68
• Test button
Turn on the trip Unit (push one of push buttons)
Get the reset button in position MAN
- Push the test button for more than 2 seconds
- Verify the breaker trip and appear on display “FAULT Test”
- Verify the “reset button” is came out
- Verify is not possible to switch on the breaker
- Check the trip contact: check continuity between terminals (51-54) (procedure AUX-II)
- Push the “reset button”
- Close the breaker
- Verify disappear the indication “FAULT Test”
4.12
TSD - Functional test with Test device
It is possible get a more detailed check by using a specific test device:
- Complete reading of Protection Unit
- Check of trip curve
- check of mechanical efficiency of mechanism (main contacts opening and closing time )
- report concerning tests done
For further information contact BTicino