Siemens SENTRON 3WL10 - Page 86

Description
2.8 Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
84 Manual, 10/2018, L1V30499596002-01
Metering functions of the ETUs of the 6-series
Sampling rate
Hz
1200-2400-4800-9600
—
Max. recording duration s 16 —
Recording stop delay
s
0 to 10
—
Number of registers No. 2 independent —
Information on tripping and switch-off data
Parameter
Metering module
MF required
Type of protection function tripped e.g. L, S, I, G, V
o
, V
u
(can also be queried via info button
when ETU is unpowered)
—
Fault values per phase A / V /
Hz w /
VAR
e.g.
L1, L2, L3, N
U12, U23, U31 for V
o
, V
u
—
Time stamp
Date, time, and consecutive number
—
Maintenance displays
Parameter
Metering module
MF required
Information on the last 30 trips
Type of protection function, fault values, and time stamp
—
Information on the last 200 events
Type of event, time stamp
—
Number of mechanical switching
operations
1)
No. Can be assigned to alarm —
Total number of trips No. — —
Operating hours counter
h
—
—
Contact wear % Pre-alarm > 80%
Alarm = 100%
—
Date of maintenance performed
Last
—
Direction to perform necessary
maintenance
— —
Key data
Type of circuit breaker, assigned name, serial number
—
Self-diagnostics
Parameter
Metering module
MF required
Watchdog: constant CT monitoring,
monitoring of the electronics and
tripping coil
Alarm due to
disconnection
Current sensor,
sensors, tripping
coil
Note:
Tripping of the circuit breaker can be
set in the case of an alarm
—
Temperature (T) Pre-alarm and
alarm due to
overheating
—
1)
After a fault with or without auxiliary power supply
2)
After a fault without auxiliary power supply
3)
If auxiliary power supply is connected
4)
Available in the SIOS Portal, see below