Yu: Under-Voltage Coil - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions

YU: under-voltage coil

D1
D2
YU
YO2
74 | © 2014 ABB | 1SDH000999R0002 - L8569
The under-voltage coil YU controls the value of the voltage in the circuit to which it is connected.
The coil opens the circuit-breaker when:
• the power supply voltage of the coil drops to a value in the range 35... 70 %Un
The under-voltage coil YU can in addition be used for the following purposes:
• Release the circuit-breaker remotely using push-buttons of the normally closed type.
• Activate the lock when the circuit-breaker is closed (the closing of the circuit-breaker is allowed only with
the under-voltage coil energized).
IMPORTANT:
• The under-voltage coil YU is incompatible with the presence of the Fail Safe device
(UL circuit-breakers).
• The under-voltage coil YU is a emergency release. For service operations use the
opening coil.
NOTE: the power supply of the coil must drawn on the supply side of the circuit-breaker or
from an independent source.
If the under-voltage coil trips, it is necessary, after having reset it, to wait at least 100 ms
before operating the closing coil.
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
YU: 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 73
Information on the assembly is available from the web site http://www.abb.com/abblibrary/DownloadCenter/,
in particular with the kit sheet 1SDH000999R0504.
General characteristics
Operating limits
Inrush power (Ps)
Continuous power (Pc)
Opening time
73
+
~
A4
SO
X
D1
XV D1
A1
XB5 1
YU
XB5 2
XV
D2
X D2
-
A4
~
Electrical accessories | 1 - Electrical control accessories
ABB | SACE Emax 2
YU
35...70 %Un
300 VA/W
3,5 VA/W
50 ms