Medium-voltage current transformers - Mbs-ag.com
Medium-voltage current transformers - Mbs-ag.com
Medium-voltage current transformers - Mbs-ag.com
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<strong>Medium</strong>-<strong>volt<strong>ag</strong>e</strong> <strong>transformers</strong>We make energy measurable and take care of your futurewww.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGP<strong>ag</strong>e 2MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGContentsCurrent <strong>transformers</strong> – Technical characteristics From p<strong>ag</strong>e 4<strong>Medium</strong>-<strong>volt<strong>ag</strong>e</strong> <strong>current</strong> <strong>transformers</strong> for indoor us<strong>ag</strong>e From p<strong>ag</strong>e 8Support type <strong>current</strong> transformer7.2 kV; 12 kV; 17.5 kV P<strong>ag</strong>e 8Narrow type according DIN 42600, part 8Support type <strong>current</strong> transformer, primary switchable7.2 kV; 12 kV; 17.5 kV P<strong>ag</strong>e 10Narrow type according DIN 42600, part 8Support type <strong>current</strong> transformer7,2 kV; 12 kV; 17.5 kV P<strong>ag</strong>e 12Support type <strong>current</strong> transformer24 kV P<strong>ag</strong>e 14Narrow type according DIN 42600, part 8Split-core <strong>current</strong> transformer, fully resin hardened for indoor applicationsSplit-core <strong>current</strong> transformer0.72 kV / 1.2 kVP<strong>ag</strong>e 16Tube <strong>current</strong> transformer, fully resin hardened for indoor applicationsSingle-piece tube <strong>current</strong> transformer0.72 kV / 1.2 kVP<strong>ag</strong>e 18Single-piece tube <strong>current</strong> transformer0.72 kV P<strong>ag</strong>e 20Single- and double pole insulated medium-<strong>volt<strong>ag</strong>e</strong> <strong>volt<strong>ag</strong>e</strong> <strong>transformers</strong> for indoor applicationsVolt<strong>ag</strong>e <strong>transformers</strong>7.2 kV; 12 kV; 17.5 kV; 24 kVNarrow, small and large type acc. DIN 42600-9; resp. part 7 or 3P<strong>ag</strong>e 22MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 3
MBS AGCurrent <strong>transformers</strong> – Technical characteristicsCurrent <strong>transformers</strong> are special <strong>transformers</strong> for the proportional transformation of high <strong>current</strong>s into directlymeasurable values. Their construction and physical operating principle enables a galvanic separation of theprimary circuit from the measured circuit, thereby providing a protection for sequentially connected instrumentsin the event of a fault.Primary nominal <strong>current</strong>Secondary nominal<strong>current</strong>Actual transformationrationBurdenRated burdenRated powerNominal frequencyAccuracy classPhase displacementerror [Δφ]Current error(Transmission error)Value of the primary <strong>current</strong>, that characterises the <strong>current</strong> transformer and for which itis designed.Value of the secondary <strong>current</strong>, that characterises the <strong>current</strong> transformer and for whichit is designed.Is the ratio of the primary nominal <strong>current</strong> to the secondary nominal <strong>current</strong>. It isspecified as an unabridged break on the rating plate.The impedance of the secondary <strong>current</strong> is declared in ohms and power factor. Theburden is usually expressed as the apparent power in volt-amperes, absorbed at aspecified power factor and at the rated secondary <strong>current</strong>.The value of the burden upon which the accurate requirements of this specification arebased.The value of the apparent power (in a VA specified power factor), which the <strong>current</strong>transformer is intended to supply to the secondary circuit and rated burden at the ratedsecondary <strong>current</strong>.Value of the frequency, on which the calculation of the <strong>current</strong> transformer is based.The denotation for a <strong>current</strong> transformer whose measuring deviation remains below theprescribed operating condition.Signifies the phase shift of the primary <strong>current</strong> and the secondary <strong>current</strong>. The directionof the indicator is arranged in such a way, that with an optimum produced <strong>current</strong>transformer the phase displacement error is equal to zero.The phase displacement error is to be regarded as positive when the indicator of thesecondary <strong>current</strong> is ahead <strong>com</strong>pared to the indicator of the primary <strong>current</strong>.The phase displacement error is specified in minutes or hundredths of a radiant.Note: Strictly speaking this definition is only valid for sinus type <strong>current</strong>s.Is the percent<strong>ag</strong>e deviation of the nominal transmission multiplied by the secondary<strong>current</strong> from that of the primary <strong>current</strong>. The <strong>current</strong> error is calculated positively,should the actual value of the secondary <strong>current</strong> exceed the nominal value.F i = Current error in %K n = Rated measuring ratioI p = Primary <strong>current</strong> in A (effective value)= Secondary <strong>current</strong> in A (effective value)I sMax. <strong>volt<strong>ag</strong>e</strong> for electricalequipment U mThis denotes the highest constant permitted value for phase to phase <strong>volt<strong>ag</strong>e</strong> for whichthe <strong>current</strong> <strong>transformers</strong> isolation is rated.P<strong>ag</strong>e 4MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGTotal measuring deviationIs the effective value in stationary position, and the difference between:a) The momentary value of the primary <strong>current</strong> andb) The momentary value of the measuring transmission of the multiplied actualsecondary <strong>current</strong>, whereby the positive indicators of the primary and secondary<strong>current</strong> correspond to the accord for the connection denotation.The total measuring deviation F g is generally rendered in the percent<strong>ag</strong>es of theeffective value of the primary <strong>current</strong>, as per the following mathematical equation:K n = Rated measuring transmissionI p = Effective value of the primary <strong>current</strong>i p = Momentary value of the primary <strong>current</strong>i s = Momentary value of the secondary <strong>current</strong>T = Duration of periodRated limit <strong>current</strong> [I pl ]Over-<strong>current</strong> rated limitingfactor (FS)Thermal rated continuousrated <strong>current</strong> [I cth ]Thermal rated short-time<strong>current</strong> [I th ]Rated surge <strong>current</strong> [I dyn ],,Open circuit <strong>volt<strong>ag</strong>e</strong>“ of<strong>current</strong> <strong>transformers</strong>Earthing of secondaryterminalsValue of the lowest primary <strong>current</strong> where, by the secondary measuring burden, thetotal deviation of the <strong>current</strong> transformer for measuring purposes is equal to or greaterthan 10%.Is the ratio of the limit rated <strong>current</strong> to the primary rated <strong>current</strong>.Is the primary <strong>current</strong> which allows the continuous operation of the <strong>current</strong> transformer.When using this <strong>current</strong> value, the temperature of the secondary wiring must notexceed the prescribed values mentioned in the actual technical norms. This value is indirect relation to the isolation material class.This value indicates the effective value of the primary <strong>current</strong> which the <strong>current</strong><strong>transformers</strong> can withstand with short circuited secondary winding.Other rated measuring values as 1s, e.g. 0.5s, 2s and 3s are acceptable. The thermalshort time rated <strong>current</strong> I th has to be stated for each <strong>current</strong> transformer.Peak value of the primary <strong>current</strong>, whose electro-mechanical impact is resisted by the<strong>current</strong> transformer with short circuited secondary winding.Current <strong>transformers</strong>, which are not directly encumbered with a burden, have tobe generally secondarily short circuited!A secondary open <strong>current</strong> transformer operates like a loaded one with an