2 Engineering
2.5 Safety and Protection
Rapid Link 5 · RAMO5 · RASP5
10/19 MN034004EN
www.eaton.com
43
2.5.2 Residual-current device (RCD)
RCD (Residual Current Device) Residual current protective device, residual
current protective device (residual current protective circuit breaker).
Residual current circuit breakers protect persons and animals from the exis-
tence (not the origination) of impermissibly high touch voltages.
They prevent dangerous, sometimes fatal injuries in the event of power
accidents and also serve to prevent fire.
RASP5 work internally with rectified AC currents. If an error occurs, the DC
currents can block an RCD circuit breaker of type A from triggering and there-
fore disable the protective functionality.
On RASP5 safety-relevant leakage currents can occur during operation when
RASP5 is not grounded (due to a fault).
Leakage currents to ground are mainly caused by external capacities in
RASP5; between the motor phases and the shielding of the motor cable.
The size of the leakage currents is mainly dependent upon the:
•
length of the motor cable,
•
shielding of the motor cable,
•
height of the pulse frequency (switching frequency of the inverter),
•
type of RFI filter,
•
Grounding measures at the site of the motor.
ATTENTION
Residual current circuit breakers (RCD) are only to be installed
between the AC power supply network and the Rapid Link
modules RAMO5 and RASP5.
WARNING
For RASP5, only all current-sensitive residual current protective
devices (RCD, type B) may be used (EN 50178, IEC 755).
Identification on the residual current circuit breaker
AC/DC sensitive (RCD, type B)
→
The leakage current to ground is greater than 3.5 mA for
RASP5. A reinforced grounding (PE) must therefore be con-
nected in accordance with the requirements of EN 50178.
The cable cross-section must be at least 10 mm
2
, or the ground-
ing system must consist of two separately connected ground
cables.
Содержание Rapid Link RAMO5
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Страница 122: ...4 Operation 4 3 Manual control 118 Rapid Link 5 RAMO5 RASP5 10 19 MN034004EN www eaton com ...
Страница 136: ...5 RAMO5 Motor starter 5 7 Configure special settings 132 Rapid Link 5 RAMO5 RASP5 10 19 MN034004EN www eaton com ...
Страница 158: ...8 PC tool 8 2 Parameter Editor 154 Rapid Link 5 RAMO5 RASP5 10 19 MN034004EN www eaton com ...
Страница 164: ...9 Control Unit 9 2 Extended parameter set 160 Rapid Link 5 RAMO5 RASP5 10 19 MN034004EN www eaton com ...
Страница 194: ...10 Parameter list 10 4 Parameter groups for RASP 190 Rapid Link 5 RAMO5 RASP5 10 19 MN034004EN www eaton com ...
Страница 208: ...11 Communications 11 5 OP Bus 204 Rapid Link 5 RAMO5 RASP5 10 19 MN034004EN www eaton com ...
Страница 216: ...12 Error messages 12 3 RASP Error list 212 Rapid Link 5 RAMO5 RASP5 10 19 MN034004EN www eaton com ...