On order
Diala S4 ZX-I
Premium inhibited electrical insulating oil, virtually sulphur-free, for power transformers
Indeplineste GB 2536-2025
Specifications
- Brand
- Shell
- Category
- Transformer & dielectric oils
- Manufacturer code
- 001E8702
- Availability
- On order
Manufacturer's description
Premium Inhibited, Biodegradable Electrical Insulating Oil. Shell Diala S4 ZX-I is a biodegradable electrical insulating oil from Shell designed to meet the challenges presented by the latest power transformers. It offers an extended oil life with the peace of mind of zero sulphur content. Shell Diala S4 ZX-I is manufactured from virtually sulphur-free base oils produced using Shell’s GTL (gas-to-liquid) technology. These base oils offer a high degree of compositional consistency and have an excellent response to anti-oxidants. In addition, they are globally available and free from PCBs, DBDS and passivators. Shell Diala S4 ZX-I meets both the established and new industry copper corrosion tests.
Performance & benefits
- Extended oil lifeShell Diala S4 ZX-I is a fully inhibited oil giving outstanding oxidation performance and an extended oil life. Shell Diala S4 ZX-I is also suitable for use in highly loaded applications.
- Transformer protectionShell Diala S4 ZX-I is manufactured from a zero sulphur* base oil, making it intrinsically non-corrosive towards copper, without the need for passivation or other additives. Shell Diala S4 ZX-I meets all relevant tests for copper corrosion, namely the established DIN 51353 (Silver Strip Test), ASTM D1275, and also the latest more severe tests: IEC 62535 and ASTM D1275. *Sulphur content below 1ppm detection limit of ASTM D5185
- System EfficiencyThe good low temperature viscometric properties of the oil ensure proper heat transfer inside the transformer, even from very low starting temperatures. Shell Diala S4 ZX-I (OEM Bulk) is handled carefully to achieve a low water content and retain a good breakdown voltage at point of delivery. The need for further drying and treatment should be evaluated per application and OEM specification.
- Biodegradable according to OECD 301BShell Diala S4 ZX-I exceeds 60% biodegradation OECD 301B test after 28 days.
- 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 & low sulphur content”)
Standards & approvals
Approved for
Typical characteristics
| Property | Typical value | minimum | Method |
|---|---|---|---|
| Appearance | Clear, free from sediment and matter | Clear, free from sediment and matters suspended | IEC 60296 suspended |
| Density @20°Ckg/m3 | 805 | ISO 3675 | |
| Kinematic viscosity @40°Cmm2/s | 9.8 | ISO 3104 | |
| Kinematic viscosity @-30°Cmm2/s | 438 | ISO 3104 | |
| Flash point (PMCC)°C | 191 | 135 | ISO 2719 |
| Pour point°C | -45 | ISO 3016 | |
| Neutralisation value mg KOH/g | 0.01 | IEC 62021-1 | |
| Interfacial Tension mN/m | 51 | 43 | IEC 62961 |
| Colour | L0.5 | ISO 2049 | |
| Total Sulphur content m% | < 0.001 | ISO 14596 | |
| Corrosive sulphur - Silver | Not corrosive | DIN 51353 | |
| Potentially Corrosive | Not corrosive | IEC 62535 | |
| Corrosive sulphur | Not corrosive | ASTM D1275 | |
| Breakdown voltage kV | 40 - 60 | 30 | IEC 60156 |
| Breakdown voltage after kV | 78 | 70 | IEC 60156 |
| Dielectric Dissipation Factor DDF | 0.001 | IEC 60247 | |
| Oxidation stability 500h / | High grade oil, | IEC 61125 | |
| 500h@120°C 120°C | Type A | ||
| Total acidity (after Oxidation) mg KOH/g | 0.02 | IEC 62021-1 | |
| Sludge (after Oxidation)%m | 0.01 | IEC 61125 | |
| Dielectric Dissipation Factor DDF DDF | 0.001 | IEC 60247 | |
| Water content (Bulk) mg/kg | 17 | IEC 60814 | |
| 2 Furfural and related mg/kg | Not detectable | IEC 61198 | |
| compounds content | mg/kg) for each individual compound | (<0.05 | |
| DBDS content mg/kg | Not detectable (<5 mg/kg) | IEC 62697-1 | |
| Metal passivator additives mg/kg | Not detectable (<5 mg/kg) | IEC 60666 | |
| Oxidation inhibitor content%m | 0.2 | 0.08 | IEC 60666 |
| PCA content%m | <3 | IP 346 | |
| PCB content mg/kg | Not detectable (<2 mg/kg) | IEC 61619 |
Complete documentation
We email you the sheets listed below in a single archive. No account, no order required.
- TDS
- SDS
- SDS