Emax Low voltage air circuit-breakers - ABB Download Center

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Switching and protection of capacitorsOperating conditions of circuit-breakersduring continuous service for capacitorbanksAccording to the IEC 60831-1 and 60931-1 Standards, capacitorsmust be able to operate in service conditions with arated rms current of up to 1.3 times the rated current Icn ofthe capacitor. This prescription is due to the possible presenceof harmonics in the mains voltage.It should also be kept in mind that a tolerance of +15% isadmissible for the capacitance value corresponding to itsrated power, so that the circuit-breakers for switching capacitorbanks must be selected to permanently carry a maximumcurrent equal to:ln = 1.3 x 1.15 x lnc = 1.5 x lnc.Current for connecting capacitor banksConnection of a capacitor bank can be compared to a closingoperation under short-circuit conditions, where the transientmaking capacity Ip takes on high peak values, above all whencapacitor banks are connected in parallel with others that arealready powered. The value of Ip needs to be calculated foreach individual situation because it depends on the individualcircuit conditions and can in certain cases even have a peakvalue equal to 100-200 x Icn for a duration of 1-2 ms.This fact must be taken into account when selecting the circuitbreaker,which must have a suitable making capacity, and whensetting the overcurrent release, which must not cause unwantedtrips when the bank is connected.Selecting the circuit-breakerUsing the information on the rating plate of the three-phasecapacitor bankQn = rated power in kvarUn = rated voltage in Vthe rated current of the capacitor bank is determined as follows:6Inc =Qn x 10 3, in A.3 x UnThe following conditions must be verified for the circuit-breaker:Rated current ln > 1.5 lncOverload protection setting l1 = 1.5 x lncShort-circuit protection setting l3 = OFFBreaking capacity lcu > Ik, at the point of installation.ABB SACE 6/41
Switching and protection of capacitorsTable for selecting the protection andswitching circuit-breakers for capacitorsThe breaking capacity of the circuit-breaker must take into accountthe prospective short-circuit current at the point of installation.The available sizes are shown in the table.Rated current Rated current Overload Short-circuitMaximum power of the capacitor of the current of the capacitor protection protectionbank at 50Hz [kvar] Circuit-breaker transformer bank setting setting400V 440V 500V 690V Type In [A] Inc [A] I1 [A] I3 [A]578 636 722 997 E1 - E2 - E3 1250 834 1 x In OFF739 813 924 1275 E1 - E2 - E3 1600 1067 1 x In OFF924 1017 1155 1594 E2 - E3 2000 1334 1 x In OFF1155 1270 1444 1992 E3 2500 1667 1 x In OFF1478 1626 1848 2550 E3 - E4 - E6 3200 2134 1 x In OFFNoteThe E2L and E2L circuit-breakers are not suitable for switching capacitor banks.66/42ABB SACE
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Main characteristicsRangesInstallat
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The new Emax range shines like a li
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Careful selection of materials, met
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Overview of the SACE Emax familyFie
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Construction characteristicsStructu
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Construction characteristicsOperati
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Construction characteristicsUtiliza
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Electronic trip unitsGeneral charac
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Electronic trip unitsVersions avail
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Compliance with StandardsStandards,
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The RangesContentsSACE Emax automat
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1SDC200078F00011SDC200079F00011SDC2
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Switch-disconnectors1SDC200060F0001
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Switch-disconnectors for applicatio
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Sectionalizing truckSectionalizing
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Earthing truckOther versionsEarthin
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Installation in switchgearModular d
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Installation in switchgearChoosing
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Installation in switchgearCurrent-c
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Changing the rated uninterrupted cu
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Changing the rated uninterrupted cu
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Derating at different altitudesSACE
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Current-limiting and specific let-t
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Overcurrent releases andrelated acc
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Operation and protection functionsP
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Versions availableThe following ver
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Functions L-I1SDC200100F00014Functi
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Protection trip units and trip curv
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Zone 3 Zone 2 Zone 1Phase unbalance
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Example of events indicated by the
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Measurement functionThe current mea
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Additional Protection functions and
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Functions L-S-It = k1SDC200111F0001
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Function Gt =kI 2t = k1SDC200112F00
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Function RVRV1SDC200125F00014Functi
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Notes:(1) In accordance also with I
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Protection functions and setting va
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Functions L-S-It =kI 21SDC200110F00
