Introduction of high current terminal installation method

High-current terminals in the installation of the correct construction methods

10 kV line zero sequence protection device with a large external terminal with zero current> high current terminals, the design and construction should pay attention to:

(1) should ensure that the selection of zero-sequence high-current terminals> large current terminal diameter greater than the cable terminal head diameter;

(2) Try not to disassemble the zero-sequence high-current terminals during construction.> High-current terminals should be disassembled and must be restored to the original condition after the work is over.

(3) The ground wire shall be braided copper wire or tinned copper wire, the cross section of the grounding wire should not be less than 25 mm2, the grounding terminal should be welded, and the grounding wire and zero sequence high-current terminal should be handled properly.> High current The relative position of the terminals, the ground wire must be installed on the ground copper row;

(4) The zero-sequence protection system should be set before power-on to ensure the protection works normally.