ABB SACE Emax 2 Installation, Operation And Maintenance Instructions page 60

58 | © 2014 ABB | 1SDH000999R0002 - L8569
Continued from the previous page
The following is a key to the symbols used in the wiring diagrams:
Symbol Description
* See the note indicated by the letter
A1 Applications applied to the moving part of the circuit-breaker
A3 Applications applied to the fixed part of the circuit-breaker
Indicative equipment and connections for operating and signalling, external to the
A4
circuit-breaker
BUS1 Serial interface with the external bus
D Electronic time-delay device of the under-voltage coil YU, external to the circuit-breaker
F1 Time-delayed trip fuse
GZi(DBi) Input for Zone Selectivity for protection G or input in "inverse" direction for protection D
Output for Zone Selectivity for protection G or output in "inverse" direction for protection
GZo(DBo)
D
I O1...32 Programmable digital inputs of the Ekip protection release
K51 Overcurrent protection solid-state release
K51 / COM Communication module
K51 / FAN Fan power supply module
K51 / MEAS Measurement module
K51 / SIGN Signalling module
K51 / SUPPLY Optional auxiliary power supply module (24-48Vdc and 110-220Vac / dc)
K51 / SYNC Synchronization module
K51 / YC Closing command via Ekip protection release
K51 / YO Opening command via Ekip protection release
M Motor for loading the closing springs
M2 Fan motor
O 01...32 Programmable signalling contacts of the Ekip protection release
O SC Contact of the Ekip protection release for synchronism control
Q Circuit breaker
Q / 1...Q / 27 Auxiliary contacts of the circuit-breaker
Rc Rc sensor
RT1...RT3 Temperature sensors
RTC EKIP Auxiliary contact ready to close the circuit-breaker
RTC Contact for signalling circuit-breaker ready to close
S33M / 1...2 Spring loading motor limit contacts
S43 Switch for setting remote/local control
S51 Opening signalling contact
Contacts for signalling circuit-breaker in disconnected position (only with withdrawable
S75E / 1...4
circuit-breakers)
Contacts for signalling circuit-breaker in connected position (only with withdrawable
S75I / 1...5
circuit-breakers)
Contacts for signalling circuit-breaker in test position (only with withdrawable
S75T / 1...2
circuit-breakers)
SC Push-button or contact for closing the circuit-breaker
SO Push-button or contact for immediate opening of the circuit-breaker
SO1 Push-button or contact for opening the circuit-breaker with time-delayed trip
ABB | SACE Emax 2
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Accessories | 2 - Wiring diagrams