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TECHNICAL DATA SHEET MCS-1865 AND MCS-1866
TRANSFORMER FLUIDS
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Fluids for use in liquid-filled transformers should have high dielectric strength, wide operating temperature range, good heat transfer properties, chemical stability and be fire resistant. MCS-1865 and MCS-1866 were developed to provide such characteristics, and are suggested for evaluation as dielectric fluids for transformers.
MCS-1865 and MCS-1866 do not contain polychlorinated
biphenyl (PCB), nor si Lieone -f].uirlsBoth MCS-1865 and
MCS-1866 are synthetic hydrocarbons combined with trichloro -- benzene to give the desired viscosity level.^j These fluids .
have a considerable degree of fire resistance, but are not
tequivalent to askarels in this general characteristic.
J
Technical data on typical laboratory samples are ,, +0 dtvelop fur-lne*-
given below. Additional studies are underway"anddata.
j,--will he mppHed Infra?? Samples are available for preliminary
evaluation. -------- ---------- --------- ----------- -------------- ------------- -----------
standard Disclaim eil CLAUlt. l0$}OoXx t>)
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0205558
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WATER PCB-00034859
TVPIC.AL oata =*ftCS-186!I
ELECTRICAL PROPERTIES
Dielectric strength (ASTM D877) 25C, 0.1 inch gap
>50 KV .
Impulse Strength
Power Factor, 100C, 60 Hz (ASTM D924)
>120, <160 KV
0.11%
Dielectric Constant, 100C, 60 Hz (ASTM D924)
2.56
Gassing Tendency (ASTM D2298)
9.5 ml/min.
MCS-1866
42.1 KV -
0.01%
2.74
41.2, 31.7 ml/ min
FIRE RELATED PROPERTIES# Flash Point (ASTM D92) Fire Point (ASTM D92) Auto Ignition Temp., (ASTM D2155) Oxygen Index
315F.(157C) None to b.p., (370V Ooo'cTQ 750F(399C)
18.3
310*F 0-jVc.}
None to b.p. (3?0'F froo'tf) 800F(427C)
17.1
PHYSICAL PROPERTIES#
Specific Gravity -30C -15C 0C 25C 50C 100C 150C
Coefficient of Exp., ml/ml, C
Viscosity, -40C
-30C "15 C
0 C 25C 50C
100C 150C
cs.
0205559
1.027 1.016 1.005 0.9e7 0.970 0.933 0.895
0.000750
19,620 5,119 1,040 306 69.5 24.4 6.44
2.88
-
i.oe8
1.076 1.065 1.045 1.026 0.988 0.948
"
0.000761
-
1830 426 140 37 14.7
t 4.50 2.18
*This data is based upon samples tested in the laboratory and is not o.inrAnfPPH for all samples.
WATER PCB-00034860
Pour Point (ASTM D97)
Temperature 'C at which Vapor Pressure is:
1 Torr 10 Torr 100 Torr 760 Torr
Specific Heat, @ 25F 50F 100F 150F
BTU/lb.
Thermal Conductivity BTU/ft., hr. @ 25F 50F 100F 150F
MCS-1865 -50F(-45C)
MCS-1666 -50
58 104 169 248
49 96 161 240
0.412 0.430 0.466 0.501
0.390 0.406 0.438 0.470
0.0785 0.0771 0.0744 0.0716
0.0744 0.0729 0.0702 0.0675
MATERIALS COMPATIBILITY Extensive compatibility testing has not been completed.
However, it is expected that thosei materials which are used with askarel transformer fluids will also be compatible with MCS-1865 and MCS-1866. It is recommended that compatibility tests be conducted between the fluids and samples of the specific material to be used under conditions simulative of actual use. A good procedure for such testing is ASTM 3255, Method for Investigating the Compatibility of Transformer Insulation and Construction Materials in Askarels,
JlAMBl.H)&-PRE0AUTI0WS-~*-
0205560
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WATER PCB-00034861