ABB | SACE Emax 2
Accessories | 2 - Circuit diagrams
59 | © 2017
ABB |
1SDH000999R0002 - ECN000058721 - Rev. B
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 located on the mobile part of the circuit-breaker
A3
Applications located on the fixed part of the circuit-breaker
A4
Indicative device and connections for control and signalling, outside the circuit-breaker
BUS1
Serial interface with external bus
D
Electronic time-lag device of YU undervoltage coil, outside the circuit-breaker
F1
Time-delayed trip fuse
GZi(DBi)
Zone Selectivity input for G protection or input in “reverse” direction for D protection
GZo(DBo)
Zone Selectivity output for G protection or output in “reverse” direction for D protection
I O1…32
Programmable digital inputs
K51
Overcurrent protection solid-state trip unit
K51 / COM
Communication module
K51 / FAN
Fan power supply module
K51 / MEAS
Measurement module
K51 / SIGN
Signalling module
K51 / SUPPLY Auxiliary supply module (24-48Vdc and 110-240Vac/dc)
K51 / SYNC
Synchronization module
K51 / YC
Closing control from the Ekip protection trip unit
K51 / YO
Opening control from the Ekip protection trip unit
M
Motor for loading closing springs
M2
Fan motor
O 01...32
Programmable signalling contacts
O SC
Contact for synchronism control
Q
Circuit-breaker
Q / 1...Q / 27 Auxiliary open/closed contacts of the circuit-breaker
Rc
Rc sensor
RT1…RT3
Temperature sensors
RTC EKIP
Auxiliary ready to close contact of the circuit-breaker, used internally by the trip unit
RTC
Contact for signalling circuit-breaker is ready to close
S33M / 1…2
Limit contacts of spring loading motor
S43
Switch for presetting remote/local control
S51
Trip signalling contact
S75E / 1…4
Contacts for signalling circuit-breaker in racked-out position (provided only with
withdrawable version)
S75I / 1…5
Contacts for signalling circuit-breaker in racked-in position (provided only with
withdrawable version)
S75T / 1…2
Contacts for signalling circuit-breaker in test position (provided only with withdrawable
version)
SC
Pushbutton or contact for closing the circuit-breaker
SO
Pushbutton or contact for immediate opening of the circuit-breaker
SO1
Pushbutton or contact for opening the circuit-breaker with time-delayed trip
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