Superdri^® Cartridges

• Remove dissolved water from transformer oil
• Reduce moisture in transformer oil to <10 ppm without heat and vacuum

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DESCRIPTION

Dissolved water removal from insulating oil is now possible without the need for heat and vacuum oil processing systems. Specifically developed for dehydrating oil to be used in transformers, patented* Superdri® cartridges can help utilities reduce expenses and increase efficiency when processing oil.

FEATURES

• Unique Construction – Specifically designed for transformer oil dehydration.
• High Capacity – Process up to 5,000 gallons of oil or more with a single cartridge.
• Efficient – Single pass water removal to less than 10 ppm total water, or better.
• Versatile – Models available to fit most industry standard housings.
• Safe – Will not remove oxidation inhibitors.
• Cost Effective – Process transformer oil for less than 5¢ per gallon.

SPECIAL CONSIDERATIONS

Superdri^® cartridges are not designed for particulate removal. Prefiltering through Velcon 1/2 micron elements is recommended if particle contamination is suspected. Superdri^® cartridges are not recommended for cost effective removal of free water in insulating oil. If free water is suspected, the oil should be prefiltered using Velcon Aquacon^® elements.

APPLICATIONS

Superdri^® cartridges are designed for oil processingsituations where dissolved water in insulating oil is a concern, and its removal is desirable. Examples of these situations follow:

• New distribution and EHV transformers are typically oilfilled under vacuum. If the insulating oil has a high total water content, it is also processed through a heat and vacuum system. Superdri® cartridges can be used instead of heat and vacuum to dry the oil.
• Repaired transformers are often oil filled under vacuum. Flowing the oil through Superdri® cartridges eliminates the need to vacuum process the oil.
• Insulating oil in storage tanks, and tankers of oil that have accumulated a high level of dissolved water can be recirculated and dried to less than 10 ppm total water using Superdri® cartridges.
• Use Superdri^®cartridges for processing oil in other high voltage apparatus that is sensitive to dissolved water.
• Use Superdri^®cartridges to help meet processing specifications where dissolved water sensitive dielectric breakdown voltage test ASTM D-1816 is used, or required.

SuperDri® cartridges are easy to use:

1. Using Chart (A) above, determine amount of water in oil.
2. Using Chart (B) above, determine amount of water a single cartridge will remove.
3. Divide results from (1) by results from (2):
   
   2000 ml to be removed
   ——————————————— = 3.2 cartridges required
   620 ml capacity

Unlike ordinary filters, Superdri^®cartridges cannot be monitored for capacity or performance by differential pressure. Regular effluent samples must be taken and analyzed with a Karl Fischer titrator, such as the Aquapal®, to monitor the cartridges’ effectiveness. In-line moisture sensors such as Doble Domino can also be used to monitor cartridge performance. Without availability of this equipment, the user can estimate cartridge life from the above charts.

SuperDri® cartridges will not remove dissolved gases,
nor are they recommended for use on badly deteriorated or arced oil.

ORDERING INFORMATION

NOTE: Install Superdri^®cartridges vertically.

Aquapal is a registered Trademark of CSC Scientific Company, Inc.