Support device MSG 116 is designed to be installed on sub-station frames. The installation both makes lifting of heavy earthing devices easier and safer for the lineman. Using the device it is easy to slide the insulating pole with the earthing device up to the line.
The device can be installed on frames of max. 20 mm thickness. Holes for M 16 bolts are required for the installation on the frame.
If the earthing point is placed as high as possible on a substation frame the earthing line length can be shortened to a length approx. that of the insulator for the measured voltage.
Based on this principle the device will be easier to lift and the earthing cable does not need to be touched by the person carrying out earthing, which results in increased personal safety.
The figure illustrates the principle of the earthing procedure.
Contact fitting JBAS 200, a loop on an Al-profile, is installed high on the frame with a balt group. At the same height the support device, MSG 116, is installed to help lifting of tools.
The earthing device is type JK42-JK42, or JK47-JK47.