Subject to modifications and errors
Page 10 of 71
2019-06-26 edition
3
Function
3.1
Features
•
Simple implementing through pre-defined setups for country-specific standards and guidelines
with parameters that can be set within a wide range.
•
Wide nominal voltage and nominal frequency range, configurable nominal voltage
•
Additional "Open setup" for free, practically unlimited parametrization in the field
•
Single-fault tolerance
•
Cyclical self-test
•
Monitoring of the connected section switch
•
Remote shutdown
•
Loss of mains detection (RoCoF, PShift, phase voltage)
•
Software update option in the field
•
Upgradable communication interface
•
Test function with the determination of the turn-off time
•
Monitoring of 1- and 3- phase grids for low and medium voltage grids
•
Error memory with time stamp (50 entries)
•
Password protection and ability to seal
•
Random turn-off thresholds and turn-on times for non-controllable energy producers (e.g. CHP)
3.2
Functional description
Depending on the configuration selected, the device can handle several monitoring functions at the same
time.
After exceeding a threshold value, the device switches off after a turn-off delay that is defined especially for
each threshold value. When the test function or the remote shutdown is activated, the device switches off
immediately. Only once all monitored parameters are within the permissible limits and the remote
shutdown deactivated does the device switch back on after a defined turn-on time.
If not specified otherwise, the nominal voltage is 230 V / 400 V and the nominal frequency 50 Hz.
