ABB ACS355 - Page 368

368 Technical data
EMC compatibility and motor cable length
To comply with the European EMC Directive (standard
IEC/EN 61800-3), use the following maximum motor cable lengths
for 4 kHz switching frequency.
Note 1: The internal EMC filter must be disconnected by removing
the EMC screw (see the figure on page 48) while using the low
leakage current EMC filter (LRFI-XX).
Note 2: Radiated emissions are according to C2 with and without an
external EMC filter.
Note 3: Category C1 with conducted emissions only. Radiated
emissions are not compatible when measured with standard
emission measurement setup and should be checked or measured
on cabinet and machine installations case by case.
All frame
sizes
Maximum motor cable length, 4 kHz
m ft
With internal EMC filter
Second environment
(category C3
1)
)
30 100
With optional external EMC filter
Second environment
(category C3
1)
)
30 (at least)
2)
100 (at least)
2)
First environment
(category C2
1)
)
30 (at least)
2)
100 (at least)
2)
First environment
(category C1
1)
)
10 (at least)
2)
30 (at least)
2)
1)
See the terms in section Definitions on page 373.
2)
Maximum motor cable length is determined by the drive’s
operational factors. Contact your local ABB representative for the
exact maximum lengths when using external EMC filters.