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Shell Diala S2 ZU-I Dried GT
Uninhibited, dried electrical insulating oil for transformers
Specifications
- Brand
- Shell
- Category
- Transformer & dielectric oils
- Manufacturer code
- 001I1038
- Availability
- On order
Typical characteristics
| Property | Typical value | Limit | Method |
|---|---|---|---|
| Appearance | Indeplineste | Limpede, fără sedimente și materii în suspensie | IEC 60296 |
| Density @20°Ckg/m3 | 816 | max 895 | ISO 3675 |
| Kinematic viscosity @100°Cmm2/s | 2.2 | ISO 3104 | |
| Kinematic viscosity @40°Cmm2/s | 7.4 | max 12 | ISO 3104 |
| Kinematic viscosity @-20°Cmm2/s | 115 | ISO 3104 | |
| Kinematic viscosity @-30°Cmm2/s | 253 | max 1 800 | ISO 3104 |
| Kinematic viscosity @-40°Cmm2/s | 1 000 | ISO 3104 | |
| Flash point°C | 161 | min 135 | ISO 2719 |
| Pour point°C | -51 | max -40 | ISO 3016 |
| Fire point°C | 186 | ISO 2592 | |
| Neutralisation valuemg KOH/g | 0.01 | max 0.01 | IEC 62021-1 |
| Corrosive sulphur | Nu este coroziv | DIN 51353 | |
| Sulphur potential coroziv | Nu este coroziv | IEC 62535 | |
| Total sulphur contentmg/kg | 1 | Section 7.1 limit 500 | ASTM D5185 |
| Breakdown voltage, netratatkV | 40 | min 30 | IEC 60156 |
| Breakdown voltage dupa tratamentkV | 70 | IEC 60156 | |
| Factor de disipare Dielectric DDF @90°C | 0.002 | max 0.005 | IEC 61125 C |
| Oxidation stability 500 h / 120°C | Ulei de calitate superioara tip A | IEC 61125 C | |
| Total aciditymg KOH/g | 0.02 | max 0.3 | IEC 61125 C |
| Residue%m | 0.02 | max 0.05 | IEC 61125 C |
| Factor de disipare Dielectric @90°C DDF | 0.02 | max 0.05 | IEC 61125 C |
| content de apa (butoaie/IBC)mg/kg | 14 | max 40 | IEC 60296 |
| content de apa (bulk)mg/kg | 14 | max 30 | IEC 60296 |
| content de 2-furfural si compusi inruditimg/kg | Indeplineste | IEC 61198 | |
| Aditivi pentru pasivatori metalicimg/kg | Indeplineste | Nedetectabil | IEC 60666 |
| content de inhibitor de Oxidation (DBPC)%m | 0.23 | IEC 60666 |
Complete documentation
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Manufacturer's description
Premium inhibited, readily biodegradable electrical insulating oil with excellent low-temperature performance. Shell Diala S5 BD is Shell's new readily biodegradable electrical insulating oil, developed to meet the challenges of today's distribution transformers and tomorrow's power transformers. It delivers excellent low-temperature performance and an extended oil life. Shell Diala S5 BD is manufactured from zero-sulphur base oils using Shell's GTL (gas-to-liquid) technology. These base oils offer a high degree of compositional consistency and have an excellent antioxidant response. In addition, they are free from PCBs, DBDS and passivators.
Applications
- Specifications, approvals and recommendations: IEC 60296 (Edition 5, year 2020); Type A, fully inhibited high-grade oils
- IEC 60296 Ed4 (2012): Table 2 Transformer Oil (I) (Inhibited oil) Section 7.1 ("Higher oxidation stability and low sulphur content")
- *Sulphur content below the 1 ppm detection limit of ASTM D5185.
- Advice on applications not covered here can be obtained from Shell distributor or Shell Lubricants representatives or from the technical helpdesks. Meets the performance requirements set out in the Canadian specification CAN/CSA-C50-14 Table 1 Class A Type II (inhibited)
- For the full list of equipment approvals and recommendations, please consult your local Shell technical helpdesk.
- IEC 60296 (Edition 5, year 2020); Type A, fully inhibited high-grade oils
- Meets the performance requirements set out in the Canadian specification CAN/CSA-C50-14 Table 1 Class A Type II (inhibited)
Performance & benefits
- Readily biodegradable according to OECD 301B: specially designed for use in power and distribution transformers wherever environmental concerns are a top priority.
- Extended oil life: a fully inhibited oil offering remarkable oxidation performance and an extended oil life; especially suitable for highly loaded applications.
- Transformer protection: manufactured from zero-sulphur base oils, making it intrinsically non-corrosive towards copper without the need for passivation.
- Meets all relevant copper-corrosion tests, including DIN 51353 and IEC 62535.
- Low water content: specially dried and handled to achieve a low water content and maintain a high breakdown voltage, allowing use in many applications without further treatment.
Standards & approvals
OECD 301B
OECD 301B biodegradability above 60 %
A test result rather than a norm: OECD 301B measures the carbon dioxide evolved over 28 days. Above 60 % counts as "readily biodegradable", the threshold the environmental labels require.