The IMT insulated handling rods are used to perform manual handling operations on QAK and QAKZ disconnectors, and on self-contained SP-CB type drives, in case of emergency. The handling rods are delivered in two different designs, without and with a slip clutch. The slip clutch equipped insulated handling rods have necessarily to be used on the FE type disconnectors in which the disconnector switching mechanism might become damaged due to improper handling. The slip clutch torque is set during the manufacture of the disconnector for which the rod is intended to be used. The main criterion for the slip torque determination is the rated current of the switching device, which ranges within 1 to 15 Nm. Disconnectors of F and FM types, and also those equipped with the SP-CB self-contained drives are using handling rods without the clutch.
The insulated handling rods are terminated with a key-operated adapter with joint, delivered normally in LF = 1000 mm to 3700 mm length. The shortes length of handling rod, which can be delivered, is LF = 850 mm.
The number of rods to be used within the switching station is specified by the designer and depends on the number of disconnectors and the structural arrangement of the switching station (e.g. the number of storeys).