almostinfinitely high burden. The curve shape of the secondary <strong>current</strong> is extremely deformedand under certain conditions <strong>volt<strong>ag</strong>e</strong> surges occur up to several kilovolts, which can beharmful to human beings. The amount of the induced “loss motion” depends on thecore cross-section and the number of secondary turns.According to DIN VDE 0141 (01/2000), section 5.3.4, <strong>current</strong>- and <strong>volt<strong>ag</strong>e</strong> <strong>transformers</strong>have to be secondarily earthed, starting from U m = 3.6 kV.The design of the earthing connections are mandatory up from series 10N.MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 5
MBS AGError limits for measuring <strong>transformers</strong> for classes 0.2…3 according toDIN EN 61869, part 1 + 2 (former DIN EN 60044-1)Current error ± F byPhase displacement error ± F byAccuracy class1.2 I n1.0 I n0.5 I n 0.2 I n 0.05 I n 0.01 I n1.2 I n1.0 I n0.5 I n 0.2 I n 0.05 I n 0.01 I n% % % % % min min min min min0.2S 0.2 0.2 0.35 0.75 10 10 15 300.2 0.2 0.35 0.75 10 15 300.5S 0.5 0.5 0.75 1.5 30 30 45 900.5 0.5 0.75 1.5 30 45 901 1 1.5 3 60 90 1803 3 3Error limit values for <strong>current</strong> <strong>transformers</strong> for protection applicationsCurrent error ± F i byPhase displacement error ± F i byAccuracy class1.0 I n1.0 I nand thermal nominal continuous <strong>current</strong> and thermal nominal continuous <strong>current</strong>% min5 P … 1 6010 P … 3Current error F g at nominal error <strong>current</strong> limit and nominal burden Class 5P … ≤ 5 %Class 10P … ≤ 10 %Partial dischargesPartial discharge requirements are valid for instrument <strong>transformers</strong> with U m ≥ 7.2 kV.Partial discharge test <strong>volt<strong>ag</strong>e</strong>s and permissible levelsType of system earthingPartial discharge test <strong>volt<strong>ag</strong>e</strong>(Effective value)kVPermissible partial discharge level 2)pCType of insulationliquid insulationsolid insulationStar point grounded 1)(Earth fault ≤ 1.5)Star point isolated or noteffectively grounded 1)(Earth fault > 1.5)U m1.2 U m / √31.2 U m1.2 U m / √31) If the type of system earthing is not mentioned, the values for the isolated or not effectively grounded star point arehas to be taken.2) The permissible partial discharge levels are also applicable for frequencies deviating from the nominal ratedfrequency.10510550205020P<strong>ag</strong>e 6MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGMarkings of the <strong>current</strong> <strong>transformers</strong> connection terminalsThe connections of all primary windings are marked with capital letters „P1“ and „P2“. The connections of all secondarywindings are marked with the corresponding lower case letters „s1“ and „s2“.Power requirements of measuring setupsTwo main requirements are cited by the user for the principle demands of <strong>current</strong> <strong>transformers</strong>:- a high degree of measuring precision in the range of the nominal <strong>current</strong>- a protection function in the over-load rangeIn order to fulfil these demands it is necessary for the assumed nominal power of a <strong>current</strong> transformer to fully achieve theactual power requirements of the prescribed measurements.In ascertaining the actual power requirements, consideration is to be given to the power losses of the appliances to beconnected, as well as to the losses of the measuring conductor.The actual power consumption of the connected devices can be found in the respective data sheets.Please note:If the power requirement of the measuring setup is substantially less than the power supply of the <strong>current</strong>transformer, the CT loses his protective function in over-<strong>current</strong> ranges.In some cases this can lead to a dam<strong>ag</strong>e of the connected devices.Power consumption of copper wiresI s = Secondary nominal <strong>current</strong> [A]I = Distance in mA cu = Wire cross section in mm²P v = Power loss of the measuring conductorComment: With a joint three phase <strong>current</strong> return conductor the values of P v are