Weco 4K4LT - Fixing Pair Specifications

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WeCo Srl Italy www.wecobatteries.com 4K4LT V1.00 24/01/2023
Fixing pair
Screw
diameter (ISO)
Maximum
fixing
torque
Application
Construction
Applied torque
Code
[Nm]
[Nm]
M3 ·
1.7
BMS protection cover
1,2
M4 ·
3.8
External covers
3
M5 ·
7.5
Isolators and contactor support
7
M6 ·
10
Fuses, Cables, Connection to terminals / feet / brackets /
wall sockets
9.5
M8 ·
14
Steel plastic and cables on terminal block / feet / brackets
/ dowels
13
M8 ·
32
Connection steel on steel / steel to copper / contactor
terminal to bus bar)
16
M10 ·
62
External Bus Bar (Aluminum and Copper) steel fitting on
steel
40
M12 ·
107
External connections, copper-copper joints
60
If during the quarterly check the screws have a residual torque lower than these values, it means that the cables and / or
the bar are subjected to out-of-flow currents, as the thermal effect helps to loosen the screws / bolts.
ATTENTION
During the quarterly check, make sure that the START and STOP phases are functioning correctly.
Clean the RJ45 ports and clean the side louvers for ventilation.
Check the correct functioning of all RS485 and CAN communication devices