GN19-12 Indoor Disconnect Switches High Voltage Isolation Switch

Structure and working principle

The conductive part of GN19-12/400, 630, 1000, 1250 type disconnect switch is fixed on the base by two pillar insulators for each phase. (GN19-12C/400, 630, 1000, 1250 type has one pillar insulator and one porcelain casing insulator.) The three phases are installed in parallel, and the conductive part consists of static contacts of contact knives and contact holders (or conductive rods). Each phase of the contact knife are connected to the middle of the tie insulator, tie insulator and installed on the base of the spindle connected. The spindle is connected to the connecting rod (user-provided) and CS6-1 type of moving mechanism through the handle. The connecting contact knife is composed of two slotted copper plates, which not only increases the heat dissipation area of the contact knife to lower the bottom temperature, but also improves the mechanical strength of the contact knife, so that the dynamic stability of the switch is improved. One end of the contact knife is mounted on the contact block (or on the conductive rod) by a bolt (car of Shaw). GN19-12/1000, 1250 in contact with the installation of magnetic locking plate, plus the purpose of the magnetic locking plate is that when a large short-circuit current to enhance the two groove contact knife between the| attraction. GN19-12/400, 630 disconnect switches have a small limit through current, so there is no need to add a magnetic locking plate.

Drawing