Keepers: malleable cast iron/ hot dip galvanized
Bolt: stainless steel A2-70
Nuts: stainless steel A2-70
Washer: stainless steel 200 HV
Lock washer: stainless steel
These clamps are used to connect the ends of copper, steel, aluminium and ACSR-earth wires non-tensioned to the tower. The earth wires must have equal diameters.
Two clamps are preferably located in a distance of 70 mm.
The bottom keeper being mounted to the tower has differently sized conductor grooves on its upper and bottom face. The keeper is to be reversed such that it can
accommdate the conductor to be connected.
Before installing, the conductor grooves of the keepers and the conductor ends are to be steel wire brushed (e.g. acc. to sheet B198/1) to remove the adherent
contamination and the oxide layer. After having put the conductor ends into the clamp the hexagon nut is to be tightened with an installation torque of 60 Nm.