Electrical installation incorporating a transformer, no load tap changer and load breaking device.

摘要

Electrical installation transformation incorporating: - an electrical transformer (1) comprising primary (2) and secondary windings (3), forming a primary circuit incorporating one or more primary phases and fed by power supply conductors, and a secondary circuit incorporates one or more secondary phases - a tap changer without load (26) comprising - fixed electrical contacts (61) electrically connected to the windings, - one or more movable contacts bridging (59) that allow to carry out connections between some of said fixed contacts, - a switching element (58) or of the movable contacts (59) for moving the or the movable contacts at least between a first position establishing a first connection between the fixed contacts (61) and a second position in which establish a second connection between the fixed contacts (61), - a drive member (32), able to adopt at least a first position, a second position and a third position, intermediate the first and second positions, - a kinematic chain (54) between the operating member and the switching member, such that when the operating member moves from its first position to its second position, drives the switching member from its first position to its second position, electrical installation characterized by incorporating: - a breaking device load (15) comprising - for each feeding conductor of the primary circuit, a pole suitable to adopt a shape corresponding to the interruption of the current in the power conductor and a closed position corresponding to the passage of current driver supply open position, - an opening mechanism (22) charge accumulation, capable of passing a high energy state to a lower energy state, stable, and linked to each pole by a kinematic chain such that Arrast ra or poles its closed position to its open position, moving from its high energy state to its low energy state, the opening mechanism of a latch (82) capable of being provided to take a locking position in which it is suitable to lock the opening mechanism in its high energy state, and an unlocking position in which it allows the opening mechanism leave its high energy state, - connecting means (66) between the body switching (32) the tap changer and the latch (82) of the opening mechanism of the breaking device in load such that when the operating member (32) moves from its first position to its intermediate position, the latch (32 ) passed its unlatched position.