ABB SACE Emax 2 Installation, Operation And Maintenance Instructions page 38

36 | © 2021 ABB | 1SDH002083A1002 - ECN000119014 - Rev. A
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The following is a key to the symbols used in the wiring diagrams:
Symbol Description
* See the note indicated by the letter
A1 Applications on movable part of switch-disconnector
A3 Applications on fixed part of switch-disconnector
Indicative operating and signaling devices and connections outside
A4
switch-disconnector
D Electronic time delay device of undervoltage coil YU, outside switch-disconnector
M Motor for loading closing springs
Q Switch-disconnector
Q / 1...Q / 25 Open/close auxiliary contacts of switch-disconnector
RTC Contact for signaling switch-disconnector ready to close
S33M / 1...2 Limit contacts of spring loading motor
SC Pushbutton or contact for closing of switch-disconnector
SO Pushbutton or contact for immediate opening of switch-disconnector
SO1 Pushbutton or contact for opening switch-disconnector with delayed trip
X Delivery connector for auxiliary circuits of withdrawable switch-disconnector
XB1...XB6 Connectors for circuit-breaker applications
XV Delivery terminal box for auxiliary circuits of fixed switch-disconnector
YC Closing coil
YC2 Second closing coil
YO Opening coil
YO2 Second opening coil
YU Undervoltage coil
The following is a key to the notes used in the wiring diagrams:
Note Description
When there are mixed auxiliary contacts, Q1 and Q2 are 400 V, while Q3 and Q4 are
A)
24 V. Then Q5, Q6, Q7 are 400 V, while Q8, Q9, Q10 are 24 V.
B) Always supplied with motor for loading the closing springs in Fig.13.
ABB | SACE Emax 2
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Accessories | 2 - Wiring diagrams