Measured Values Of The Etus Of The 3-Series - Siemens SENTRON 3WL10 Series Manual

Description
2.4 Electronic trip unit ETU
Software-based parameterization
The ETUs of the 6-series can be parameterized and commissioned manually on the display,
or in an efficient, clear, and error-avoiding manner with the freely available powerconfig
software.
Settings can be stored and are thus reproducible at any time.
Note
powerconfig 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 powerconfig software (https://support.industry.siemens.com/cs/ww/en/view/63452759) is
freely available.
2.4.4

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
Currents (rms value)
Reference standard: Class 1 acc. to
IEC 61557-12
Ground fault current
Measuring interval memory of the individual parameters for each interval with a time stamp
Current: smallest and largest
Information for tripping and switch-off data
stored in ETU with or without auxiliary power supply after a fault
Type of protection function tripped
Fault values per phase
Time stamp
64
Measured value
A I I , I , neutral
1, 2 3
A I
g
Measured value
A I , I
min max
Measured value
e.g. L, S, I, G
A e.g. L1, L2, L3, N
Date, time, and consecutive number
Measuring accuracy Reference standard
1 % Class 1 acc. to
IEC 61557-12
2 % —
Clocking Monitoring period
Fixed or synchroniza- Duration: 5 to 120 min
ble via test device
Number of intervals:
24
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01