- Mobilect 39 is a high quality mineral uninhibited insulating oil with very good dielectric properties and oxidation stability intended for transformers, switchgears and other electrical equipment.
Specification and Approvals
Property
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Breakdown Voltage, kV, IEC 60156
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> 30
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Breakdown Voltage, after Treatment, kV, IEC 60156
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> 70
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Corrosive Sulfur, Procedure B, ASTM D1275
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Non Corrosive
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Density @ 20C, kg/L, ISO 12185
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0.883
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Dielectric Dissipation Factor @ 90 C, IEC 60247
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<0.001
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Flash Point, Pensky-Martens Closed Cup, °C, ISO 2719
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148
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Interfacial Tension, mN/m, ISO 6295
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> 40
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Kinematic Viscosity @ 40 C, mm2/s, ISO 3104
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9.5
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Oxidation Stability, Sludge, 164 h, 120 C, mass%, IEC 61125-METC
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0.11
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Oxidation Stability, Total Acidity, 164 h, 120 C, mgKOH/g, IEC 61125-METC
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0.31
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Pour Point, °C, ISO 3016
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-54
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Applications
Mobilect 39 is recommended for use in oil filled transformers andwitchgears in which the oil is required as an insulation medium or as a heat transfer medium.
Mobilect 39 is to be used in applications specifying IEC 60296 (04) General Specifications and reinforced copper corrosion protection (pass ASTM D1275B corrosion test).
Mobilect 39 is not suitable for use in oil filled cables, for special impregnation processes or for use in capacitors.