Lenze E82xVxxxKxxxxx - Manual (Page 115)

Electrical installation
Basics for wiring according to EMC
Shielding
6
l
115 EDS82EV903 EN 3.0
6.3.2 Shielding
Requirements
The quality of shielding is determined by:
ƒ a good shield connection
– a contact surface as large as possible
ƒ a low resistance:
– Only use shields with tin−plated or nickel−plated copper braids!
Connection system
ƒ Connect the shield with a large surface and fix it with metal cable binders or a
conductive clamp.
ƒ Connect the shield directly to the corresponding device shield sheet.
– If required, additionally connect the shield to the conductive and earthed
mounting plate in the control cabinet.
– If required, additionally connect the shield to the cable clamp rail.
Motor cables
ƒ If the motor cables must be interrupted due to chokes or terminals, the length of the
unshielded cable must not exceed 40 ... 100 mm (depending on the cable
cross−section).
ƒ If the motor cable must be interrupted by chokes, switches or terminals, these must
be installed separately from the other components (with a min. distance of
100 mm).
ƒ For cable lengths of up to 500 mm, a second shield connection is not required.
Motor supply cable Cable gland
Motor supply cable
max. 500mm
Large-surface
contact of
cable shield
Braid
Heat-shrinkable tube
Cable gland acc. to EMC with
high degree of protection
Cable gland
8200EMV023 8200EMV024
Fig. 6−3 Shielding of the motor cable