DIVYOL® Transformer Oil are highly-refined mineral oil that are stable at high temperatures having excellent electrical insulating properties.
It is used in oil-filled transformers, some types of high voltage capacitors, fluorescent lamp ballasts, electricity & power generations and some types of high voltage switches and circuit breakers.
Its functions are to insulate, suppress corona and arcing, and to serve as a coolant.
DIVYOL®TRANSFORMER OIL IS 335/1993
S.NO
Characteristics
Test Method
Gandhar’s Results
01.
Appearance
Sample of Oil shall be
examined in 100 mm
thick layer at 27 ºC
Clear, Transparent oil,
free from suspended
matter or sediment.
02.
Colour
ASTM
Less than 1
03.
Density @ 29. 5ºC g/cm3
IS: 1448
0.810 – 0.840
04.
Kinematic Viscosity @27ºC
IS: 1448
11- 20 CST
05.
Interfacial tension @ 27ºC N/M
IS: 6104
0.040 min N/M
06.
Flash Point (PMCC) ºC
IS: 1448
150 MIN
07.
Pour Point ºC
IS: 1448
<- 9ºC
08.
Neutralization Value / Total Acidity mg KOH/gm
IS: 1448
0.02 MAX
09.
Corrosive Sulphur (in terms of Classification of
Copper Strip)
IS: 6792
Non-Corrosive
10.
Electric Strength: -
a. New Untreated Oil
b. After treatment
IS-6792
50 - 55 KV
11.
Dielectric Dissipation Factor (tan delta) at 90º C
IS: 6262
0.0005 – 0.0009
12.
Specific Resistance (Resistivity)
a. at 90º C min
b. at 27º C min
IS:335
200 x 1012 ohm cm
2000 x 1012 ohm cm
13.
Oxidation Stability@100ºC
a. Neutralisation Value
after Oxidation
b. Total Sludge after
Oxidation
--------
0.30 MAX
0.05 % MAX
14.
Presence of Oxidation INHIBITOR
--------
Absent
15.
Water Content
IS: 335
35 ppm (Max)
16.
Test of Sample for 96 hours as per ASTM Open
Beaker method with Copper Catalyst
A. Dielectric Dissipation
Factor at 90ºC
B. Specific Resistance
(Resistivity) Ohm-cm
A) at 90ºC
B) at 27ºC
C) Neutralization Value (mgKOH/gm)
D) Total Sludge% by weight.
IS:335
0.01 MAX
5 x 1012
25 x 1012
0.03 MAX
0.02 max
17.
S.K.Value %
ANNEX-D IS: 335
3 MAX
DIVYOL®TRANSFORMER OIL IEC 296 CLASS-IA
S.NO
Description of Test
Test Method
Specification
Typical values as per IEC296
Class IA
01) Physical
Appearance
IEC: 296
Clear, Transparent &
free from sediment.
Clear, Transparent & free from
sediment.
Density@ 20° C. Kg/m3
ISO: 3675
0.810 – 0.860
0.83
Interfacial Tension AT 25 ° C. N/M
ISO: 6295
0.040 MIN
0.045
Kinematic Viscocity.mm2 / s.
ISO: 3104
8 TO 12 @40ºC
750 TO 850 @ -15ºC
11.0@ 40ºC
800 @ - 15ºC
Flash Point(PMCC) ° C
ISO: 2719
140 MIN
160.
Water Content
Mg /Kg. (PPM)
IEC 733
BS: 6470
30 MAX
25
Pour Point
ISO-3016
< - 30ºC
<-30 MAX.
02) Electrical
lectrical Strength(BDV) as delivered
IEC: 156
Clear, Transparent &
free from sediment.
Clear, Transparent & free from
sediment.
Resistivity, MIN. @-cm
IEC: 247
0.810 – 0.860
0.83
Dissipation Factor (Tan Delta) at 50
Hz, MAX.
IEC: 247
BS: 5737
0.00050 MAX
0.0010 MAX
0.0003 @ 27ºC
0.0008 @ 90ºC
03) Chemical
Neutralization Value 9Total Acidity)
mg KOH/g
IEC: 296 /
BS2000 P-1
0.02 MAX
0.0045
Corrosive Sulphur
ISO: 5662
Non Corrosive
Non Corrosive
Aromatic Content %
IEC: 590
MAX 8%
4
04) COxidation Stability for 164
(IEC: 1125
METHOD -A)
Neutralization Value
(Mg KOH/g)
0.40 MAX
0.20
Total Sludge (By Mass %)
0.10 MAX
0.015
05) Oxidation Stability for 164
Hours. 120ºC
IEC: 1125
METHOD -A
Neutralization Value
(Mg KOH/g)
0.75 MAX
0.50
Total Sludge (By Mass %)
0.40 %
0.2
06) Gassing Tendency @ 50 Hz.
AFTER 120 minutes, Max MM2
/ Minute
IEC: 628 –A
BS: 5797
+ 2.5
+2.5
07) Oxidation Inhibitor
ABSENT
ABSENT
Specification Sheet is also available in PDF format.
