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    Transformer Oil IS 335-1993

    TRANSFORMER OIL > IS : 335-1993 We offer Transformer Oil manufactured from imported Base Stocks and possessing following advantageous features to make it suitable for use as an electrical insulating & good heat transfer medium and quenching medium for power and distribution electrical apparatus such as Power Transformers, Capacitors, Switch Gears, Circuit Breakers and allied equipments.


    Transformer Oil IS 335-1993

    Sr.No

    CHARACTERISTIC

    SPECIFICATION

    1

    Appearance

    Clear and Transparent and free from suspended matter

    2

    Density @ 29.6°c max. g/cm

    0.89

    3

    Kinematic viscosity @ 27°c max.cst

    27

    4

    Interfacial Tension @ 27°c min., n/m

    0.04

    5

    Flash Point (PMCC) °c min.

    140°C

    6

    Pour Point °c max.

    -6°C

    7

    Neutralisation Value
    (a) Total acidity max. mg KOH/gm
    (b) Inorganic Acidity/ Alkalinity


    0.03
    Nil

    8

    Corrosive Sulphur

    Non-corrosive

    9

    Electric Strength (Breakdown voltage)
    (a) New Unifiltered Oil min.
    (b) After Filtration min.


    30 kv
    60 kv

    10

    Dielectric Dissipation Factor
    (Tan delta) @ 90°c max.

    0.002

    11

    Specific Resistance (Resistivity)
    A) At 90°C Min
    B) At 27°C Min


    : 35 x 1010 ohm – cm
    : 1500 x 1012 ohm - cm

    12 

    Oxidation Stability
    a) Neutralisation Value after Oxidation Max.
    b) Total Sludge after oxidation Max.


    0.40 gm KOH / gm

    0.10 percent by weight

    13 

    Specific Resistance (Resistivity)
    a) At 20°C Min
    b) At 90°C Min.


    2.0 x 1012 ohm - cms
    0.2 x 1012ohm - cms

    14 

    Dielectric Dissipation Factor
    (Tan delta) At 90°C Max.


    0.002

    15 

    Total Acidity Max.

    0.05 mg of KOH / gm

    16 

    Total Sludge Value Max.

    0.05%

    17 

    Presence of Oxidation Inhibitor

    The oil shall not contain antioxidant additives

    18 

    Water Content max.

    50 ppm

    19 

    S.K.Value

    Under consideration