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Description
Super Insulated Transformer Oil - 55 Gallon DrumDescription Sinopec Super Insulated Transformer Oil is blended with highly refined mineral oil and a selected antioxidant. It is designed for insulating and cooling transformers, oil immersed switch gear and other electrical insulating applications. There are three kinds of transformer oil, I 10 super insulated transformer oil, I 20 super insulated transformer oil and I 40 super insulated transformer oil, which meet the requirements of IEC60296: 2012.
Description
Sinopec Super Insulated Transformer Oil is blended with highly refined mineral oil and a selected antioxidant. It is designed for insulating and cooling transformers, oil-immersed switch-gear and other electrical insulating applications. There are three kinds of transformer oil, I-10℃ super insulated transformer oil, I-20℃ super insulated transformer oil and I-40℃ super insulated transformer oil, which meet the requirements of IEC60296:2012. Sinopec transformer oil IEC don’t contain polychlorinated biphenyls (PCBs).
Features & Benefits
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Excellent dielectric (insulating) properties, effectively prevent discharge in an electric field.
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Low viscosity and low density lead to the oils having good cooling properties and good heat transfer characteristics at room temperature and below, and so ensure effective cooling of transformer core and coils.
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Even at very low temperatures the oil viscosity remains low, and therefore allows the transformer to be started up under very cold conditions without problem.
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Excellent oxidation stability characteristics are provided by the stable base oil together with the high performance oxidation inhibitor system, and prevent the formation of acidic material and sludge in service, extending the life of the oil.
Sinopec Super Insulated transformer oil meets the requirements of IEC60296: 2012.
- For the special application requirements (high oxidative stability and low sulfur content) of transformer oil ，the oil comply with IEC 60296:2012, including clause 7.1 requirements.
Applications
Sinopec Super Insulated Transformer Oil is suitable for use in:
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Oil-filled transformers, where it acts as a non-conducting insulating and cooling medium.
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Oil-immersed switch-gear.
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Other electrical insulating applications.
Specifications
| Grade | SPECIFICATION LIMITS of IEC60296:2012 | I-10℃ | I-20℃ | I-40℃ |
|---|---|---|---|---|
| Kinematic viscosity, mm²/s | ||||
| cSt @ 40℃, ISO 3104 | ≤12 | 9.66 | 10.85 | 9.68 |
| cSt @ -10℃, ISO 3104 | ≤1800 | 106.54 | – | – |
| cSt @ -20℃, ISO 3104 | ≤1800 | – | 283 | – |
| cSt @ -40℃, IEC 61868 | ≤2500 | – | – | 2091 |
| Pour point, ℃, ISO 3016 | * | -42 | -45 | -57 |
| Water Content, mg/kg, IEC60814 | < 30 | 29 | 14 | 13 |
| Dielectric Breakdown (as received), kV, IEC 60156 | 30 | 54 | 75 | 87 |
| Dielectric dissipation factor @ 90℃, IEC 60247 | 0.005 | 0.0006 | 0.0001 | 0.0002 |
| Density @ 20℃, g/mL, ISO 3675 | 0.895 | 0.836 | 0.847 | 0.840 |
| Particle Content, IEC60970 | No requirement | ISO Code: 15/13/11 | ISO Code: 13/12/10 | ISO Code: 15/14/11 |
| Appearance, IEC 60296 | Clear & bright | Clear & bright | Clear & bright | Clear & bright |
| Acidity, mg KOH/g, IEC 62021 | ≤0.01 | 0.009 | <0.01 | <0.01 |
| Interfacial tension, mN/m, ISO6295 | 40 | 47.98 | 52 | 48 |
| Total Sulfur content %, ISO 14596** | No requirement | 0.0031 | 0.00482 | 0.006 |
| Corrosive sulfur, DIN51353 | Non-corrosive | Non-corrosive | Non-corrosive | Non-corrosive |
| Potentially corrosive sulfur, IEC 62535 | Non-corrosive | Non-corrosive | Non-corrosive | Non-corrosive |
| DBDS, mg/kg, IEC 62697 | <5 | <1 | <1 | <1 |
| Inhibitors %, IEC 60666 | (0.08–0.40%) | 0.33 | 0.32 | 0.34 |
| Metal passivator additives, mg/kg, IEC 60666 | <5 | BTA: <1 Irgamet 39: <5 |
BTA: <1 Irgamet 39: 2 |
BTA: <1 Irgamet 39: <5 |
| 2-Furfural & related compounds, mg/kg, IEC 61198 | <0.05 | <0.05 | <0.05 | <0.05 |
