Siemens SENTRON 3VA27 - Electronic Trip Units of the 6-Series

Description
2.8 Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
53
Operating elements (ETUs of the 3-series)
The electronic trip units of the 3-series are equipped with rotary coding and DIP switches.
● DIP switches: Setting the neutral protection and the line frequency
● Rotary coding switch: Parameterizing the protection functions
● Test and info button: Enables test tripping in conjunction with a test device or with
another power source. Also display of the last reason for tripping after a fault by lighting
up the LED for this purpose.
This is enabled by a button cell inside the ETU without any external power supply.
2.8.3.2
Electronic trip units of the 6-series
①
Active LED ACT
②
Warning displays
③
Operating keys, including test and info button
④
Connection socket for test devices TD310, TD410, and TD420
⑤
Display (LCD)
Operation of the menu functions is described in Chapter Entering parameters (Page 197).
See also
Menu structure of the ETUs of the 6-series (Page 272)
Alarms (Page 203)