Siemens SENTRON 3WA1 Manual page 188

Description
2.9 Self-monitoring and diagnostics
Stored measured values
Depending on the trip cause, the following measured values are stored and shown on the
display:
Basic protective functions
L: Long time LT
L: Long time LT, neutral conductor
S: Short time ST
S: Directional short time dST forward
S: Directional short time dST reverse
I: Instantaneous INST
G: Ground fault GF Residual
G: Ground fault GF Direct
G: Ground fault GF Dual UREF
G: Ground fault GF Hi-Z UREF
Reverse power RP
Enhanced protective functions EPF
Unbalance
Harmonic analysis
Voltage
Power
Frequency
Phase rotation
186
Trip cause
LT
LT
ST
dST forward
dST reverse
INST
GF residual
GF direct
GF UREF
GF UREF
Reverse power
Trip cause
Current Unbalance voltage
Voltage Unbalance current
THD current Over THD current
THD voltage Over THD voltage
Undervoltage Undervoltage
Overvoltage Overvoltage
Power forward Power forward
Power reverse Power reverse
Underfrequency Underfrequency
Overfrequency Overfrequency
Phase rotation
Measured value
1 2 3
I I I
L1 L2 L3
I I I
L1 L2 L3
I I I
L1 L2 L3
I I I
L1 L2 L3
I I I
L1 L2 L3
I I I
L1 L2 L3
I I I
L1 L2 L3
I I I
L1 L2 L3
I I I
L1 L2 L3
I I I
L1 L2 L3
P P P
L1 L2 L3
Measured value
1 2 3
I I I
L1 L2 L3
U U U
1N 2N 3N
I I I
L1 L2 L3
U U U
1N 2N 3N
U U U
1N 2N 3N
U U U
1N 2N 3N
P P P
L1 L2 L3
P P P
L1 L2 L3
U U U
1N 2N 3N
U U U
1N 2N 3N
Phase sequence=
{L1L2L3 , L3L2L1}
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
4 5
I --
LN
I --
LN
I --
LN
I --
LN
I --
LN
I --
LN
I I
LN g
I I
LN g
I I
LN g
I I
LN g
-- --
4 5
I I
LN nb
U --
nb
I THD I
LN
THD U --
-- --
-- --
-- --
-- --
f --
f --
-- --