Hi friends. I want to know that how much water(ppm)in the naphthenic light base oil? Maximumum value is needed.
Thanks a lot
Pelin
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That depends - are you using it as an electrical insulating oil? In that case, most manufacturers specify a maximum around 30 ppm.
For lube blending, the maximum allowable amount of water in any base oil is determined by your process - how much can you tolerate before the end product is hazy? You'll only find this out experimentally, by making bench blends to see what level of water causes you a problem, which then sets your spec. Then you find a supplier with product that is lower than that level.
For lube blending, the maximum allowable amount of water in any base oil is determined by your process - how much can you tolerate before the end product is hazy? You'll only find this out experimentally, by making bench blends to see what level of water causes you a problem, which then sets your spec. Then you find a supplier with product that is lower than that level.
As per my knowledge 35 ppm used in naphthenic light base oil.
Because of their superior solvency, a naphthenic will hold a more water without exhibiting a haze than a paraffinic.
35 ppm is the industry spec for transformer oils. They need to be very dry for obvious reasons. Due to the very critical spec, test precision-related variation between labs and the fact that water just seems to find its way into the most well-protected trailers, most reliable suppliers won't release naphthenic oil intended for transformer service if the water content measures over 30 ppm.
35 ppm is the industry spec for transformer oils. They need to be very dry for obvious reasons. Due to the very critical spec, test precision-related variation between labs and the fact that water just seems to find its way into the most well-protected trailers, most reliable suppliers won't release naphthenic oil intended for transformer service if the water content measures over 30 ppm.
What are the oil cleanliness specs for in service transformer oil in the US and Canada?
Thanks,
Thanks,
Cleanliness specs as in particle count? I don't think there are any. Particle count could be deceptive, as not all particles would be similarly conductive. As long as the oil passes D877 (Dielectric Strength) and D924 (Dielectric Constant/Power Factor), particulate levels seem sort of irrelevant. If the oil insulates, that's really all that matters. The contaminants of concern are water, corrosive sulfur and acidic components - all things that decrease insulating value.
Since these oils are typically in non-circulating applications (except maybe for very large substation Type I applications) any particles are going to wind up at the bottom of the can after a little while.
Since these oils are typically in non-circulating applications (except maybe for very large substation Type I applications) any particles are going to wind up at the bottom of the can after a little while.