HIGH GRADE
Nytro Gemini X
High performance insulating oil
An inhibited high-grade oil, Nytro Gemini X conforms to IEC 60296 Edition 4.0 – including the fulfilment
of specific requirements for special applications. Developed and formulated to deliver strong resistance
to oil degradation, Nytro Gemini X provides excellent oxidation stability for a longer transformer life with
less maintenance.
Designed for heavy duty Product description
This product has been specially developed for use in Nytro Gemini X fulfils the requirements for IEC 60296
oil-filled electrical equipment – including power and Edition 4.0 fully inhibited oil. Nynas classify this product
distribution transformers, rectifiers, circuit breakers and as a high grade.
switchgears.
Nytro Gemini X is rigorously analysed and passes the
following corrosion tests:
Performance and benefits - ASTM D1275 method B
- IEC 62535
Very good heat transfer. Thanks to low viscosity and - DIN 51353
viscosity index, this high grade offers extremely good
heat transfer characteristics, ensuring heat is efficiently In accordance with IEC 60296 Edition 4.0, all additives
removed from core and windings. are declared.
Excellent oxidation stability. Developed and formulated
to deliver superb resistance to oil degradation, this There’s more to us than this
grade provides excellent oxidation stability for We’re delighted you chose one of our transformer oils.
enhanced transformer life and minimum maintenance. If you have any questions about other products and
services, get in touch with your local Nynas contact.
Very good low temperature properties. Naphthenic Besides top quality oils, we offer a wide range of
characteristics allow the transformer to start at the services, including rapid delivery worldwide, sample
lowest possible temperature – without using pour point analysis, training, seminars and much more. All you
depressants. have to do is ask. Find out more at www.nynas.com
High dielectric strength. This insulating oil both meets
and exceeds the toughest demands on dielectric
strength – when stored and handled correctly.
PRODUCT DATA SHEET
Nytro Gemini X
PROPERTY UNIT TEST METHOD SPECIFICATION LIMITS TYPICAL DATA
MIN MAX
1 - Function
2
Viscosity, 40°C mm /s ISO 3104 12.0 9.0
2
Viscosity, -30°C mm /s ISO 3104 1800 800
Pour point °C ISO 3016 -40 -51
Water content mg/kg IEC 60814 30 <20
Breakdown voltage
- Before treatment kV IEC 60156 30 40-60
- After treatment kV 70 >70
3
Density, 20°C kg/dm ISO 12185 0.895 0.870
DDF at 90°C IEC 60247 0.005 <0.001
2 - Refining/stability
Appearance IEC 60296 Clear, free from sediment complies
Acidity mg KOH/g IEC 62021 0.01 <0.01
Interfacial tension mN/m EN 14210 40 50
Total sulphur content % ISO 14596 0.15 0.01
Corrosive sulphur DIN 51353 non-corrosive non-corrosive
Potentially corrosive sulphur IEC 62535 non-corrosive non-corrosive
Corrosive sulphur ASTM D 1275 B non-corrosive non-corrosive
DBDS mg/kg IEC 62697-1 not detectable not detectable
Antioxidant wt % IEC 60666 0.4 0.38
Metal passivator additives mg/kg IEC 60666 not detectable not detectable
2-Furfural and related compounds
mg/kg IEC 61198 0.05 <0.05
content
Aromatic content % IEC 60590 3
3 - Performance
Oxidation stability at 120°C,500 h IEC 61125 C
Total acidity mg KOH/g 0.3 0.06
Sludge wt % 0.05 <0.02
DDF at 90°C 0.050 0.01
4 - Health, safety and environment (HSE)
Flash point, PM °C ISO 2719 135 152
PCA wt % IP 346 3 <3
PCB IEC 61619 not detectable not detectable
Nytro Gemini X is an inhibited insulating oil with extremely good electrical and excellent Severely Hydrotreated Insulating Oil
ageing properties meeting IEC 60296 Ed.4 (2012), special applications. Issuing date: 2012-04-01
