Td420 Test Device - Siemens SENTRON 3WL10 Manual

Accessories
3.6 Breaker Data Adapters and test devices
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 powerconfig software (see below)
● Trip testing using the powerconfig 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 buffer 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-specifically.
For this expanded functionality, the powerservice software will be available for
downloading as of 2018.
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3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01