ABB | SACE Emax 2
72 | © 2014 ABB | 1SDH000999R0002 - L8569
Electrical accessories | 1 - Electrical control accessories
Electrical accessories
1 - Electrical control accessories
YO-YC-YO2: Opening and
closing coil
YO
YC
YU
YO2
C12
C13
C11
C2
C3
C1
D2
D1
The opening coils, YO and YO2, and the closing coil, YC, allow the circuit-breaker to be controlled remotely.
The opening of the circuit-breaker is always possible with the circuit-breaker closed, while closing is possible
with the circuit-breaker open and the closing springs loaded.
The opening and closing coils can operate in two different modes:
instantaneous service (the minimum duration of the command impulse must be 100ms).
service with permanent power supply.
IMPORTANT:
• In the case of permanent power supply, if the closing coil trips it is necessary, after
opening, to momentarily de-energize the coil in order to be able to re-use it for the
subsequent closing.
• If instead the opening coil trips, it is necessary, after having de-energized it, to wait at
least 100 ms before operating the closing coil.
NOTE: the second opening coil YO2 is alternative to the under-voltage coil YU.
Available voltages and characteristics
The tables listing the available voltages and the electrical characteristics are provided below:
Available voltages (Un)
24 V AC/DC
30 V AC/DC
48 V AC/DC
60 V AC/DC
110…120 V AC/DC
220…240 V AC/DC
240...250 V AC/DC
277 V AC/DC
380…400 V AC
415…440 V AC
480…500 V AC
500…550 V AC
General characteristics YO-YO2 YC
Operating limits 70%...110% Un 85%...110% Un
Inrush power (Ps) AC= 300VA DC= 300W
Continuous power (Pc) AC= 3.5VA DC= 3.5W
Opening time 35ms -
Closing time - 50ms
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