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Elkem (Bluestar Silicones) BLUESIL™ FLD 604V50 Dielectric Liquid
Categories: Fluid

Material Notes: Description: The following dielectric liquids are used to provide insulation and cooling in submerged transformers:
  • Mineral oils, which have the disadvantage of being inflammable,
  • Silicone oils, esters, etc.
BLUESIL FLD 604V50 is a dielectric liquid consisting of polydimethylsiloxane, whose purity has been checked especially for electrotechnical applications. BLUESIL FLD 604V50 is mainly used as an insulation and cooling medium for transformers and, more generally, for all medium tension equipment (switch boxes, chokes, capacitors, resistors, etc.) when environmental or fire safety problems arise, such as in public places, built-up areas, basements, proximity to water streams, etc. BLUESIL FLD 604V50 offers the following advantages:
  • Excellent dielectric properties
  • Excellent thermal stability
  • Remarkable chemical inertia and strength
  • Good heat transfer properties
  • Non-propagation of fire
  • Not dangerous for man or the environment

Information provided by Bluestar Silicones

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Physical PropertiesOriginal ValueComments
Specific Gravity 0.960 g/cc
Volatiles <= 0.50 %
@Temperature 150 °C,
Time 86400 sec
pH 6.7
Viscosity 14.2 cP
@Temperature 100 °C
 48 cP
@Temperature 25.0 °C
 83.8 cP
@Temperature 0.000 °C
 141 cP
@Temperature -20.0 °C
Kinematic Viscosity 50 cSt
@Temperature 25.0 °C
 85 cSt
@Temperature 0.000 °C
 140 cSt
@Temperature -20.0 °C
Kinematic Viscosity at 100°C (212°F) 16 cSt
@Temperature 100 °C
Surface Tension 20.7 dynes/cm
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 9.10e+12 ohm-cm+5% of mineral oil; AFNOR NF C 27210
 1.50e+14 ohm-cm+2% of mineral oil; AFNOR NF C 27210
 >= 1e+05
@Temperature 23.0 °C
 >= 1.10e+14 ohm-cm
@Temperature 100 °C
 >= 8.10e+14 ohm-cm
@Temperature 75.0 °C
Dielectric Constant 2.68+5% of mineral oil; AFNOR NF C 27210
 2.7+2% of mineral oil; AFNOR NF C 27210
 2.5
@Temperature 100 °C
50/60 Hz
 2.6
@Temperature 75.0 °C
50/60 Hz
 2.7
@Temperature 23.0 °C
50/60 Hz
Dissipation Factor 0.000061+2% of mineral oil; AFNOR NF C 27210
 0.000075+5% of mineral oil; AFNOR NF C 27210
 0.000031
@Temperature 23.0 °C
50/60 Hz
 0.000031
@Temperature 100 °C
50/60 Hz
 0.000051
@Temperature 75.0 °C
50/60 Hz
 
Thermal PropertiesOriginal ValueComments
Specific Heat Capacity 1.525 J/g-°C
Thermal Conductivity 0.150 W/m-K
Melting Point -50.0 °C
Flash Point 216 °C+5% of mineral oil, open cup; AFNOR NF T 60118
 247 °C+2% of mineral oil, open cup; AFNOR NF T 60118
 280 °C
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.402
 
Descriptive Properties
AppearanceClear liquid

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