Product Technical Guides : CA-EN Direct Fastening - Volume 1 Edition 22 | Page 81

Direct Fastening Technical Guide , Edition 24
Lightning protection For high temporary current due to lightning .
Single point connection
Recommended electrical connectors
Maximum current ( According to EN 62561-1:2012-01 )
X-BT-ER W10 / 7 SN 8 X-BT-ER W6 / 7 SN 8 X-BT-ER W6 / 3 SN 8
≤ 50kA for 2ms
One nut with cable lug
Recommended electrical connectors
Maximum tested current
When one nut is utilized and cable lug is in contact with base material
X-BT-ER W10 / 7 SN 8 X-BT-ER W6 / 7 SN 8 X-BT-ER W6 / 3 SN 8
≤ 100kA for 2ms
Cable lug must be in direct contact with non-coated base material . Extra W10 stainless steel washer to be used and installed between lock washer and cable lug . Base material must not contact the X-BT-ER SN washer , lock washer and nut . Cable lug thickness = 0.079 " to 0.47 " ( 2mm to 12mm ). Cable lug hole diameter ≥ 0.55 " ( 14mm ). Max . tightening torque = 14.8 ft-lb ( 20 Nm )
3.2.14.7.4 Installation parameters
> 8mm [ 5 / 16 "]
Thickness of base material must be ≥ 5 / 16 '' ( 8 mm ), spacing of the fasteners must be ≥ 5 / 8 '' ( 15 mm ), edge distance of the fasteners must be ≥ 1 / 4 '' ( 6 mm ).
Thickness of base material corrosion protection layer ≤ 0.02 '' ( 0.5 mm ). For thicker coatings , please contact Hilti .
Upper nut Lock washer Cable lug Bottom nut
Single point connection for all X-BT-ER
Upper nut Lock washer Cable lug Bottom nut
Double point connection for X-BT-ER W10 / 7 SN 8 81