halved.Chart for values referring to 5 ANominal cross section 1 m 2 m 3 m 4 m 5 m 6 m 7 m 8 m 9 m 10 m2.5 mm² 0.36 0.71 1.07 1.43 1.78 2.14 2.50 2.86 3.21 3.574.0 mm² 0.22 0.45 0.67 0.89 1.12 1.34 1.56 1.79 2.01 2.246.0 mm² 0.15 0.30 0.45 0.60 0.74 0.89 1.04 1.19 1.34 1.4910.0 mm² 0.09 0.18 0.27 0.36 0.44 0.54 0.63 0.71 0.80 0.89Chart for values referring to 1 ANominal cross section 10 m 20 m 30 m 40 m 50 m 60 m 70 m 80 m 90 m 100 m1.0 mm² 0.36 0.71 1.07 1.43 1.78 2.14 2.50 2.86 3.21 3.572.5 mm² 0.14 0.29 0.43 0.57 0.72 0.86 1.00 1.14 1.29 1.434.0 mm² 0.09 0.18 0.27 0.36 0.45 0.54 0.63 0.71 0.80 0.896.0 mm² 0.06 0.12 0.18 0.24 0.30 0.36 0.42 0.48 0.54 0.6010.0 mm² 0.04 0.07 0.11 0.14 0.18 0.21 0.25 0.29 0.32 0.36MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 7
MBS AGSupport type <strong>current</strong> <strong>transformers</strong> for indoor application7.2 kV, 12 kV and 17.5 kV – Narrow type according to DIN 42600, part 8Description:<strong>Medium</strong>-<strong>volt<strong>ag</strong>e</strong> <strong>current</strong> <strong>transformers</strong> for indoor application, which are converting multiple primary <strong>current</strong>s proportional andin-phase into measurable and standardized secondary <strong>current</strong>s.These <strong>transformers</strong> are fully resin-hardened in polyurethane and are serving apart of their main function as a <strong>current</strong> transformeras well as a bus bar support.These CTs are both applicable for measuring as well as for protection purposes. When ordering the selection has to be made.The medium-<strong>volt<strong>ag</strong>e</strong> <strong>current</strong> <strong>transformers</strong> are also available as multicore <strong>current</strong> <strong>transformers</strong>. The maximum quantity of coresdepends on the chosen burden and accuracy class.Technical data:CTS7.2M11 CTS12M11 CTS17.5M11Max. operating <strong>volt<strong>ag</strong>e</strong> U m: 7.2 kV 12 kV 17.5 kVPower frequency <strong>volt<strong>ag</strong>e</strong>: 20 kV 28 kV 38 kVLightning impulse <strong>volt<strong>ag</strong>e</strong>: 60 kV 75 kV 95 kVTherm. nominal continuous rated<strong>current</strong> I cth:1.2 x I N 1.2 x I N 1.2 x I NTherm. rated short-time <strong>current</strong> I th: 31.5 kA, 1 sec. 31.5 kA, 1 sec. 31.5 kA, 1 sec.Rated surge <strong>current</strong> I dyn: 2.5 x I th 2.5 x I th 2.5 x I thPrimary nominal <strong>current</strong>: 25 A – 2500 A 25 A – 2500 A 25 A – 2500 ASecondary nominal <strong>current</strong>: 5 A or 1 A 5 A or 1 A 5 A or 1 ANominal frequency: 50 / 60 Hz 50 / 60 Hz 50 / 60 HzMeasuring CT accuracy classes: 1; 0.5; 0.5S; 0.2; 0.2S 1; 0.5; 0.5S; 0.2; 0.2S 1; 0.5; 0.5S; 0.2; 0.2SProtection CT accuracy classes:5P5; 5P10; 5P20; 5P30; 5P5; 5P10; 5P20; 5P30; 5P5; 5P10; 5P20; 5P30;10P5; 10P10; 10P20; 10P30 10P5; 10P10; 10P20; 10P30 10P5; 10P10; 10P20; 10P30Insulation class: E E ECantilever strength: 5000 Nm 5000 Nm 5000 NmWeight: approx. 22 kg approx. 22 kg approx. 22 kgSubject to technical modifications without noticePlease note, that the above mentioned data are standard values. Other values on request.P<strong>ag</strong>e 8MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGDrawings:Legende:1 Cast resin housingPrimary connection M12x23, screws M12x25 (Please note: The primary connection is also available with a hole spacing of 40mm instead2of 32mm.)3 Rating plate4 Danger sign5 Transparent terminal cover6 Cable gland PG16 (Please note: On request the cable gland is also available with thread M20x1.5)7 Max. 6 secondary terminals M5x10, screws M5x128 Secondary earthing screws , red, M5x159 Fixing screws of terminal cover (sealable only when calibration is required)10 Base plate11 Earthing connection screw M8x16MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 9
