The insulated Joint MJPT is used for main line conductors with mechanical load. Crimping is done over the insulation according to engraved marks on the Joint MJPT with crimping insert E 173 and E 215. After crimping process the Joint effectuates electrical contact and waterproofness by elastomer rings. Waterproofness is tested in the water under voltage of 6 kV for a period of 30 minutes.

Elastomer ring is made in different colors so that cross sections can be recognized more easily. The inside of the Joint is filled with electrical contact grease.

Mechanical strength of the joint is: For BC with all aerial bundled conductors: 80% of breaking force of the conductor;

For BC with suspension conductor: 50% of breaking force of phase conductor; 100% of breaking force of insulated suspension conductor;