Accessories
4.11 Test devices
3VA molded case circuit breakers with IEC certificate
520 Manual, 03/2019, A5E03603177010-03
Example: Testing the tripping function L on an ETU550 LSI
1. Connect the TD500 test device to the 3VA2 molded case circuit breaker.
2. Switch on the 3VA2 molded case circuit breaker.
3. Press pushbutton <L> on the TD500 test device.
The LED in the pushbutton <L> starts to flash.
4. Wait until the LED in the pushbutton <L> changes from flashing to steady illumination.
The test is completed.
5. Evaluate the test result by the status of the LED labeled "RESULT":
LED "RESULT" is
illuminated steadily in green: The test was successful
.
LED "RESULT" flashes
red: The test was unsuccessful
and must be repeated
If the test
fails again, contact
Technical Support (Page 10) .
6. Press the pushbutton <L> again in order to confirm the test result and restore the TD500
to its initial state.
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