stainless steel threaded studs for electrical connections Product data X-BT-ER Dimensions 1 2 3 1 7 2 M8 Ø 4. [0.177"] 1 M10/ W10 3 Ø 12 [0.472"] 24 [0.94"] 4 4 31.3 [1.232"] [0.18"] 7 M6/ W6 3 Ø 4. [0.177"] Ø 4. [0.177"] Ø 12 [0.472"] 6 4 [0.18"] 2 [0.079"] General information Material specifications 1 Shank: CR 00 (CrNiMo alloy) S31803 (1.4462) Recommended fastening tools DX 31-BT See X-BT-ER fastener program in the next pages and tools and equipment chapter for more details. Approvals for X-BT-ER stainless steel threaded studs for electrical connections UL, ABS, LR, DNV-GL, BV Ø 12 [0.472"] 24 [0.94"] 4 31.3 [1.232"] 6 2.4 [0.094"] 6 Equivalent to A4 / AISI grade 316 material 2 Threaded sleeve: XCrNiMo 17-12-2+2H, 1.4401 3 SN washer: S 3163 (X2CrNiMo 17-12-2, 1.4404) 4 Sealing washer: Elastomer, black * * Resistant to UV, salt water, water, ozone, oils, etc. Nuts A4 / AISI grade 316 material 6 Lock washers A4 / AISI grade 316 material 7 Guide Sleeve Plastic R 20 [0.787"] 4 31.3 [1.232"] 1.6 [0.062"] Applications Examples Functional and protective bonding in pipe (Outer diameter of installed surface 10mm) Protective bonding circuit - Double point connection 12/2017 www.hilti.group 231
Functional Bonding and Terminal connection in a circuit For low permanent current due to static charge built up in pipes or for low permanent current when closing an electrical circuit Single point connection Protective bonding circuit Single point connection Maximum allowable permanent current = 40A Note: Recommended connected cable size (tested to 40A) according to IEC/ EN 60204-1: 10mm 2 copper ( 8AWG). Fastening of thicker cable is acceptable provided the maximum permanent current of 40A is not exceeded and the provisions on cable lug thickness are observed. For discharging short circuit current while protecting electrical equipment or earth / ground or bonded cable trays and ladders Max. short circuit current for period of 1s = 120A Note: Recommended connected cable size (tested to 120A for 1s) following IEC/EN 60947-7-2: 10mm 2 copper ( 8AWG). Fastening of thicker cable is acceptable provided the maximum current of 120A for a period of 1 second is not exceeded and the provisions on cable lug thickness are observed. Recommended connected cable size (tested to 70A for 4s) according to UL 467: 10AWG Double point connection Max. short circuit current for period of 1s = 1800A Note: Recommended connected cable size (tested to 1800A for 1s) following IEC/EN 60947-7-2: 16mm 2 copper ( 6AWG). Fastening of thicker cable is acceptable provided the maximum current of 1800A for a period of 1 second is not exceeded and the provisions on cable lug thickness are observed. 232 www.hilti.group 12/2017
Lightning protection For high temporary current due to lightning. Single point connection Maximum current (According to EN0164-1 and EN 0164-1/prA:200): 0kA for 2ms When one nut is utilized and cable lug is in contact with base material. Cable lug must be in direct contact with non-coated base material. Extra M10/W10 SS 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 = 2mm to 12mm. Cable lug hole diameter 13mm. Max. tightening torque = 8Nm. Maximum tested current: 100kA for 2ms Application requirements Thickness of base material Thickness of cable lug Base material corrosion protection layer Thickness of base material corrosion protection layer 0.4mm. For thicker coatings, please contact Hilti. X-BT-ER M10/W10 t cl 3mm (0.12 ) X-BT-ER M8 X-BT-ER M6/W6 t cl 7mm (0.28 ) 12/2017 www.hilti.group 233
Spacing and edge distances Edge distance: 6 mm > 6 [0.236"] > 6 [0.236"] > 1 > 6 > 1 [0.91"] [0.236"] [0.91"] Spacing: 1 mm > 6 > 1 [0.236"] [0.91"] > 1 [0.91"] > 8mm [/16"] > 8mm [/16"] Corrosion information The corrosion resistance of Hilti CR00 and S31803 stainless steel material is equivalent to AISI 316 (A4) steel grade. Application limit t II 8 mm [/16 ] No through penetration No limits with regards to steel strength Fastener selection and system recommendation Fastener program Tool Fastener Guide Designation Item no. designation designation 2103094 DX 31-BT BT FG M1024 2103093 DX 31-BT BT FG W1024 210309 DX 31-BT BT FG M1024 210727 DX 31-BT BT FG M1024 2103096 DX 31-BT BT FG W1024 Cartridge selection and tool energy setting 6.8/11 M high precision brown cartridge Fine adjustment by installation tests on site 234 www.hilti.group 12/2017
Fastening quality assurance Fastening inspection hnvs X-BT-ER M/W10, X-BT-ER M8 and X-BT-ER M/W6 h NVS = 2.7 26.8 mm = 1.01 1.0 Installation for electrical connections Single point connection for all X-BT-ER Double point connection only for X-BT-ER M6/W6 and X-BT-ER M8 12/2017 www.hilti.group 23
Torque recommendation for X-BT-ER Hold the bottom nut with a spanner while tightening the upper nut. Tightening torque: Min. 8 Nm Max. 20 Nm These are abbreviated instructions which may vary by application. ALWAYS review/follow the instructions accompanying the product. 236 www.hilti.group 12/2017