Rtc: Ready To Close Signalling Contact - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions
Low voltage air circuit-breakers
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RTC: ready to close signalling
contact
45
46
48
RTC
80 | © 2014 ABB | 1SDH000999R0002 - L8569
The RTC contact indicates that the circuit-breaker is ready to receive a close command.
The conditions necessary to allow the closing of the circuit-breaker are:
• circuit-breaker open
• springs loaded
• absence of an opening command or a lock in opening
NOTE: if the circuit-breaker is opened due to the tripping of the Ekip protection release, in
order to allow closing, the Reset signal of the circuit-breaker must have been reset (press
the TU Reset key on the front panel).
The RTC contact is of the "switched" type and is available in a standard version or in the versions for digital
signals.
The following table provides information on the electrical characteristics:
Characteristics
24V
125V
DC
Breaking
250V
capacity
AC
125V - 250V
Minimum load
RTC: Connections
Further information is available on page 58, or on the site http://www.abb.com/abblibrary/DownloadCenter/,
where the wiring diagram is available 1SDM000091R0001.
Diagram 71
Information on the assembly is available from the web site http://www.abb.com/abblibrary/DownloadCenter/,
in particular with the kit sheet 1SDH000999R0604.
Standard
-
0.3A @ 0ms
0.15A @ 10ms
0.3A @ 0ms
0.15A @ 10ms
1A cos φ 0,3
2A cos φ 0,7
3A cos φ 1
50mA @ 24V
71
A4
X
46
48
XV
46
48
XB6
2
3
A1
RTC
XB6
1
XV
45
X
45
A4
Electrical accessories | 2 - Electrical signalling accessories
ABB | SACE Emax 2
Digital signals
0.1 A
-
-
-
-
-
-
-
1mA @ 5V
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