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When the riser pipe sections are stacked, spring-loaded sliding connectors on the conductors create a safe and reliable electrical connection.

Flanged at both ends, the riser pipe sections contain a built-in cooling system and three power conductors spaced by insulation pieces. The unique Framo riser system offers mechanical protection while eliminating electrical cables and their disadvantages. Ingress protection through overpressure.Built-in power transmission Stiff shaft operating below first critical speed, ensuring low vibration levels.No submerged penetrations or cable handling.End suction to ensure maximum NPSH (net positive suction head) availability.The Framo cable-free concept is certified for hazardous areas and means: The external circulation unit also continuously monitors the condition of the submerged pump/motor, providing information about temperature, pressure, cleanliness and seal integrity to the control system. The double sealing system further ensures that no oil is leaked to the seawater side via the conductor system. The finished pumping system is insulated, cooled and lubricated by a small external oil circulation unit, which creates an internal overpressure that prevents any ingress. The pump itself is an end-suction centrifugal pump, driven by an integrated oil-filled induction motor designed for direct on-line start (DOL) or variable-speed drive (VSD) operation. In the Framo cable-free concept, the electric submersible pump is suspended from a riser pipe containing a built-in transmission system for electrical power. The unique Framo cable-free concept eliminates the concerns associated with electric submersible pumps, such as submerged cable penetrations and the hassles of cable handling. No submerged penetrationsĪn intact hull means a higher degree of safety. The revolution that began with our unique hydraulic pumps continues with our cable-free electric submersible pumps, which lie at the heart of most oil and gas applications. Framo submersible pump technology has improved business at sea for over fifty years.