Maintenance; Safety Standards; Skilled Personnel; Circuit-Breaker Life - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions
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3 - Maintenance
Safety standards The following are the warnings to be respected during the maintenance operations
Skilled personnel The maintenance operations must be carried out by Skilled Personnel:
Circuit-breaker life The circuit-breakers SACE Emax 2, with or without opening or closing coils, can withstand the following
44 | © 2021 ABB | 1SDH002083A1002 - ECN000119014 - Rev. A
HAZARD! RISK OF ELECTRIC SHOCK! Risk of electric shock or accident.
WARNING! before proceeding with any maintenance operation, it is mandatory to:
• Set the circuit-breaker to the open position and make sure that the springs of the
operating mechanism are discharged.
• In the case of a withdrawable circuit-breaker, extract the circuit-breaker from the fixed
part (see the indication DISCONNECTED)
• If work must be performed on fixed circuit-breakers or on fixed parts, disconnect
the power supply to the power circuit and auxiliary circuits and visibly ground the
terminals on both the supply side and load side.
• Use adequate personal protection equipment, ensure that the apparatus is in a safe
condition and proceed in accordance with the Laws in force.
skilled person, in the electrical field (IEV 195-04-01): person with sufficient training and experience to enable
him or her to perceive risks and avoid the dangers potentially created by electricity).
ABB declines all liability for damage to persons or property caused by failure to comply with the instructions
in this document.
operating cycles if regularly serviced. For further information see chapter 4 - Environmental conditions on
page 25.
No. opera-
IEC 60947-3
tions x 1000
1600
15
2000
15
2500
15
3200
15
4000
15
UL 489B
No. operations x
UL 489F
1000
1600
15
2000
15
2500
15
3200
15
(*)
See note of table 7.1.5.1 UL 489
Frequency of
No. operations x 1000
operations/
tau=2 ms
hour
20
10
20
8
20
5
10
3
10
2
No. operations x
Frequency of
1000
operations/hour
tau=3 ms
20
10
20
8
20
7
10
3
Putting into service and maintenance | 3 - Maintenance
ABB | SACE Emax 2
Frequency of
operations/
tau=7.5 ms
hour
5
20
4
20
2,5
20
1,5
10
1
10
Frequency of
operations/hour
60
60
60
60 (*)
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