Torque Settings And Bolt Order - ABB PCS100 UPS-I User Manual

PCS100 UPS-I User Manual

19.7 Torque settings and Bolt order

Following table shows torque settings recommended for the power cable connections.
Tightening Torque for Standard Bolts and Nuts
Diameter Pitch
(mm) (mm)
M5 0.8
M6 (battery
1.0
terminals)
M6 1.0
M8 1.0
M10 1.25
M12 1.25
Table 19-2: Tightening torques
* Stainless steel screws in to copper battery terminal.
Must use insulated tool to avoid dangerous accidental
flashover.
Torque Nm (lb ft)
Use only high tensile bolts
4.5 (3.6)
4.0 (3.2) *
7.2 (5.3)
16 (11.8)
28 (20.7)
45 (33.2)
Figure 19-2: Bolt order
141
Bolt
Flat Washer
Flat Washer
Schnorr
Nut