SACE Emax DC: Direct Current Applications - VAE ProSys sro

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Protection Releases and Trip CurvesPR123/DCCharacteristicsThe PR123/DC is the new electronic protection release for the SACE Emax DC serie; the completerange of protection functions together with the wide combination of thresholds and trip times offeredmake it suitable for protecting a wide range of direct current installation.The PR123/DC offers the following protection functions:• overload (L)• selective short-circuit (S)• thermal memory for L and S (cable protection)• instantaneous short-circuit (I)• earth fault with adjustable delay (G)• poles unbalance (U)• overtemperature protection (OT)• load control (K)• undervoltage (UV)• overvoltage (OV)• reverse power (RP)• dual setting• zone selectivity for S, G• start-up thresholds for protection S and I12ABB SACE
Protection functions and setting values - PR123Function Trip Threshold Trip Time Can be Relation Thermal Zonethreshold steps Time Step excluded t=f(I) memory selectivityUOTUVOVRPOverloadWith current I = 3xI1protection I1= 0.4….1 x In 0.01 x In t1= 3 s....102 s 3 s (1) – IEC60255-8 ■ –Tolerance (2) Release between ± 10% If ≤ 6 x In.05 and 1.2 x I ± 20% If > 6 x InI1= 0.4….1 x In 0.01 x In With current I = 3xI1 (4) ; t1= 3 s....144 s 3 s – t=k(α) (5)Tolerance Release between ± 20% If > 5 x I1 α = 0.2-1-2.05 ... 1.2 x I1 ± 30% 2xI1≤ If ≤ 5 x I1Selective short-circuitWith current I > I2protection I2= 0.6….10 x In 0.1 x In t2= 0.05 s….0.8 s 0.01 s ■ t=k – ■t2sel= 0.04 s…..0.2 s0,01 sTolerance (2) ± 7% If ≤ 6 x In The better of the two figures:± 10% If > 6 x In ± 10% or ± 40 msI2= 0.6….10 x In 0.1 x In With current I = 10xIn; t2= 0.05 s…0.8 s 0.01 s ■ t=k/I 2 ■ –Tolerance (2) ± 7% If ≤ 6 x In ± 15% If ≤ 6 x In± 10% If > 6 x In ± 20% If > 6 x InSelective short-circuitWith current I > I2protection I2= 0.6….10 x In 0.1 x In t2= 0.05 s….0.8 s 0.01 s ■ t=k – ■Tolerance (2) ± 7% If ≤ 6 x In The better of the two figures:± 10% If > 6 x In ± 10% or ± 40 msInstantaneousshort-circuitprotection I3= 1.5….10 x In 0.1 x In Instantaneous – ■ t=k – –Tolerance (2) ± 10% ≤ 30 msEarth faultWith current I > I4protection I4 (6) = 0.2….1 x In 0.02 x In t4= 0.1 s…..1 s 0.05 s ■ t=k – ■t4sel= 0.04 s…..0.2 s0,01 sTolerance (2)The better of the two figures:± 7% ± 10% or ± 40 msI4= 0.2….1 x In 0.02 x In t4= 0.1 s…..1 s (with I=4xI4) 0.05 s ■ t=k/I 2 – –Tolerance (2) ± 7% ± 15%Phase unbalance I6= 5%….90% 5% t6= 0.5 s…..60 s 0.5 s ■ t=k – –protectionThe better of the two figures:Tolerance (2) ± 10% ± 20% or ± 100 msProtection againstovertemperature cannot be set – Instantaneous – – temp=k – –Undervoltage I8= 0.5….0.95 x Un 0.01 x In With current U < U8; t8= 0,1 s….5 s 0.1 s ■ t=k – –protectionThe better of the two figures:Tolerance (2) ± 5% ± 20% or ± 40 msOvervoltage I9= 1.05….1.2 x Un 0.01 x In With current U > U9; t9= 0,1 s….5 s 0.1 s ■ t=k – –protectionThe better of the two figures:Tolerance (2) ± 5% ± 20% or ± 40 msReverseWith current P < P11power P11= -0.3….-0.1 x Pn 0.02 Pn t11= 0.5 s…..25 s 0.1 s ■ t=k – –protectionThe better of the two figures:Tolerance (2) ± 10% ± 10% or ± 100 ms(1) The minimum trip value is 1 s, regardless of the type of curve set (self-protection)(2) These tolerances hold in the following conditions:- self-powered relay at full power and/or auxiliary power supply (without start-up)- trip time set ≥ 100 ms(3) Non intervention timeThe following tolerance values apply in all cases not covered by the above:Trip thresholdTrip timeL Release between 1.05 and 1.25 x I1 ± 20%S ± 10% ± 20%I ± 15% ≤ 60msG ± 15% ± 20%Others ± 20%ABB SACE 13
Page 1: Annex to the technical catalogueEma
Page 4 and 5: SACE Emax DC automatic circuit-brea
Page 6 and 7: SACE Emax DC: Direct Current Applic
Page 8 and 9: SACE Emax DC: Direct Current Applic
Page 10 and 11: Protection Releases and trip Curves
Page 12 and 13: Protection Releases and trip Curves
Page 16 and 17: Protection Releases and Trip Curves
Page 26 and 27: Overall dimensionsFixed circuit-bre
Page 28 and 29: Overall dimensionsFixed circuit-bre
Page 30 and 31: Overall dimensionsWithdrawable circ
Page 32 and 33: Overall dimensionsWithdrawable circ
Page 34 and 35: Overall dimensionsCircuit-breaker a
Page 36 and 37: Circuit diagramsReading information
Page 38 and 39: Circuit diagramsCircuit diagram sym
Page 40 and 41: Circuit diagramsCircuit-breakersMot
Page 42 and 43: Circuit diagramsCircuit-breakersAux
Page 44 and 45: Ordering codesSACE Emax DC automati
Page 46 and 47: Ordering codesSACE Emax DC automati
Page 48: Ordering codesSACE Emax FP fixed pa

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