Siemens SENTRON 3WL10 - Metering Functions

Settings can be stored and are thus reproducible at any time.
Note
powercon󹪝g is commissioning and maintenance software for all communication-capable
SENTRON products from Siemens. With this software, the circuit breaker can be parameterized
and commissioned and its settings can be archived and, in the operating phase, values from the
plant (current, voltage, etc.) can be read out and the status of the circuit breaker can be acquired.
The powercon󹪝g (https://support.industry.siemens.com/cs/ww/en/view/63452759) software is
freely available.
2.9.5.1 Metering functions
Measured values of the ETUs of the 3-series
The electronic trip units of the 3-series save a range of measured values that are based
exclusively on status changes and current signals. In addition to the visual display of
maintenance signals, trip reasons, overload measurements, etc. indicated by LEDs on the ETU,
a number of measured values such as trip history or maintenance information can be read out
on the ETUs of the 3-series, too, via the TD410/420 test devices on the front interface of the ETU.
Measured values of the ETUs of the 3-series
Instantaneous values
 Measured value Measuring accuracy Reference standard
Currents (rms value)
Reference standard: Class 1 acc. to IEC
61557-12
A I
1,
I
2
, I
3
, neutral 1%
Fixed lower current
transmission limit
=3%I
n
Class 1 acc. to
IEC61557‑12
Ground-fault current A I
g
2% —
Measuring interval memory of the individual parameters for each interval with a time stamp
 Measured value Clocking Monitoring period
Current: smallest and largest A I
min
, I
max
Fixed or synchroniza‐
ble via test device
Duration: 5 to 120 min
Number of intervals:
24
Information for tripping and switch-o󹪜 data
stored in ETU with or without auxiliary power supply after a fault
 Measured value
Type of protection function tripped  e.g. L, S, I, G - via LED display and info button and powercon󹪝g
Fault values per phase A e.g. L1, L2, L3, N
Time stamp  Date, time, and consecutive number
Maintenance displays
 Parameter
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 opera‐
tions
1)
No. Can be assigned to alarm
Description
2.9Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
76 Equipment Manual, 10/2023, L1V30499596002-03