Ground Fault - Siemens SIRIUS 3RW55 Manual

Functions

7.9 Ground fault

7.9 Ground fault
Operating principle
The "ground fault" function of the 3RW55 soft starter records and monitors all three phase
currents. By evaluating the summation current of the three current values, the motor feeder
can be monitored for a possible residual current or ground fault.
Parameters
Parameters
Ground fault limit warning
Ground fault limit error
130
Description
If the ground fault current exceeds this limit, a warning is generated
and the motor is not switched off. The parameter value "0"
deactivates the monitoring of the limit value.
Factory setting: 0%
•
Limit: 10 ... 95%
•
Increment: 5%
•
If the ground fault current exceeds this limit, a fault is generated
and the motor is switched off. The parameter value "0" deactivates
the monitoring of the limit value.
Factory setting: 20%
•
Limit: 10 ... 95%
•
Increment: 5%
•
Manual, 08/2018, A5E35630887002A/RS-AB/002
SIRIUS 3RW55 soft starter