Installation
Electrical installation − Important notes
4−6
L
EDB82MV752 EN 5.2
4.2.1.7 Specification of the cables used
Power terminals
The cables used must comply with the approvals required for the application (e.g. UL).
Use low−capacitance motor cables. Capacitance per unit length:
– Core/core 75 pF/m
– Core/shield 150 pF/m
Max. permissible motor cable length without external measures:
– unshielded: 10 m
– shielded: 10 m
Control connections
Control cables must always be shielded to prevent interference injections.
Shielded cables
The efficiency of shielded cables is determined by
a good shield connection
– a contact surface as large as possible.
a low shield resistance:
– only use shields with tin or nickel−plated copper braid!
– shields made of steel braid are not suitable.
the overlap rate of the braid:
– at least 70 to 80 % with an overlap angle of 90°.
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