Hilti Product
Technical Guide
Supplement
X-BT-ER
Electrical
Connection
Systems
Supplement to
Hilti North American
Product Technical Guide
Volume 1:
Direct Fastening
Technical Guide
Electrical Connection Systems
3.2.11 Electrical Connection Systems
3.2.11.1 Product Description
3.2.11.1 Product Description
3.2.11.2 Material Specifications
X-BT-ER stainless steel threaded
studs are designed for electrical
connections under permanent current,
short circuit current and lightning
current conditions. Packaged with
two stainless nuts and one stainless
steel lock washer, the X-BT-ER can be
used for electrical grounding such as
bonding and lightning protection under
corrosive environments. The X-BT-ER
is available in W6/7 SN4 and
W10/3 SN4 sizes.
3.2.11.3 Technical Data
3.2.11.4 Installation Instructions
3.2.11.5 Ordering Information
Reliable: Stainless steel stud is
generally suitable for corrosive
industrial environments. The
vibration resistant stud prevents
the connection from accidentally
coming loose.
•
Simple: Drill, fasten and connect.
External power source is not
needed and not dependent
on weather.
CR 500 (CrNiMo alloy) S31803 Equivalent
to A4 / AISI grade 316 material
② Threaded sleeve
X5CrNiMo 17-12-2+2H, 1.4401
③ SN washer
S 31635 (X2CrNiMo 17-12-2, 1.4404)
④ Sealing washer
Elastomer, black; Resistant to UV, salt
water, water, ozone, oils, etc.
⑤ Nuts
Equivalent to A4 / AISI grade 316 material
⑥ Lock washers
Equivalent to A4 / AISI grade 316 material
⑦ Removable Guide Sleeve
Plastic
5
6
5
1
7
3
24 [0.945"]
4
31.3 [1.232"]
5
6
5
Ø 12
[0.472"]
Ø 4.5
[0.177"]
① Shank
Ø 12
[0.472"]
Ø 4.5
[0.177"]
M10/
W10
•
Fastener Material
R
3
Fast: A connection can be made in
less than 1 minute. Removing and
reapplication of coatings are not
required.
Part
M6/
W6
UL (Underwriters Laboratories)
E257069
ABS (American Bureau of Shipping)
Lloyds Register
GL (Germanischer Lloyd)
DNV
BV (Bureau Veritas)
2
•
3.2.11.2 Material Specifications
Listings/Approvals
1
Product Features and Benefits
5
[0.197"]
X-BT-ER W10/3 SN4
5
[0.197"]
2.39
[0.094"]
20 [0.787"]
4
31.3 [1.232"]
5
[0.197"]
5
[0.197"]
1.58
[0.062"]
X-BT-ER W6/7 SN4
1 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
Electrical Connection Systems
Electrical Connection Systems 3.2.11
3.2.11.3 Technical Data
Application Examples
Functional and protective bonding in pipe
(Outer diameter of installed surface ≥ 5.9’’
Protective bonding circuit – Double point
connection
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
Recommended electrical connectors:
Maximum allowable permanent current
•
•
= 40A
X-BT-ER W10/3 SN 4
X-BT-ER W6/7 SN 4
Note:
• Recommended connected cable size (tested to 40A) according to IEC/EN
60204-1: ≤ 10mm2 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.
Protective Bonding Circuit
For discharging short circuit current while protecting electrical equipment or earth / ground or bond cable trays and ladders
Single point connection
Recommended electrical connectors:
Max. short circuit current for period of 1s
•
•
= 1250A
X-BT-ER W10/3 SN 4
X-BT-ER W6/7 SN 4
Note:
• Recommended connected cable size (tested to 1250A for 1s) following IEC/EN
60947-7-2: ≤ 10mm2 copper (≤ 8AWG). Fastening of thicker cable is acceptable
provided the maximum current of 1250A for a period of 1 second is not
exceeded and the provisions on cable lug thickness are observed.