| Oxidation stability, 500 h @ 120℃, IEC 61125C*** | ||||
| — total acidity, mg KOH/g | ≤1.2 | 0.039 | 0.19 | 0.24 |
| — sludge, wt% | ≤0.8 | 0.0318 | <0.01 | <0.01 |
| — DDF at 90℃ | ≤0.500 | 0.0021 | 0.0088 | 0.0110 |
| Flash point (PMCC), ℃, ISO 2719 | 135 | 168 | 138 | 166 |
| PCA Content %, IP 346 | ≤3 | 0.15 | 0.92 | 0.70 |
| PCB Content, mg/kg, IEC 61619 | <2 | <2 | <2 | <2 |
Industry and OEM specifications
|
Sinopec Transformer Oil meets the performance requirements of the following industry specifications: |
|
IEC |
60296:2012 |
|
Sinopec Transformer Oil holds the following formal OEM approvals: |
|
ABB |
Specification 1ZBA117001-1: HI-B (Sinopec 25 Transformer Oil*) HI-A (Sinopec 45 Transformer Oil*) |
|
Siemens |
TUN 901 293 (2007) (Sinopec 25 and 45 Transformer Oil*) |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Stable, flexible in deployment configuration, creates true privacy and looks great.
Size: 3 Panel 12FT W
This is the second room divider panel I have installed, and there are several features about this one that I like much better than my older one.
The fact that there are no gaps and that the material is thicker means you get more privacy or more hiding power, if you wish. My older divider has vertical spaces between each of the panels and the panels are half as wide as the Siebwin panels, so there are many vertical spaces. The Siebwin divider really creates privacy.
Another feature that I really appreciate is that the legs are wider and stand off from the floor. On my older one the legs are flat and they're rather awkward to adjust because they create more drag on the floor. The feet on the older one also loosen if you turn them counter clockwise, so adjustments of configuration that require the feet to be moved are more complex.
The older divider also must be deployed in a zig-zag fashion because he feet are not as wide, but this new one can be deployed and stable in a straight, an "N" shape or an arc. They are both the same length, but because the older one must be use in a zig-zag deployment it doesn't reach to the length of the new one.
The Siebwin divider definitely costs more at $103.48, but it sports several features and advantages over the other brand, so it does a better job and is worth the extra cost.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Easy to assemble, does the job, material is shiny nylon and shows creases, minor defects, sloppy
Size: 3 Panel 12FT W, Size: 3 Panel 12FT W
The Siebwin room divider is a good idea, and for the price, it mostly delivers on the intended functionality. I ordered the 12 foot, 3-panel version mainly to hide an unfinished basement storage area that had become an eyesore. It works well for that purpose and gives the space a cleaner appearance without spending the kind of money that more decorative dividers or custom partitions cost. If you need something temporary, portable, or mainly functional, this is a viable option.
There are a few limitations that became obvious during setup and use. The first thing I noticed was that the weld quality on some of the metal poles is fairly sloppy. Once the cover is installed, you do not really see it, but up close, it does not look especially refined or professional. The blackout material also is not a matte canvas style fabric as I expected. It has more of a shiny nylon appearance, and the creases are fairly visible. Being that it’s more of a nylon, I’d be hesitant to try steaming it to remove the creases. However, the creases do not matter if you are using it in a basement, dorm, or shared room, but for photography, video work, or a professional office setting, the appearance could be disappointing. The fabric is thick enough, though. It blocks visibility well enough, but strong light behind it still shows through to some extent, nothing deal-breaking. Also, my fabric appeared to be slightly defective. The hook and loop strip on one of the bottom sections was off-center and couldn't be totally attached because it was lined up with one of the legs. I originally hoped to use this as a video backdrop, but I will probably end up replacing the fabric with a proper green screen or canvas material while continuing to use the frame itself. For now, it does a good job of covering my basement junk.
