NORD Drivesystems MI0700 - Manual (Page 37)

2 Implementation
MI 0700 GB-0414 37
Pos : 43 /Migrati onsl eitf aden/ SK 700E - SK 500E/2. U ms etz ung/ 2. 6 N etz filter @ 3\ mod_1362065565276_388. doc x @ 60726 @ 25 @ 1
2.6 Mains filter
The SK 700E-xxx-340-A (-RS2) frequency inverters in the power range of 1.5 kW to 22.0 kW feature
an integrated mains filter (Class A or C2) for a maximum motor cable length of 15 m and shielded
motor cable. In contrast, the SK 700E-xxx-340-O
frequency inverters of power range ≥ 30.0 kW do not
feature an integrated mains filter. The SK 5xxE frequency inverters already feature an internal Class B
or C1 mains filter (only sizes 1 to 4) for a maximum motor cable length of 5 m and shielded motor
cable. For a maximum motor cable length of 20 m and shielded motor cable, the internal mains filter
complies with EMC limit value classes A or C2 (all sizes). In order to comply with a higher radio
interference suppression level Class B or C1, adaptive mains filters as external accessories for
frequency inverter operation can be used with longer motor cables. There are two versions of these
external mains filters that are to reduce the emissions of electrical interference.
Versions
• Footprint mains filter
• Chassis mains filter
Footprint Chassis (low power) Chassis (high power)
Figure 6: Mains filter versions
The footprint mains filters of type SK LF1-460/xx-F for SK 700E frequency inverters are only
available for the power range of 1.5 kW to 22.0 kW. For SK 5xxE frequency inverters, only footprint
mains filters of type SK LF2-480/xxx-F are available for the power range of 11.0 kW to 37.0 kW. For
the SK 5xxE frequency inverters, 3 additional footprint combination mains filters of type SK NHD-
480/xx-F are available for the power range of 1.5 kW to 7.5 kW in addition to the mains filters
mentioned above. These footprint combination mains filters combine the advantages of a mains filter
and an additional integrated mains input choke in a single housing.
The chassis mains filters of type SK HLD 110-500/xxx are available for the entire power range of
1.5 kW to 160.0 kW of SK 700E frequency inverters. Up to a power 110 kW, these chassis mains
filters are also UL-approved and comply with radio interference suppression level Class A or C2 up to
a maximum motor cable length of 50 m. Applications with motor cable lengths of up to 25 m; Class B
or C1.
For application with an SK 5xxE frequency inverter, the identical, dependence of the input current,
chassis mains filter SK HLD 110-500/xxx can only be used in the power range of 11.0 kW to
160.0 kW. For more details regarding the allocation of the respective mains filters, refer to the
following sub-chapters.
Information EMC limit value classes
For more details regarding the EMC limit value classes and permitted motor cable lengths, please refer to the
respective manuals (BU 0700 and BU 0500 or BU 0505, see
www.nord.com ).