SENTRON 3WA air circuit breakers
Made for makers. Simply reliable.
Software-supported testing
Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – Protective function principle (functional chain)
3WA air circuit breakers
ACB Function Blocks


Function direction



How we do this test today
with the 3WL?
ETU
L1
3WL9111-0AT44-0AA0
Protective
L2
L3
Function testing unit
Analog
Digital
List price 28.700,00 €
F5
Primary Protective Functions
Secondary injection test
Main Contacts
Secondary injection test
1 Transformer
2 Analog-Digital converter
3 Protective functions
4 Tripping solenoid F5
5 Mechanic and main contacts
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Hand held tester
3WL9111-0AT32-0AA0
List price 2.600,00 €
CT test & simple test function
Software-supported testing
3WA air circuit breakers
Software-supported testing
for Primary Protective Functions
LT / ST / INST / N or GF
SENTRON powerconfig
version 3.22 or higher
3WA firmware 2.2.0 or higher
Extended Breaker Test
• Basic Version for free
• Software license “Standard”
for Test report and more
functions for one year
(7KN2720-0CE00-1YC1)
Software guided and failsafe
Without assembly work
Connection via USB-C
Protection settings from the breaker
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing
3WA air circuit breakers
Test principle
The principle of software-assisted testing is that the SENTRON
powerconfig configuration software transmits a test signal (current
and/or voltage) to the ETU600 electronic trip unit via the USB-C
interface. The test signal is generated individually according to the
current circuit breaker protection settings and the selected test
function (LT, ST INST, N, GF, etc.).
The ETU600 treats the test signal like an actual current measured
via the current sensors and behaves as specified by the set
protection parameters. The protection function of the ETU600 is not
in test mode, nor is the protection behavior affected. This allows you
to check the real protection and system behavior and also detect
incorrect protection settings.
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing
3WA air circuit breakers
ACB Function Blocks


Function direction



ETU
L1
Test = passed
Analog
✓ ETU self-monitoring (1 -3)
Protective
L2
Digital
L3
✓ ETU-Tripping (4)
F5
✓ Tripping-time in tolerance (3)
✓ Main contacts open (4 – 5)
Test report
Main Contacts
Precondition
current < 100 A
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Test signal
The test signal corresponds one-to-one to the actually
measured signal (sample rate) coming from the analogto-digital converter. The test signal can be formed for
up to nine measuring inputs. The test signal is
generated individually by the SENTRON powerconfig
configuration software on the basis of the current
protection settings of the 3WA air circuit breaker and
the desired trip.
Software-supported testing
3WA air circuit breakers
ACB Function Blocks


Function direction



ETU
L1
Analog
Protective
L2
Digital
L3
Primary Protective Functions
F5
Main Contacts
The monitoring function constantly checks the
current sensors, the analog-to-digital converter,
and the electronic components of the protection
function. Errors are detected and reported
immediately. The fault-free operation of these
components can therefore always be detected and
ensured.
1 Transformer
2 Analog-Digital converter
3 Protective functions
4 Tripping solenoid F5
5 Mechanic and main contacts
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The set protection parameters and their
correctness and the mechanical part of the circuit
breaker (see points (4 - 5) are not checked by the
self-monitoring function. This is where softwareassisted testing comes in, which together with selfmonitoring can test the entire functional chain.
Software-supported testing – Protective function principle (functional chain)
3WA air circuit breakers
Three levels of testing
Self-monitoring of the ETU
(watchdogs)
Simple Trip-test in the ETU
(Trip command)
Extended Breaker Test of the tripping curve for
LT, ST, INST, N or GF with Test-report
(Test current samples)
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
SENTRON powerconfig version 3.22 or higher
Put a 3WA from the library to the project
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Go to the communication cockpit
Connect the Breaker via USB-C ands select USB
as gateway
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
You can make a ping to test the connection
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Go the Extended Breaker Test cockpit
The Extended Breaker Test is offline
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Go online.
Powerconfig will load the current breaker settings.
These setting are the base form the Test.
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
This message will come if the breaker are different
to the data in the project. Please select yes.
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
The extended Breaker Test is online
Now its possible to select a Curve-Test
Protection setting of the connected Breaker
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
A Test current is selected and the Test can begin
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
You have to confirm that the main contacts are
closed, if no BSS200 is available. If a BSS200 is
available, the status of the main contacts is known
and no query will appear
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
The Test can now start
ETU-display during the Test
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Please confirm the status of the main contacts
after the Test
ETU-display during the Test
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Test results are transferred
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Test results overview
ETU-display during the Test
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
You can save the Test results in the project
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Software-supported testing – step by step
3WA air circuit breakers
A detailed Test-Report is available.
You can print this report or save the report as PDF
if the software license Standard is active
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Upgrade for Basic to Standard
For the upgrade is the Automation License
Manager needed. Link
SENTRON powerconfig License
7KN2720-0CE00-1YC1
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
For the upgrade is the Automation License
Manager needed. Link
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Test license type Standard
With the License Standard its possible to select a
specific test current
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
Standard
With the License Standard its possible to to
print a detailed Test-Report
Page 26
Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Software-supported testing – step by step
3WA air circuit breakers
With the License Standard its possible to
print a detailed Test-Report
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Unrestricted | © Siemens 2022 | SI EP | 08.12.2022
Contact
Published by Siemens AG
Smart Infrastructure
Electrical Products
siemens.com/3wa
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