ABB Sace Emax 2 Installation, Operation And Maintenance Instructions For The Installer And The User page 59
Low voltage air circuit-breakers
Hide thumbs
Also See for Sace Emax 2:
Table of Contents
Advertisement
Circuit-breaker life The circuit-breakers SACE Emax 2, with or without opening or closing coils, can withstand the following
Maintenance schedule Proper maintenance of the equipment allows good electromechanical operation to be maintained over
57 | © 2022 ABB | 1SDH000999R0002 - ECN000232533
operating cycles if regularly serviced. For further information see chapter 4 - Environmental conditions
on page 20.
Interrup-
ted rated
circuit-
current
breaker IEC
60947
Iu (40°C) [A]
</= 1000
1250
E1.2
1600
1250 L
Interrup-
ted rated
circuit-
current
breaker UL
1066
Iu (40°C) [A]
</= 800
E1.2-A
1200
time.
The maintenance plan for SACE Emax 2 circuit-breakers specifies the maintenance frequency for the
different types of site conditions.
We include the table indicating the frequency with which maintenance should be carried out and the
relative routine maintenance operations required.
Activity
Maintenance (see the
paragraph 4)
Lubrication of jaw-type
isolating contacts of
withdrawable circuit-
breaker (see the
paragraph 5)
Only for 900V and 1150V circuit-breakers Operating sequences/hour = 10.
(1)
Keep track of the number of racking in and out operations or make an estimate on the basis of
(2)
the average number of racking out operations to ensure that the jaw-type isolating contacts are
cleaned and lubricated correctly.
Compliance with the following rules is also recommended:
• Even circuit-breakers that operate infrequently or that remain closed or open for long periods of
time must be subjected to programmed maintenance.
• All the circuit-breakers provide information on the number of operations performed in the presence
of auxiliary power supply of the Trip Unit. With Ekip Dip trip units, the information can be obtained
with the aid of Ekip T&P and a PC on which the Ekip Connect software is installed. With Ekip Touch
trip units, the information is available at any time on the appropriate display. With Ekip Dip trip
units, installation of the mechanical operation counter is recommended (supplied on request).
• During the service, visually inspect the circuit-breaker from the outside to check for the presence
of dust, dirt or damage.
Mechanical life with
regular maintenance
No. of
Frequency of
operations
operations/
(x 1000)
hour
20
60
20
60
20
60
20
60
Mechanical life with
regular maintenance
No. of
Frequency of
operations
operations/
(x 1000)
hour
20
60
20
60
Frequency in standard envi-
ronments
(1)
One year or 2000 operations or
after tripping due to short circuit
100 racking-in and racking-out
operations
or three years
(2)
Putting into service and maintenance | 3 - Maintenance
ABB | SACE Emax 2
Electrical life
440V AC
690V AC
No. of
No. of
operations
operations
(x 1000)
(x 1000)
8
8
8
6.5
8
6.5
3
1
Electrical life
508V AC
635V AC
No. of
No. of
operations
operations
(x 1000)
(x 1000)
8
8
7
6.5
Frequency in dusty envi-
ronments (dust level measured
> 1mg/m
)
3
6 months or 1000 operations or
after tripping due to short circuit
50 racking-in and racking-out
operations
or 18 months
(2)
Frequency of
operations/
hour
30
30
30
30
Frequency of
operations/
hour
30
30
Advertisement
Table of Contents
