FIELD: construction.
SUBSTANCE: system of the underwater direct electric heating intended for heating of the under water steel pipe (1) transporting hydrocarbons. The system contains a cable (3) of the direct electric heating extending along the steel pipe (1) to which it is attached, and a power supply (7) cable receiving electric power from the power source (5) located on shore or on the surface of the floating structure, which energizes the cable (3) of the direct electric heating. The system of the underwater direct electric heating contains a power adjustment unit (100) located underwater between the power supply cable (7) and the cable (3) of the direct electric heating. The power supply cable (7) extends from the power source (5) located on the shore or underwater and comes down to the power adjustment unit (100).
EFFECT: invention provides heating of longer and larger pipes in the intermittent or continuous mode.
16 cl, 19 dwg
