ABB | SACE Emax 2
Putting into service and maintenance
4 - E2.2, E4.2 and E6.2 second level maintenance
281 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
Inspection of the protection
trip unit
Check that the trip unit is in good condition:
1. Power the protection trip unit with an Ekip TT battery unit.
2. Check the correct operation of the protection trip unit: tripping test with "Trip Test" and "Autotest".
3. With a Ekip Dip verify the absence of alarms through frontal LEDs.
4. With a Ekip Touch, verify the absence of alarms via the display and the front LEDs.
5. Make sure that the cables are correctly connected to the modules and to the trip unit (if applicable).
6. On a Ekip Touch check the percentage of wear on the contacts of the circuit-breaker.
7. Finally, remove the Ekip TT battery unit.
Test with Ekip Connect
Test the trip unit:
1. Connect the Ekip Bluetooth or Ekip T & P unit to the trip unit.
2. Connect the computer where the program is installed by means of a Bluetooth or USB connection.
3. After connecting the computer and trip unit, check that there are no alarm signals. Otherwise, refer
to the paragraph " 1 - Identification of alarms or failures" on page 285.
4. In the absence of alarms you can proceed to the trip test and self test (depending on the type
of trip unit). For future checks it is recommended to insert the current date in the area called
"Information". These data will be stored within the trip unit itself.
5. Remove the Ekip Bluetooth or Ekip T & P unit from the trip unit.
Final checks
Reassemble and check the circuit-breaker:
1. Reassemble all the parts by performing all the operations indicated in the paragraph “Disassembly
Operations” in reverse order and, if necessary, reconnect the auxiliary power supply.
2. Put the movable part (breakers) in the test position (see indication TEST).
3. Perform the following operations 10 times:
• Opening (in both local and remote modes, if applicable)
• Closing (in both local and remote modes, if applicable)
• Tripping via Trip Test
4. Perform the operations in the following sequence:
• Open - Springs discharged
• Open - Springs charged
• Closed - Springs discharged
• Closed - Springs charged
5. Check that the following operate correctly:
• accessories, if provided.
• gearmotor, if provided.
• undervoltage coil, if provided.
• opening coil, if provided.
• closing coil, if provided.
• auxiliary contacts of the circuit-breaker, if provided.
• lock for circuit-breaker in open position (key or padlock), if provided
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