•
Double point connection
Recommended connected cable size (tested to 750A for 4s) according to
UL 467: ≤ 10AWG
Recommended electrical connectors:
Max. short circuit current for period of 1s
•
= 1800A
X-BT-ER W6/7 SN 4
Note:
• Recommended connected cable size (tested to 1800A for 1s) following IEC/EN
60947-7-2: ≤ 16mm2 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.
Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015 2
Electrical Connection Systems
3.2.11 Electrical Connection Systems
Lightning Protection
For high temporary current due to lightning.
Single point connection
Recommended electrical connectors:
•
•
One nut with cable lug
X-BT-ER W10/3 SN 4
X-BT-ER W6/7 SN 4
Maximum current (According to
EN50164-1 and EN 50164-1/prA:2005):
≤ 50kA 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 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 = 0.079" to 0.47" (2mm to 12mm). Cable lug hole diameter
≥ 0.51" (13mm).
Max. tightening torque = 5.90 ft-lb (8Nm).
Recommended electrical connectors:
Maximum tested current:
•
≤ 100kA for 2ms
X-BT-ER W10/3 SN 4
3 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
Electrical Connection Systems
Electrical Connection Systems 3.2.11
3.2.11.4 Installation Instructions1,2
> 8mm [5/16"]
1. 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 ≤ 0.0157'' (0.4 mm). For
thicker coatings, please contact Hilti.
2. Install bottom nut followed by cable lug, lock washer and second nut. The
bottom nut must not touch the X-BT SN washer.
3. For double point connection, the total thickness of cable lug tcl must be
≤ 0.28" (7mm)
4. For single point connection, the thickness of cable lug tcl must be ≤ 0.12" (3mm)
5. Hold the bottom nut with a spanner while tightening the upper nut.
Tightening torque: Min. 5.90 lb-ft (8 Nm)
Max. 14.75 lb-ft (20 Nm)
1 These are abbreviated instructions which may vary by application. ALWAYS review and follow the instructions accompanying the product.
2 Installation instructions for blunt-tip X-BT fasteners are provided in Section 3.2.10.4 of Hilti North American Product Technical Guide Volume 1:
Direct Fastening Technical Guide.
Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015 4
Electrical Connection Systems
3.2.11 Electrical Connection Systems
3.2.11.14 Installation Instructions (Continued)
Single Point Connection for all X-BT-ER
Double Point Connection Only for X-BT-ER W6
One Nut Connection Only for X-BT-ER W10
3.2.11.15 Ordering Information*
X-BT-ER Stainless Steel Threaded Studs
Description
Notes
Packaging
Quantity
X-BT-ER W10/3 SN4
Including two nuts and one lock washer
100
X-BT-ER W6/7 SN4
Including two nuts and one lock washer
100
* Ordering information about tools and cartridge can be found on page 65 of Hilti North American Product
Technical Guide Volume 1: Direct Fastening Technical Guide .
5 Hilti, Inc. (US) 1-800-879-8000 | www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I Direct Fastening Technical Guide 2015
Hilti. Outperform. Outlast.
Hilti, Inc. • 7250 Dallas Parkway, Suite 1000, Plano, TX 75024 • (US) 1-800-879-8000 www.us.hilti.com • Servicio
al Cliente en español 1-800-879-5000 • Hilti (Canada) Corporation 1-800-363-4458 www.hilti.ca • Hilti is an equal
opportunity employer Hilti is a registered trademark of Hilti, Corp. ©Copyright 2011 by Hilti, Inc. • H470 • 3474859
• 10/15 BB
The data contained in this literature was current as of the date of publication. Updates and changes may be made based on later testing. If verification is needed that the
data is still current, please contact the Hilti Technical Support Specialists at 1-800-879-8000. All published load values contained in this literature represent the results
of testing by Hilti or test organizations. Local base materials were used. Because of variations in materials, on-site testing is necessary to determine performance at any
specific site. Printed in the United States
*ISO 14001 US Only