Lenze i750 - Compliance with EMC Category C3 (Industrial Premises)

Compliance with EMC category C3 (industrial premises)
Applicaons f
or the "second environment" in the industrial sector must comply with EMC
category C3.
DC bus connecon with one supplier or suppliers connected in parallel
Precondions
•
The maximum sum of all motor cable lengths ∑ l
mot
must be observed.
•
Max. motor cable length per inverter: 50 m.
When oper
ang with RFI lter without mains choke: Compliance with EMC
category C3 only for switching frequencies 4 kHz and 8 kHz.
∑ l
mot
t
o comply with EMC category C3:
∑ I
mot
[m]
C3-2
n
20
18
16
14
12
10
8
6
4
2
50 100 150 200 250 300 400 500350 450
C3-1
Fig. 6: Max. Sum of all motor cable lengths to comply with EMC category C3
n Number of inverters
C3-1
Max. sum of all motor cable lengths
with RFI lter without mains choke
C3-2 Max. Sum of all motor cable lengths
with RFI lter and mains choke
Informaon on pr
oject planning
DC-bus connecon
Compliance with EMC category C3 (industrial premises)
40