5 shielding, 1 shield connection, 2 shielding -what do you need to consider – Lenze Inverter EMC User Manual
Page 11: Shielding, Shield connection, Shielding - what do you need to consider, 5shielding, 2 shielding - what do you need to consider
Shielding
9
l
EDBEMV EN 1.3
5
Shielding
5.1
Shield connection
The quality of shielding is determined by:
z
a good shield connection
– a contact surface as large as possible
z
a low resistance:
– Only use shields with tin-plated or nickel-plated copper braids!
– Shields of steel braid are not suitable.
5.2
Shielding - what do you need to consider?
z
Always connect the shield to the conductive and grounded mounting plate with a surface as
large as possible via a conductive clamp.
z
Connect the shield directly to the corresponding device shield sheet.
z
Do not only connect the shield to the cable rail.
z
The unshielded cable ends must be as short as possible.
•
Short unshielded cable ends
•
Terminals must be separated, minimum distance: 100 mm
•
Minimum distance between the shield clamps for control cable and
motor cable: 50 mm
Fig. 5
Shielding for frequency inverters
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