ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions page 163

159 | © 2013 ABB | 1SDH001000R0002 - L7804
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
A4
to the circuit-breaker
BUS1 Serial interface with the external bus
Electronic time-delay device of the under-voltage coil YU, external to the
D
circuit-breaker
F1 Time-delayed trip fuse
Input for zone selectivity for protection G or input in "inverse" direction for
GZi(DBi)
protection D
Output for zone selectivity for protection G or output in "inverse" direction
GZo(DBo)
for protection 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 /
Optional auxiliary power supply module (24-48Vdc and 110-220Vac / dc)
SUPPLY
K51 /
Synchronization module
SYNC
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
Auxiliary contacts of the circuit-breaker
/ 27
RC RC protection sensor (residual current)
RT1...RT3 Temperature sensors
RTC EKIP Auxiliary contact ready to close the circuit-breaker
RTC Contact for signalling circuit-breaker ready to close
S33M /
Spring loading motor limit contacts
1...2
S43 Switch for setting remote/local control
S51 Opening signalling contact
S75E / Contacts for signalling circuit-breaker in disconnected position (only with
1...4 withdrawable circuit-breakers)
Contacts for signalling circuit-breaker in connected position (only with
S75I / 1...5
withdrawable circuit-breakers)
S75T / Contacts for signalling circuit-breaker in test position (only with
1...2 withdrawable circuit-breakers)
SC Push-button or contact for closing the circuit-breaker
SO Push-button or contact for immediate opening of the circuit-breaker
Push-button or contact for opening the circuit-breaker with time-delayed
SO1
trip
ABB | SACE Emax 2
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Accessories | 2 - Wiring diagrams