Assembly was actually easier than I expected and took roughly 15 to 20 minutes. The longer vertical poles are tethered together similarly to tent poles, which made setup straightforward and fairly intuitive. The shorter horizontal pieces slide and snap together to the top and bottom of the vertical assembly. After each section is assembled, the divider panels connect together with metal plates and two knurled screws (at the top and bottom), so no tools are really required. A few screws were difficult to start because paint had gotten into the threads, but once they caught, they tightened down normally. The feet install with similar knurled fasteners and help keep the divider reasonably stable. One thing to watch for during setup is the fabric orientation. There is one arrow indicator in the middle of the fabric to indicate up. However, if you need another indicator, the smaller hook and loop strip goes on the bottom while the longer strip goes on top. I realized mine was upside down right before finishing and had to redo it. I wasn't difficult to redo, despite the defect in mine.
The overall design is practical and easy to move around. I do like that the panels can fold and bend into different shapes depending on the space. The widened feet help stability, although when trying to stretch the fabric tight, I noticed the poles sometimes wanted to overlap slightly at the joints. Tightening everything helped somewhat, but it still happened occasionally. The divider feels adequate for normal indoor use, though I would not expect premium durability or luxury-level fit and finish at this price point. The entire device can also be easily disabled and stored in a tote if you need it completely out of the way. It comes with assembly instructions, but even if you didn’t have them, it’s easy to build without them (save a mistake or two).
In terms of value, I think the Siebwin divider mostly matches its price. Around $100 gets you a large freestanding partition with decent usability and easy assembly, but there are compromises in materials, appearance, and refinement. The defects are also off-putting, but hopefully you won't have them. Higher-end room dividers can easily cost two or three times more, so some of the tradeoffs are expected. I also noticed cheaper alternatives online, but based on the quality here, I suspect those would probably have even more issues. For practical home use, temporary privacy, hiding storage areas, or separating shared spaces, this is a good option as long as expectations stay realistic.
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Reviewed in the United States on May 18, 2026
★★★★★ 3
Works well but takes up more space than expected
Size: 2 Panel 8FT W, Size: 2 Panel 8FT W
This room divider does the job for creating a little extra privacy and was easy enough to set up. The panels feel decent quality and the wider feet help keep it more stable than some cheaper screens I’ve tried. My only issue is that it takes up a bit more room than I expected, especially with the feet sticking out. It’s still portable and folds away nicely, but definitely measure your space first. Overall it works well for separating a room or blocking off an area temporarily. i wish it came in other colors
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Nice divider, serves it's purpose well!
Size: 3 Panel 12FT W
This room divider worked out very well for what I needed. I wanted a simple way to create a little more privacy and separation in a larger room without doing anything permanent, and this divider was an easy solution. The panels provide good coverage, and the black color gives it a clean, modern appearance that blends in nicely with different décor styles.
Assembly was fairly straightforward, and once set up, the wider feet helped keep the divider stable on the floor. I was especially happy with how flexible the panels are to arrange. You can keep it mostly straight, angle it around furniture, or create a more enclosed private space depending on the layout you need.
The material allows light to filter through slightly while still offering a noticeable sense of privacy. I’ve used it for separating a workspace area, but it would also work well in bedrooms, apartments, dorms, studios, or shared living spaces. Another plus is that it can be folded and moved without too much effort when you want to change the setup.
Overall, this divider delivers a good balance of functionality, portability, and appearance. It’s a practical option for anyone needing temporary room separation without installing permanent walls or curtains.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Perfect for Adding Privacy to a Piano Studio
Size: 2 Panel 8FT W, Size: 2 Panel 8FT W
I Ordered the 2 Panel version which is way too big for my needs... that's on me. So keep in mind that the picture shows a fabric made for two panels only being used on one and hence it is not pulled tight; it would pull tight and not be so wrinkly if it was set up properly as two panels. The metal pools that make up the panels seem to be well made, stable, and of good quality. They were very easy to put together and they stand up tall with plenty of height. The appearance of it with the fabric on it isn't as elegant as it could be, but it still looks good enough. The material is plenty solid, not allowing light through it, and thereby making a solid barrier. I am using it to block the view out the studio door when a student is sitting at the piano to avoid distractions from the hallway. It will allow a student to enter the studio with our distracting the student who is at the piano.
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Reviewed in the United States on May 18, 2026