Siemens SENTRON 3WL10 - TD420 Test Device

3.6.4 TD420 test device
The TD420 test device has the functionality of the TD410 with added test and storage options.
It can be used with all electronic trip units of the 3- and 6-series.
Function scope:
• Activation of the ETU
• Trip tests performed in the same ways as for the TD310
• Gateway between PC and ETU
• Parameterization of the ETU with the powercon󹪝g software (see below)
• Trip testing using the powercon󹪝g software
• Generation of a report of the parameters set on the ETU with the powerservice software.
• Testing of the basic protection functions LSING with the powerservice software
• Testing of the enhanced protection functions with the powerservice software
• Test data storage with the powerservice software
• Extended test functionality:
This is for checking the parameter settings of the ETU and comparing them with
standardized, typical applications and network circumstances. In this way, the behavior of
the circuit breaker during operation can be forecast and analyzed to prevent undesired false
tripping (supporting teach-in).
• Electronic trip units of the 6-series:
If an ETU of the 6-series trips, the continuously recording bu󹪜er memory and therefore the
high-resolution current curve can be read out before and after this event using the test
device. The triggers for freezing this memory include not only trip reasons but also various
other thresholds, alarms, and events that can be selected user-speci󹪝cally.
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Accessories
3.6Breaker Data Adapters and test devices
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
126 Equipment Manual, 10/2023, L1V30499596002-03