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Diesel generator sets generally speaking lead wires are more need to pay attention to the place, diesel generator set lead wire installation according to the installation location can be divided into indoor and outdoor type; according to the busbar structure and the way of connection can be divided into open busbar and blocked busbar two types. The open busbar used for the connection of busbar bridge and combination of conductors, the former is applicable to indoor and outdoor, the latter is only applicable to outdoor.

       When the diesel generator set is below 200kw, the lead-in wire adopts the open busbar; when the generator is 200kw and above, the lead-in wire adopts the fully connected phase-separated blocked busbar. The main drawback of using open busbar for diesel generator sets is that the insulator appearance is easily dirty, especially when the busbar is arranged outside the house, which is more and more serious by climate change and pollution, easily forming flashover discharge and busbar short circuit problems. With the increase of the single machine capacity, the operation reliability of the diesel generator export busbar has put forward higher requirements, at the same time, the busbar capacity increases, the busbar short-circuit electric power and the loss and heat generation of the steel structure near the busbar increases greatly. In practice, the use of phase-blocking busbar measures is a better way to deal with each phase of the busbar are wrapped with aluminum shell, shell eddy current and circulation can play a double shielding effect, the shell and shell magnetic field is greatly reduced, so that the left near the steel heating improved.