Installation of density relay:<br> The density relay is installed in the upper interface of the bus bar in the cross beam, and its cable is fixed on the cross beam with random clips, and finally connected to the socket on the spring mechanism.<br> Circuit breaker filled with SF6 gas:<br> Part of SF6 gas has been filled into the circuit breaker body at the factory, so it is not necessary to vacuumize each monopole at the site. However, the air in the gas passage communication pipe must be removed, and the SF6 gas cylinder is connected with the inflation valve with the provided inflation and deflation tool, and the packaging cover on the gas passage communication is removed. After the gas cylinder is opened and blown with SF6 gas for 5s, the gas passage communication pipe is connected with the inflation valve on each monopole immediately, and it is slowly charged to the rated pressure.
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