Siemens SENTRON 3WA1 - Function Packages; General; Ground-Fault Alarm; Directional Protective Functions

Description
2.6 Function packages
3WA1 air circuit breaker
128 Equipment Manual, 02/2023, 92310000002-06
2.6 Function packages
2.6.1 General
The properties of the 3WA circuit breaker can be extended by digital function packages.
They allow an individual and application-specific design of the protection and metering
functionality.
Note
The function packages can only be used with the ETU600 electronic trip unit. Installation
is not possible when using the
ETU300 electronic trip unit.
The function packages can be installed in the ETU600 electronic trip unit via the USB-C
interface using the SENTRON powerconfig configuration software. This is also possible
directly before the switchgear is commissioned and without having to replace the
electronic trip unit.
2.6.2 Ground-fault alarm
With this function package, a high-resistance ground fault can be detected and signaled
without switching off the system.
2.6.3 Directional protective functions
The basic protection of the ETU600 electronic trip unit can be extended with directional
protective functions:
• Directional short-time-delayed short-circuit protection dST
• Reverse power protection RP