| These earth bonds provide both electrical and mechanical connection on an earth wire to a steel structure. They consist in a pre-assembled tinned copper bush with a stainless steel dowel. |
 |
 Drill a hole |
 Set the bond |
 Connection |
| Plates |
Steel - Stainless steel
|
|||
| Plate thickness |
1.5 - 4mm
|
2 - 4 mm
|
> 4 mm
|
> 4 mm
|
| Earth bond thread |
M6
|
M10
|
M6
|
M10
|
| Ptnb |
80923
|
80924
|
80925
|
80926
|
| Drilling diameter |
 11.5 mm |
19 mm |
8.5 mm |
13.5 mm |
| Setting tool |
PMT6
|
PMT10
|
PMT6
|
PMT10
|
| Tightening torque |
6 Nm
|
30 Nm
|
6 Nm
|
30 Nm
|
| Plans |
 |
 |
 |
 |
ELECTRICAL PERFORMANCE
| Ptnb |
80923
|
80924
|
80925
|
80926
|
| Electrical resistance measured between the terminal lug and the steel plate (thickness) |
25 µOhm
(2 mm) |
20 µOhm
(2 mm) |
25 µOhm
(4 mm) |
20 µOhm
(4 mm) |
| Electrical resistance measured between the terminal lug and the stainless steel plate (thickness) |
120 µOhm
(2 mm) |
70 µOhm
(2 mm) |
75 µOhm
(4 mm) |
60 µOhm
(4 mm) |
| The earth bond has passed 3 short circuit tests on both 2 mm steel and stainless steel plate with no degradation of the connection |
10 kA
|
15 kA
|
10 kA
|
20 kA
|
| Corrosion test : The electrical resistance after 500 hours salt spray test remains lower than : - on 2 mm steel plate |
30 µOhm
|
25 µOhm
|
--
|
--
|
| - on 2 mm stainless steel plate |
150 µOhm
|
90 µOhm
|
--
|
--
|
MECHANICAL PERFORMANCE
| Ptnb |
80923
|
80924
|
80925
|
80926
|
| Tensile load test : The earth bond connection can accept a tensile load of : (plate thickness) |
400 daN
(2 mm) |
500 daN
(2 mm) |
500 daN
(4 mm) |
800 daN
(4 mm) |
| Pressure seal : Pressure load applied for 2 hours with no air leak between the earth bond and plate : |
6 Bar
|
6 Bar
|
6 Bar
|
6 Bar
|
| Terminal lug rotation test : Rotation torque applied to the terminal lug with no rotation of the self locking nut or the earth bond : |
7 Nm
|
35 Nm
|
10 Nm
|
20 Nm
|