Electrical Power Network; Mains Connection And Configuration; Mains Voltage And Frequency - Eaton Rapid Link 5 Manual

2.4 Electrical power network

2.4.1 Mains connection and configuration

2.4.2 Mains voltage and frequency

The RAMO5 and RASP5 Rapid Link modules can be connected and operated
with all neutral-earthing AC power networks (see IEC 60364 for more infor-
mation in this regard).
L1
L2
L3
N
PE
Figure 16: AC power networks with earthed center point (TN-/TT networks)
It is not permitted to connect or operate frequency inverters in asymmetri-
cally grounded TN networks (phase-grounded Delta network, grounded
Delta, USA), non-grounded networks, or high-resistance grounded
(over 30 Ω) IT networks.
.
￫
Measures for electromagnetic compatibility are mandatory in a
power drive system, to meet the legal standards for EMC- and
Low Voltage Directive.
Good earthing measures are a prerequisite for the effective use
of further measures such as screen earth kit or filters here.
Without respective grounding measures, further steps are
superfluous.
The standardized rated operating voltages (IEC 60038, VDE017-1) of utility
companies guarantee the following conditions at the transition points:
• Deviation from the rated voltage value:
±10 % or less
• Deviation in the voltage balance:
±3 % or less
• Deviation from the rated frequency value:
±4 % or less
The lower voltage value also makes allowance for the permitted voltage drop
of 4 % in consumer networks, i.e. a total of
U - 14 %:
LN
400 V - 15 % - 400 V + 10 % (380 V - 10 % - 480 V + 10 %)
(340 V - 0 % - 440 V + 0 %) (342 V - 520 V)
The permitted frequency range in all voltage ranges is 50/60 Hz here
(45 Hz - 0 % – 66 Hz + 0 %).
Rapid Link 5 · RAMO5 · RASP5 05/20 MN034004EN www.eaton.com
2.4 Electrical power network
L1
L2
L3
PEN
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