ABB Emax DC L3447 Installation And Service Instructions Manual

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ABB Emax DC L3447 Installation And Service Instructions Manual Manual pdf 16 page image

L3447 Emax DC14/108L3728Doc. No.Model Apparatus ScalePage No.1SDH000635R00026. Putting into service6.1 General procedures– Check tightness of the power connections at the circuit-breaker terminals– Carry out all the preparatory operations on the release– Make sure that the value of the auxiliary circuit power supply voltage is between 85 and 110% of the rated voltage of the electrical applications– Make sure that there is an adequate air circulation in the place of installation to avoid overheating– Also carry out the checks specified in the following table.Item inspected1 Manual operating mechanism2 Geared motor (if any)3 Undervoltage release(if any)4 Shunt opening release (if any)5 Shunt closing release (if any)6 Circuit-breaker lock in the open position(with key or padlocks)7 Auxiliary contacts of the circuit-breaker8 Auxiliary contacts for signalling circuit-breaker connected, test isolated anddisconnected9 Lock devices for circuit-breakersconnected and disconnected. Interlockingdevices between circuit-breakers side byside and one on top of another (if any)10 For withdrawable circuit-breakers: racking-in/out deviceProcedureCarry out some opening and closing operations(see the chapter 7.2).CAUTIONWhen there is an undervoltage release, thecircuit-breaker can only be closed after therelease has been electrically energized.Supply the spring loading geared motor at thecorresponding rated voltage.Carry out some closing and openingoperations.Note. Supply the undervoltage release at thecorresponding rated voltage (if any).Supply the undervoltage release at thecorresponding rated voltage and carry out thecircuit-breaker closing operation.Disconnect voltage to the release.Supply the undervoltage release at thecorresponding rated voltage and carry out thecircuit-breaker closing operation.Close the circuit-breaker.Supply the shunt opening release at thecorresponding rated voltage.Open the circuit-breaker.Supply the shunt closing release at its ratedvoltage.Open the circuit-breaker, turn the key andremove it from its seat. Attempt circuit-breakerclosing operation.Insert the auxiliary contacts in suitable signallingcircuits. Carry out some circuit-breaker closingand opening operations.Insert the auxiliary contacts in suitable signallingcircuits. Then put the circuit-breaker in theconnected, test isolated and disconnectedposition.Carry out the operating tests.Carry out some racking-in and out operations.Positive checkThe spring loading lever moves correctly.The springs are loaded correctly.The signals are correct.The geared motor stops with the springsloaded.The geared motor reloads the springs aftereach closing operation.The circuit-breaker closes correctly. The signalsare correct.The circuit-breaker opens. The signal changesover.The circuit-breaker opens correctly. Thesignals are correct.The circuit-breaker closes correctly. The signalsare correct.Both manual and electrical closing areprevented.The signals are given correctly.The signals due to the relative operations aregiven correctly.The locks function correctly.Racking-in operation: the circuit-breaker racksin correctly. The first turns of the crank handledo not meet with particular resistance.