DIALAD
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Technical Data Sheet Shell Lubricants Page 1 of 3 OCTOBER 2007 Shell Diala Oil D Dried Very high performance electrical oil Shell Diala D Dried is a non-inhibited insulating oil manufactured from specially refined naphthenic feedstock. It offers very high oxidation stability, very good dielectric properties and excellent low temperature properties and has a lower water content than required by industry norms for delivered oil quality. Shell Diala D Dried meets both the established and new copper corrosion tests. Applications Transformers Electrical insulating oil for transformers, grid and industrial transformers up to maximum load. Electrical equipment Components like rectifiers, circuit breakers, switch-gears. Advice on applications not covered in this leaflet may be obtained from your Shell Representative. Performance Features and Advantages Excellent oxidation stability Diala D Dried offers inherent natural resistance to oil degradation and is suitable for long life applications. Very good dielectric properties Meets the requirements of all major specifications. Anti corrosion properties Shell Diala D Dried is non-corrosive towards copper, with no need for passivation. Diala D Dried meets all relevant tests on copper corrosion, namely the established DIN 51353 (Silver Strip Test) and ASTM D1275, and also the newer tests: IEC CCD (WG35), now draft IEC 62535 and ASTM D1275B. Very good low temperature properties The naphthenic nature of the feedstock of Diala D Dried provides a superior low temperature performance without the use of additives. Very good heat transfer characteristics The very good fluidity of the oil ensures proper heat transfer inside the transformer, even from lowest starting temperatures. Low water content of delivered oil Diala D dried is specially handled to retain a high breakdown voltage as delivered. This enables it to be used in many applications without further treatment. Specification and Approvals Shell Diala D Dried meets the following specifications: IEC 60296 (2003) Table 2 Transformer Oil (U), uninhibited Baader oxidation test of (obsolete) DIN 57370-1 (1978) Storage precautions The critical electrical properties of Shell Diala D Dried are easily compromised by trace contamination with foreign material. Typically encountered contaminants include moisture, particles, fibres and surfactants. Therefore, it is imperative that electrical insulating oils be kept clean and dry. It is strongly recommended that storage containers be dedicated for electrical service and include air- tight seals. It is further recommended that electrical insulating oils be stored indoors in climate-controlled environments. Health and Safety Guidance on Health and Safety are available on the appropriate Material Safety Data Sheet which can be obtained from your Shell representative. Shell Diala D Dried is free of polychlorinated biphenyls (PCB).
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Shell DIALA D
Transcript of DIALAD
Technical Data Sheet
Shell Lubricants Page 1 of 3 OCTOBER 2007
Shell Diala Oil D Dried Very high performance electrical oil
Shell Diala D Dried is a non-inhibited insulating oil manufactured
from specially refined naphthenic feedstock. It offers very high
oxidation stability, very good dielectric properties and excellent
low temperature properties and has a lower water content than
required by industry norms for delivered oil quality.
Shell Diala D Dried meets both the established and new copper
corrosion tests.
Applications
Transformers Electrical insulating oil for
transformers, grid and industrial
transformers up to maximum load.
Electrical equipment Components like rectifiers, circuit
breakers, switch-gears.
Advice on applications not covered in
this leaflet may be obtained from your
Shell Representative.
Performance Features and
Advantages
Excellent oxidation stability Diala D Dried offers inherent natural
resistance to oil degradation and is
suitable for long life applications.
Very good dielectric properties Meets the requirements of all major
specifications.
Anti corrosion properties Shell Diala D Dried is non-corrosive
towards copper, with no need for
passivation. Diala D Dried meets all
relevant tests on copper corrosion,
namely the established DIN 51353
(Silver Strip Test) and ASTM D1275,
and also the newer tests: IEC CCD
(WG35), now draft IEC 62535 and ASTM
D1275B.
Very good low temperature properties The naphthenic nature of the
feedstock of Diala D Dried provides
a superior low temperature
performance without the use of
additives.
Very good heat transfer characteristics The very good fluidity of the oil
ensures proper heat transfer inside
the transformer, even from lowest
starting temperatures.
Low water content of delivered oil Diala D dried is specially handled
to retain a high breakdown voltage
as delivered. This enables it to
be used in many applications
without further treatment.
Specification and Approvals
Shell Diala D Dried meets the
following specifications:
IEC 60296 (2003)
Table 2 Transformer Oil (U),
uninhibited
Baader oxidation test of (obsolete)
DIN 57370-1 (1978)
Storage precautions The critical electrical properties of
Shell Diala D Dried are easily
compromised by trace contamination
with foreign material. Typically
encountered contaminants include
moisture, particles, fibres and
surfactants. Therefore, it is
imperative that electrical insulating
oils be kept clean and dry.
It is strongly recommended that
storage containers be dedicated for
electrical service and include air-
tight seals. It is further
recommended that electrical
insulating oils be stored indoors in
climate-controlled environments.
Health and Safety Guidance on Health and Safety are
available on the appropriate Material
Safety Data Sheet which can be
obtained from your Shell
representative.
Shell Diala D Dried is free of
polychlorinated biphenyls (PCB).
Technical Data Sheet
Shell Lubricants Page 2 of 3 OCTOBER 2007
Protect the environment Take used oil to an authorized
collection point.
Do not discharge into drains, soil or
water.
Typical Characteristics
Specification
requirements Diala D Dried
Property Units Method IEC 60296
Appearance IEC 60296 Clear, free of
solids
Complies
Density at 15ºC kg/m3 ISO 3675 - 884
Density at 20ºC kg/m3 ISO 3675 <895 881
Kinematic viscosity
at 40ºC
mm2/s ISO 3104 12 max 8,1
Kinematic viscosity
at 20ºC
mm2/s ISO 3104 25 max 17,3
Kinematic viscosity
at -30ºC
mm2/s ISO 3104 1800 max 730
Flashpoint P.M. ºC ISO 2719 135 min 138
Pourpoint ºC ISO 3016 < -40 -60
Neutralisation value mg KOH/g IEC 62021-1 0.01 max < 0.01
Corrosive Sulphur Draft IEC 62535 Non-corrosive
Corrosive Sulphur ASTM D 1275 B Non-corrosive
Corrosive Sulphur DIN 51353 Non-corrosive Non-corrosive
Breakdown voltage
Untreated
After treatment
kV IEC 60156
min 30
min 70
>30
>70
Water content
(ex works)
ppm IEC 60814 40 max (drums and
IBC)
30 max (bulk)
<40 drums/IBC
<30 bulk
Dielectric
dissipation factor
(DDF) at 90ºC
IEC 60247 0.005 max 0.001
Oxidation Stability
(164h/120ºC)
IEC 61125 C
Total acidity mg KOH/g 1,2 max 0.23
Sludge %m 0,8 max 0,1
DDF at 90 ºC 0.5 max 0,15
Oxidation Stability
Baader (140h/110ºC)
DIN 51554
Neutralisation value mg KOH/g - 0.09
Sludge content % m - 0.02
Dielectric
dissipation factor
(DDF) at 90ºC
- 0.11
Technical Data Sheet
Shell Lubricants Page 3 of 3 OCTOBER 2007
These characteristics are typical of current production.
Whilst future production will conform to Shell's specification, variations in these
characteristics may occur.
