Eaton DC1-124D1FN-A20N - Engineering; Electrical Power Network

2 Engineering
2.1 Introduction
DC1 Frequency Inverter 10/12 MN04020003Z-EN www.eaton.com 29
2 Engineering
2.1 Introduction
This chapter describes the most important features in the energy circuit of a
magnet system (PDS = Power Drive System), which you should take into
consideration in your project planning.
Figure 8: Example of a magnet system with a three-phase feeder unit
for a three-phase motor
a Network configuration, mains voltage, mains frequency, interaction with p.f. correction systems
b Fuses and cable cross-sections, cable protection
c Protection of persons and domestic animals with residual current protective devices
d Mains contactor
e Main choke, radio interference filter, line filter
f Frequency inverter: mounting, installation; power connection; EMC compliance; circuit examples
g Motor reactor, dV/dt filter, sinusoidal filter
h Motor protection; Thermistor overload relay for machine protection
i Cable lengths, motor cables, shielding (EMC)
j Motor and application, parallel operation of multiple motors on a frequency inverter,
bypass circuit; DC braking
k Braking resistance; dynamic braking
③
②
①
L1
L2
L3
PE
⑤
④
⑦
⑩
⑨
⑧
⑥
RCD
L1/L
L2/N
PE
U
VW
L3 PE
DC+
BR
M
3
ϑ
˜
PES
PES
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