25°C N/m ISO : 6295 0.04 Min 0.050
1.5 Flash Point °C ISO : 2719 130 Min 148
1.6 Water Content Bulk
Water Content Drum		 Mg/Kg IEC : 60814 30 Max
40 Max		 8.1
10.0
1.7 Pour Point °C ISO : 3016 -45 Max -45
2. ELECTRICAL
2.1 Electrical Strength BDV
As Delivered
After treatment 		kVrms IEC : 60156
30 min
50 min
60
-
2.2 Dielectric Dissipation factor
(tan delta) at 50Hz, Max 		- IEC : 60247 0.005 at 90°C 0.0002
3. CHEMICAL
3.1 Neutralization Value (Total Acidity) Mg.KOH/gm IEC : 296 0.03 Max 0.003
3.2 Corrosive Sulphur - ISO : 5662 Non-Corrosive Non-Corrosive
3.3 Oxidation Stability for
164 hrs at 100°C 		- IEC : 61125
3.3.1 Neutralization value Mg.KOH/gm - 0.4 Max 0.08
3.3.2 Total Sludge by mass % - 0.1 Max 0.002
3.6 Presence of Oxidation Inhibitor - IEC : 666 Not detectable Not detected