Siemens SENTRON 3WA1 - Page 565

Appendix
A.5 Device numbers according to IEEE standard C37.2
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
563
The enhanced protective functions of the ETU600 electronic trip unit can be described
by the following device numbers:
Enhanced protective functions EPF
Device number
Function according to IEEE C37.2
Current unbalance
46
Current unbalance protection
Voltage unbalance
47
Voltage unbalance protection
Undervoltage
27
Undervoltage protection
Overvoltage
59
Overvoltage (surge) protection
Forward power
32F
Active power protection
Reverse power
32R
Reverse power protection
Underfrequency
81O
Underfrequency protection
Overfrequency
81U
Overfrequency protection
THD current
81THDC
Voltage distortion protection
THD voltage
81THDV
Current distortion protection
Phase rotation
46R
Phase rotation protection (phase sequence
protection)
The circuit breaker and accessories fulfill these functions of the IEEE C37.2 standard:
Function of the circuit breaker
Device number
Function according to IEEE C37.2
Output from digital input/output module
IOM230 and IOM350 as well as ETU300 and
ETU600
74
Alarm relay
AC circuit breaker
52
AC circuit breaker
DC non-automatic air circuit breakers
72
DC non-automatic air circuit breakers
COM150, COM190 communication modules
16
Data communication device, communications
interface