Koyoto Elect Oil N-42 Inhibited Transformer oils are severely refined hydro-cracked / hydro-treated virgin un-inhibited Naphthenic insulating oils with highest degree of purity and stability. It is manufactured from judiciously selected blend of latest technology feed stocks, which is highly suitable for all grades of Power & distribution Transformers, Circuit Breakers, Oil filled switches and X-ray equipment.
Koyoto Elect Oil N-42 Inhibited Transformer oils are severely refined hydro-cracked / hydro-treated virgin un-inhibited Naphthenic insulating oils with highest degree of purity and stability. It is manufactured from judiciously selected blend of latest technology feed stocks, which is highly suitable for all grades of Power & distribution Transformers, Circuit Breakers, Oil filled switches and X-ray equipment.
Koyoto Elect Oil N-42 Inhibited Transformer oils are highly suitable for all grades of
Specifications
Koyoto Elect Oil N-42 inhibited Transformer oils conforms to and exceed the requirements of ASTM D 3487 Type II & IEC 60296:2012.
Typical Characteristics
| TEST DESCRIPTION | TEST METHOD | SPECIFICATION LIMITS |
|---|---|---|
| Function | ||
| Kinematic Viscosity, mm2/s(Max) | ISO 3104 | |
| at 40 0C | 12.0 | |
| at -30 0C | 1800 | |
| Pour Point | ISO 3016 | < -40 |
| Woter Content, Max mg/kg | IEC 60814 | |
| a) Bulk | 30 | |
| b) Drum | 40 | |
| Break Down Voltage, Min | IEC 60156 | |
| a) As Delivered (Kv) | 30 | |
| b) After Treatment (Kv) | 70 | |
| Density kg/dm3, @20 0c, Max | ISO 3675 | 0.895 |
| DDF at 90 0c, Max | IEC 60247 | 0.005 |
| Refining/Stability | ||
| Appearance | Visuval | Clear, odourless, liquid free from suspend impurities |
| Neutralization Value / Acidity, mg KOH/g, Max | IEC 62021-1 / IEC 62021-2 | 0.01 |
| Interfacial tension, mN/m, Min | ASTM D 971 | 40 |
| Total sulphaur Content %, Max | IP 373/ ISO 14596 | No General Requirment |
| Corrosive sulphaur , Silver strip. 100°C, 18hrs | DIN 51353 | Non Corrosive |
| Cu strip & kraft Paper 150°C, 72hrs | IEC 62535 | Non Corrosive |
| DBDS, mg/kg, Max | IEC 62697-1 (in preparation) |
Not detectable(<5) |
| Anti-Oxiddant Additives | IEC 60666 | 0.08 – 0.40 |
| Metal Passivators, mg/kg, Max | IEC 60666 | Not detectable(<5) |
| 2-Furfural content. mg/kg, Max | IEC 61198 | Not detectable(<0.05) |
| Stray Gassing | CIGRE | No General Requirment |
| Perfomance | ||
| Oxidation Stability, 500 hrs, Max | IEC 61125 METHOD-C |
|
| – Total acidity. mg KOH/g, Max | 1.2 | |
| – Sludge, %, Max | 0.8 | |
| – DDF @90°C, Max | IEC 60247 | 0.5 |
| Health, safty and environment (HSE) | ||
| Flash Point °C, PMCC , Min | ISO 2719 | 135 |
| Polycyclic Aromatics % mass, Max | IP:346 | 3.00 |
| Total PCB content mg/Kg | IEC 61619 | Not Detectable(<2) |
| Corban Type Analysis, % | ||
| CN, %, Min | ASTM D2140 | 42 |
| CP, %, Min | 60 | |
| CA, %, Min | 10 | |
| Conforms to Standards | ||
| ICE 60296:2012(I) | ok | |
| ASTM D 3487 Type II | ok | |
The above figures are typical of blends with normal production tolerance and do not constitute a specification.
Note:
KOYOTO ELECT OIL N-42 INHIBITED OILS Transformer oils are High Grade Inhibited Transformer oil has superior oxidation stability – meeting the high grade requirements as specified in IEC 60296:2012, high dielectric strength and are used in equipment requiring operations at high elevated temperatures & greater
Packaging Options:
KOYOTO ELECT OIL N-42 INHIBITED OILS Inhibited Transformer oils are offered in 200-210 litres of steel drums
and also in bulk in Flexi bags or ISO tanks.
Storage Precautions:
Extreme care is taken while packing these products, including filling of drums in inert atmosphere, as Electrical Insulating oils / Transformer oils are very sensitive to very minute concentrations of contaminants, such as moisture, particulate matter, fibers, etc. Hence, care should be taken to store KOYOTO ELECT OIL N-42 INHIBITED OILS Transformer oil in a clean and dry condition. It is strongly recommended that all storage tanks/ drums be maintained such that oil is not in contact with atmospheric air. Also these oils should always be stored indoors in climate controlled environments.
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