NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
62 BU 0200 en-3118
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For operation on the IT network, simple adaptations must be carried out by relocating the jumpers
(C
Y
=OFF). which may result in impairment of the radio interference suppression.
The insulation resistance of the frequency inverter must be taken into consideration when operating on
an insulation monitor ( Section 7 "Technical data").
Pos: 14 3 /Anlei tung en/El ektr onik/FU und Star ter/2 . Mon tage un d Installation/Ele ktrischer Anschluss/SK 1xxE, SK 2xxE, SK xxxE-FD S/L eist u ngstei l/ Ele ktri sch er A nschl us s L eist ungs tei l_T eil 3 - Anpassung an IT-Netze_02 [SK 2xxE] @ 7\mod_1434543932687_388.docx @ 226755 @ @ 1
(1) = Jumper with size 1 - 3 (2) = Jumper with size 4
Figure 16: Jumpers for mains adaptation
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Adaptation to HRG networks – (from size 1)
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The device may also be operated in supply networks with a high resistance earthed star point (High
Resistance Grounding) (typical for the US American region). For this, the same conditions and
modifications must be taken into account as for operation in an IT network (see above).
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Use with differing supply networks or network types
The frequency inverter may only be connect to and operated in supply networks which are explicitly
stated in this section ( Section 2.4.2.1 "Mains supply (L1, L2(/N), L3, PE)")). Operation in deviating
network types may be possible, but must be explicitly checked and approved by the
manufacturer in advance.
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