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Function LAccording to IEC 60225-3k
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Function UVUV1SDC200123F00014Functi
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Accessories for protection trip uni
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1SDC200129F0001SACE PR010/T configu
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• SD030 AO: the device acquires d
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Circuit-breakers with communication
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Measurement, signalling and availab
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Complete control of the installatio
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AccessoriesContentsFunctions of the
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Accessories supplied as standardThe
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Switch-disconnectorsSwitch-disconne
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1SDC200135F00011b) SOR Test UnitThe
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1SDC200138F00012b) Time-delay devic
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Signal for overcurrent releases tri
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1SDC200147F00015c) Electrical signa
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Transformers and operation counters
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Page 122 and 123: Interlock between circuit-breakers1
Page 124 and 125: The emergency power supply is usual
Page 126 and 127: ATS021ATS022GeneralAuxiliary Power
Page 130 and 131: Applications of thecircuit-breakerC
Page 132 and 133: To guarantee selectivity for Emax c
Page 134 and 135: Double SThanks to the new PR123 tri
Page 136 and 137: Solution with the PR123 trip unit w
Page 138 and 139: The figure at the side showsthe tim
Page 140 and 141: To carry out the cabling, a shielde
Page 142 and 143: Primary and secondary distributionB
Page 144 and 145: By assuming some numerical values f
Page 146 and 147: Direction (OUT-IN)Bw ➞ BwBw ➞ F
Page 148 and 149: Direction (OUT-IN)Fw ➞ FwFw ➞ B
Page 150 and 151: Example of selection of earth fault
Page 152 and 153: With the same configuration, a faul
Page 154 and 155: Using the SACE RCQ switchboardelect
Page 156 and 157: MV-LV substation with multipletrans
Page 158 and 159: Switching and protection of transfo
Page 160 and 161: Example:In an installation with Un=
Page 162 and 163: Table for selecting circuit-breaker
Page 164 and 165: Switching and protection of asynchr
Page 166 and 167: WarningThe curves of the motor and
Page 168 and 169: This protection can be carried out
Page 172: ABB SACE 6/436
Page 175 and 176: Overall dimensionsFixed circuit-bre
Page 181 and 182: Overall dimensionsWithdrawable circ
Page 189 and 190: 1000 max1000 maxOverall dimensionsC
Page 191 and 192: Overall dimensionsCircuit-breaker a
Page 193 and 194: Overall dimensionsCircuit-breaker a
Page 196 and 197: Circuit diagramsContentsReading inf
Page 198 and 199: M = Motor for charging the closing
Page 200 and 201: NotesA) The circuit-breaker is only
Page 202 and 203: Circuit diagramsCircuit diagram sym
Page 204 and 205: Circuit diagramsElectrical accessor
Page 206 and 207: Auxiliary circuits of the PR121, PR
Page 208 and 209: HMI030(*) Connect 5 and 6 terminals
Page 210 and 211: WITH SAFETY AUXILIARY VOLTAGE SUPPL
Page 214 and 215: Ordering codesContentsGeneral infor
Page 216 and 217: Ordering codesSACE Emax automatic c
Page 218 and 219: 1SDC200259F0001PR121/P PR122/P PR12
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1SDC200259F0001PR121/P PR122/P PR12
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1SDC200259F0001PR121/P PR122/P PR12
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1SDC200260F0001PR121/P PR122/P PR12
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1SDC200260F0001PR121/P PR122/P PR12
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1SDC200260F0001PR121/P PR122/P PR12
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1SDC200260F0001PR121/P PR122/P PR12
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1SDC200261F0001PR121/P PR122/P PR12
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1SDC200262F0001PR121/P PR122/P PR12
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Ordering codesSACE Emax automatic c
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Ordering codesSACE Emax switch-disc
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1SDC200259F00011SDA......R13 Poles
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1SDC200260F00011SDA......R13 Poles
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1SDC200260F00011SDA......R13 Poles
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1SDC200262F00011SDA......R13 Poles
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1SDC200264F00011SDA......R14 PolesE
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1SDC200260F00011SDA......R1E3H/E 12
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1SDC200260F00011SDA......R13 Poles
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1SDC200260F00011SDA......R13 Poles
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1SDC200262F00011SDA......R13 Poles
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Ordering codesSACE Emax MTP earthin
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Ordering codesSACE Emax FP fixed pa
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Ordering codesConversion kit for fi
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Ordering codesSACE Emax accessories
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1SDA.....R1Electrical signalling of
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1SDA.....R1Circuit-breaker lock in
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1SDA.....R1Auxiliary unitsAutomatic
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Ordering codesElectronic trip units
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2) MechanicalinterlocksInstructions
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Contact usABB SACEA division of ABB
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