ABB SACE Emax Instructions For Installation And Service page 32

9. Measures to be taken for any operating anomalies
The power supply to the TEST bushes (15V dc) of the SACE PR111 release does not open the
circuit-breaker
Pressure on the TEST pushbutton of the SACE PR112 release does not make the circuit-
breaker open
Intervention of the µ P Fault indication on the SACE PR112 release
Lighting up of the WARNING or EMERGENCY LED on the SACE PR112 release
Release coils interrupted or burnt out, gearmotor winding interrupted
The shunt opening or closing release does not energise sufficiently
The shunt opening or closing release remains energised
The moving part does not rack into the fixed part
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Mod. M4379
Rev.
The moving part does not rack out of the fixed part
The circuit-breaker does not close
The circuit-breaker does not open
Possible causes
XO connector not connected correctly
Coil of the YO1 shunt opening release interrupted
Fault in the electronic circuits of the microprocessor-based
release
The possible causes for intervention are listed in part B of
the manual
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Protections not recovered
Control or consent contacts locked in closure
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Power supply voltage of the auxiliary circuits too low
Power supply voltage different from the one indicated on the
rating plate of these releases
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Switching circuit faulty
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Wire tightening screws loose
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Incorrect electrical connections in the power supply circuit
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Release coils interrupted
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Operating mechanism blocked
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Key not inserted in the operating mechanism Key lock
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Circuit-breaker in intermediate position between connected
and withdrawn
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Undervoltage release not energised
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Shunt opening release remains energised
Racking-in or racking-out operation not carried out correctly
Checks and solutions
Check and position connector XO correctly
Replace the YO1 shunt opening release
Put the circuit-breaker out of service and check the release with
the testing apparatus
Intervene in relation to the cause: in particular, if contact wear
exceeds 80% (WARNING LED on), the circuit-breaker can
remain in service but replacement of the breaking parts must
be programmed within a short time. If contact wear reaches
100%, the circuit-breaker must be put out of service immedi-
ately. For replacement operations of the breaking parts, ask
ABB SACE.
Press the mechanical pushbutton for signalling protection
intervention
Check the state of the contacts in series with the release circuit
Measure the voltage: it must not be less than 85% of the rated
voltage
Check the rating plate voltage of the releases
Check connections, fuses, interlocks, protection circuit-break-
ers and consent contacts
Check tightening of the screws which connect the wires
Check the connections with the relative key diagram
Replace the coils
Operate manually; if the fault persists, ask ABB SACE
Insert the key and turn it
Complete the operation
Check the relative power supply circuit
Check the power supply circuit
See paragraph 7.3
Aparato
SACE Emax
Apparatus
N° Doc.
601933/003
Doc. No.
Anomalies
Escala
Scale
N° Pag.
Sh. No.
30/100