Disconnectors. Disconnectors shall be for external mounting, of the pantograph, semi-pantograph type, two columns with central opening, or three columns with lateral opening (with rotating central column), and the command system shall be motorized, with local and remote control. The disconnectors can open and close circuits with live residual currents. The switches of the main and earthing disconnector shall have a mechanism to prevent the closure of one switch when the other is in the closed position. All earthing disconnectors and switches shall have an electrical lock that will have to be released to carry out the manual opening or closing operation. In the case of line disconnectors, they shall be provided with a local command lock, both manual and electrical. An automatic mechanical interlock shall be provided to prevent any sudden movement of the disconnector in its completely opened or closed positions.
Disconnectors. The disconnectors will be for external mounting, of the pantograph type, semi-pantograph, or conventional, with three columns of lateral opening (with rotating central column), motorized, with local and remote control. The disconnectors may open and close circuits with residual currents under voltage. The main disconnector and grounding blades shall have a mechanism that prevents the closing of one blade when the other blade is in the closed position. For all disconnectors and grounding blades there will be an electrical block that will need to be released to perform the manual opening or closing operation. For line disconnectors, a local lock, both manual and electrical, will be available. An automatic mechanical interlock shall be provided to prevent any unintended disconnector movement in its extreme opening or closing positions.
