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GuroFlex Data Sheet
Potting Compound Installation Guide
Potting compound provides the maximum protection for cable terminations from environmental effects.
Recommended For:
Applications above 8 kV, where couplers will have a long service life, or where couplers will be exposed to extreme changes in temperture and humidity.
It is available as an option and can be purchased separately.
Potting Compound
BENEFITS
•Patton & Cooke approved potting compound, used to fill the back body of a coupler
•Air is displaced at the base of the insulators and minimizes partial discharge
•Eliminates condensation in couplers exposed to extreme heat and humidity or in areas where the day and night ambient temperatures vary widely — condensation forms on interior of couplers
Potting Compound
5/8kV Couplers: One (1) OS-J990-MV3 (3 litre) kit is required for each cable mounted coupler
5/8kV Junction Boxes: One (1) OS-J990-MV3 (3 litre) kit and one (1) OS-J990-MV (5 litre) kit are required
15kV Couplers: One (1) OS-J990-MV5 (5 litre) kit is required for each cable mounted coupler
25kV Couplers (C250F Series): Two (2) OS-J990-MV5 (5 litre) kits are required for each cable mounted coupler
Potting Compound
Patton & Cooke Co. recommends the use of an approved “potting compound” to fill the back body of the coupler. By filling the rear body of the coupler with a re-enterable potting compound, the air at the base of the insulators is displaced by compound, so partial discharge is minimized, if not eliminated entirely. At the very minimum we recommend that each of the phase insulator tubes be filled with compound.
For applications in areas of extreme heat and humidity or in areas where the day to night ambient temperatures vary widely, it is common to have condensation form on the interior of the couplers. The only way to eliminate this condensation problem is to fill the back body with potting compound.
Patton & Cooke 5 and 8 kV couplers require one (1) 5/8kv (1,110 gram) kit to fill. 15kV couplers require one (1) 15 kv (3,330 gram) kit to fill. They do not fill the coupler completely, but about 70% or 80%. It is important that the backs of the insulators are filled and do not have any air pockets. The best way to do this is by having the coupler pointing downward (see illustration below)
