Thursday, 23 January 2014

SPEC OIL TDS TRANSFORMER OIL RG





SPEC OIL TRANSFORMER OIL RG

DESCRIPTION
Transformer oils or insulating oils are usually a highly-refined mineral oil that is stable at high temperatures and has excellent electrical insulating properties. The functions of these oils are to insulate, supress corona and arcing as well as to serve as a coolant.

APPLICATION
Transformer oil is used in:
§       oil-filled transformers,
      some types of high voltage capacitors,
§       fluorescent lamp ballasts of high voltage switches
§       and circuit breakers.

BENEFITS
§  Transformer oils helps cool the transformer.  
§  Transformer oils must remain stable at high temperatures for an extended period because it also provides part of the electrical insulation between internal live parts.
§  The oil-filled tank may have external radiators through which the oil circulates by natural convection to improve cooling of large power transformers.

TYPICAL PHYSICAL CHARACTERISTICS
TEST
METHOD

SABS 565 LIMITS
RESULTS
Density @ 20 ◦ C kg/I
I.P. 160
0.895 MAX
0.875
Kinematic Viscosity
I.P.71


@ 40 ◦ C

16.5 MAX
12.4
@ - 15 ◦ C

800 MAX
328
Flash Point C
I.P. 34
140 MIN
153
Pour Point C
I.P. 15
-21 MAX
-33




Neutralisation Value
I.P. 1(B)
0.03 MAX
0.01
Mg KOH/g



Corrosive Sulphur
I.P. 315
Non corrosive
Non corrosive




Electric Strength Kv
I.P. 295
30MIN
72
Resistivity
ASTM D1169


@ 20 C G m


15000
@ 90 C G m


450
Dielectric Dissipation
IEC 250


@ 90 C

0.005 MAX
0.0018




Water Content mg/kg
ASTM
35 MAX
3




Oxidation Test
I.P.307


Neutralisation Value

0.4 MAX
21
Mg / KOH / g



Sludge

0.1
0.035
Colour


Light Amber
Appearance


Clear
Particles

Nil
Nil
Fibres

Nil
Nil


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