Transformer Oils

HP TRANSFORMER OILS

HP TRANSFORMER OILS

TRANSFORMER OILS

Meets specifications :

HP TRANSFORMER OIL exceeds IS: 335:1993 (Reaffirmed 2005) performance levels. It also meets IS:335-2018 TYPE II UNINHIBITED.

Detail Description

HP TRANSFORMER OIL is designed for human safety and free from carcinogenic Poly chlorinated Bi-phenyls (PCB) and Poly aromatic hydrocarbon (PAH).

PROPOSED USAGE

  • Electric transformers
  • Switch gears
  • Circuit breakers which require insulating fluids
  • Has very high oxidation stability
  • Excellent ageing properties resulting in long product life

Physico-chemical properties

PROPERTIES HP TRANSFORMER OILS
Appearance Clear and transparent and free from suspended matter of  sediments
Density at 29.5 ºC, g/cc 0.8279

Kinematic viscosity, cst

At 27ºC

At 40ºC

 

16.46

11

Interfacial tension at 27ºC 0.044 N/m
Flash point pensky-marten (closed),ºC 172
Pour point,ºC -18

Neutralization value, mg KOH/g

a) Total acidity

b) Inorganic acidity/alkalinity

 

 

Nil

Nil

Corrosive sulphur Non corrosive

Electric strength (breakdown voltage) –kV(rms)

a) New unfiltered oil

 

72

Dielectric dissipation factor at 90 ºC 0.00025

Specific resistance (resistivity)

a) A:90 ºC

b) A:27 ºC

 

750x1012 ohm-cm

11300x1012 ohm-cm

Oxidation stability

a) Neutralization value after oxidation, mg KOH/g

b) Total sludge after oxidation,% by wt.

 

0.4

0.1

AGEING CHARACTERISTICS AFTER AGEING  
Open breaker method with copper characteristics  

Specific resistance (resistivity)

a) A:27 ºC

b) A:90 ºC

c) dielectric dissipation factor at 90 ºC

d) total acidity

e) total sludge

 

350x1012 ohm-cm

19x1012 ohm-cm

0.0025/2.08 DC

NIL

NIL

Presence of oxidation inhibitor,% by wt Absent
Water content, mg/kg(ppm) 50
SK value (%) 1
 

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