MBS AGPrimary switchable support type <strong>current</strong> <strong>transformers</strong> for indoor application7.2 kV, 12 kV and 17.5 kV – Narrow type according to DIN 42600, part 8Description:<strong>Medium</strong>-<strong>volt<strong>ag</strong>e</strong> <strong>transformers</strong> for indoor application, which are converting multiple primary <strong>current</strong>s proportional and in-phaseinto measurable and standardized secondary <strong>current</strong>s.These <strong>transformers</strong> are fully resin-hardened in polyurethane and are serving apart of their main function as a <strong>current</strong> transformeras well as a bus bar support.These CTs are both applicable for measuring as well as for protection purposes. When ordering the selection has to be made.The medium-<strong>volt<strong>ag</strong>e</strong> <strong>current</strong> <strong>transformers</strong> are also available as multicore <strong>current</strong> <strong>transformers</strong>. The maximum quantity of coresdepends on the chosen burden and accuracy class.With the <strong>current</strong> <strong>transformers</strong>, which are primary switchable you have the possiblity to chose two different primary nominal<strong>current</strong>s. The selection can be made depending on the connection, if connected in parralel or series.The primary nominal <strong>current</strong>s can only be realized in transmission 1:2.Technical data:CTS7.2M11U CTS12M11U CTS17.5M11UMax. operating <strong>volt<strong>ag</strong>e</strong> U m: 7.2 kV 12 kV 17.5 kVPower frequency <strong>volt<strong>ag</strong>e</strong>: 20 kV 28 kV 38 kVLightning impulse <strong>volt<strong>ag</strong>e</strong>: 60 kV 75 kV 95 kVTherm. nominal continuous rated<strong>current</strong> I cth:1.2 x I N 1.2 x I N 1.2 x I NTherm. rated short-time <strong>current</strong> I th: 31.5 kA, 1 sec. 31.5 kA, 1 sec. 31.5 kA, 1 sec.Rated surge <strong>current</strong> I dyn: 2,5 x I th 2,5 x I th 2,5 x I thPrimary nominal <strong>current</strong>: 25-50 A – 600-1200 A 25-50 A – 600-1200 A 25-50 A – 600-1200 ASecondary nominal <strong>current</strong>: 5 A or 1 A 5 A or 1 A 5 A or 1 ANominal frequency: 50 / 60 Hz 50 / 60 Hz 50 / 60 HzMeasuring CT accuracy classes: 1; 0.5; 0.5S; 0.2; 0.2S 1; 0.5; 0.5S; 0.2; 0.2S 1; 0.5; 0.5S; 0.2; 0.2SProtection CT accuracy classes:5P5; 5P10; 5P20; 5P30; 5P5; 5P10; 5P20; 5P30; 5P5; 5P10; 5P20; 5P30;10P5; 10P10; 10P20; 10P30 10P5; 10P10; 10P20; 10P30 10P5; 10P10; 10P20; 10P30Insulation class: E E ECantilever strength: 5000 Nm 5000 Nm 5000 NmWeight: approx. 22 kg approx. 22 kg approx. 22 kgSubject to technical modifications without noticePlease note, that the above mentioned data are standard values. Other values on request.P<strong>ag</strong>e 10MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGDrawings:Terminal assignment:Key:1 Cast resin housingPrimary connection M12x23, screws M12x25 (Please note: The primary connection is also available with a hole spacing of 40mm instead2of 32mm.)3 Primary re-connection4 Rating plate5 Danger sign6 Transparent terminal cover7 Cable gland PG16 (Please note: On request the cable gland is also available with thread M20x1.5)8 Max. 6 secondary terminals M5x10, screws M5x129 Secondary earthing screws , red, M5x1510 Fixing screws of terminal cover (sealable only when calibration is required)11 Base plate12 Earthing connection screw M8x16MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 11
MBS AGSupport type <strong>current</strong> <strong>transformers</strong> for indoor application7.2 kV, 12 kV and 17.5 kVDescription:<strong>Medium</strong>-<strong>volt<strong>ag</strong>e</strong> <strong>transformers</strong> for indoor application, which are converting multiple primary <strong>current</strong>s proportional and in-phaseinto measurable and standardized secondary <strong>current</strong>s.These <strong>transformers</strong> are fully resin-hardened in polyurethane and are serving apart of their main function as a <strong>current</strong> transformeras well as a bus bar support.These CTs are both applicable for measuring as well as for protection purposes. When ordering the selection has to be made.The medium-<strong>volt<strong>ag</strong>e</strong> <strong>current</strong> <strong>transformers</strong> are also available as multicore <strong>current</strong> <strong>transformers</strong>. The maximum quantity of coresdepends on the chosen burden and accuracy class.Technical data:CTS7.2M12 CTS12M12 CTS17.5M12Max. operating <strong>volt<strong>ag</strong>e</strong> U m: 7.2 kV 12 kV 17.5 kVPower frequency <strong>volt<strong>ag</strong>e</strong>: 20 kV 28 kV 38 kVLightning impulse <strong>volt<strong>ag</strong>e</strong>: 60 kV 75 kV 95 kVTherm. nominal continuous rated<strong>current</strong> I cth:1,2 x I N 1,2 x I N 1,2 x I NTherm. rated short-time <strong>current</strong> I th: 31.5 kA, 1 sec. 31.5 kA, 1 sec. 31.5 kA, 1 sec.Rated surge <strong>current</strong> I dyn: 2.5 x I th 2.5 x I th 2.5 x I thPrimary nominal <strong>current</strong>: ≥1500 A – 3000 A ≥1500 A – 3000 A ≥1500 A – 3000 ASecondary nominal <strong>current</strong>: 5 A or 1 A 5 A or 1 A 5 A or 1 ANominal frequency: 50 / 60 Hz 50 / 60 Hz 50 / 60 HzMeasuring CT accuracy classes: 1; 0.5; 0.5S; 0.2; 0.2S 1; 0.5; 0.5S; 0.2; 0.2S 1; 0.5; 0.5S; 0.2; 0.2SProtection CT accuracy classes:5P5; 5P10; 5P20; 5P30; 5P5; 5P10; 5P20; 5P30; 5P5; 5P10; 5P20; 5P30;10P5; 10P10; 10P20; 10P30 10P5; 10P10; 10P20; 10P30 10P5; 10P10; 10P20; 10P30Insulation class: E E ECantilever strength: 5000 Nm 5000 Nm 5000 NmWeight: approx. 25 kg approx. 25 kg approx. 25 kgSubject to technical modifications without noticePlease note, that the above mentioned data are standard values. Other values on request.P<strong>ag</strong>e 12MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGDrawings:Legende:1 Cast resin housingPrimary connection M12x23, screws M12x25 (Please note: The primary connection is also available with a hole spacing of 40mm instead2of 32mm.)3 Rating plate4 Danger sign5 Transparent terminal cover6 Cable gland PG16 (Please note: On request the cable gland is also available with thread M20x1.5)7 Max. 6 secondary terminals M5x10, screws M5x128 Secondary earthing screws , red, M5x159 Fixing screws of terminal cover (sealable only when calibration is required)10 Base plate11 Earthing connection screw M8x16MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 13
MBS AGSupport type <strong>current</strong> <strong>transformers</strong> for indoor application24 kV – Narrow type according to DIN 42600, part 8Description:<strong>Medium</strong>-<strong>volt<strong>ag</strong>e</strong> <strong>transformers</strong> for indoor application, which are converting multiple primary <strong>current</strong>s proportional and in-phaseinto measurable and standardized secondary <strong>current</strong>s.These <strong>transformers</strong> are fully resin-hardened in polyurethane and are serving apart of their main function as a <strong>current</strong> transformeras well as a bus bar support.These CTs are both applicable for measuring as well as for protection purposes. When ordering the selection has to be made.The medium-<strong>volt<strong>ag</strong>e</strong> <strong>current</strong> <strong>transformers</strong> are also available as multicore <strong>current</strong> <strong>transformers</strong>. The maximum quantity of coresdepends on the chosen burden and accuracy class.Technical data:CTS24M32Max. operating <strong>volt<strong>ag</strong>e</strong> U m:24 kVPower frequency <strong>volt<strong>ag</strong>e</strong>:50 kVLightning impulse <strong>volt<strong>ag</strong>e</strong>:125 kVTherm. nominal continuous rated<strong>current</strong> I cth:1.2 x I NTherm. rated short-time <strong>current</strong> I th:31.5 kA, 1 sec.Rated surge <strong>current</strong> I dyn:2.5 x I thPrimary nominal <strong>current</strong>:25 A – 3000 ASecondary nominal <strong>current</strong>:5 A or 1 ANominal frequency:50 / 60 HzMeasuring CT accuracy classes: 1; 0.5; 0.5S; 0.2; 0.2SProtection CT accuracy classes:5P5; 5P10; 5P20; 5P30;10P5; 10P10; 10P20; 10P30Insulation class:ECantilever strength:5000 NmWeight:approx. 28 kgSubject to technical modifications without noticePlease note, that the above mentioned data are standard values.Other values on request.P<strong>ag</strong>e 14MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGDrawings:Key:1 Cast resin housingPrimary connection M12x23, screws M12x25 (Please note: The primary connection is also available with a hole spacing of 40mm instead2of 32mm.)3 Rating plate4 Danger sign5 Transparent terminal cover6 Cable gland PG16 (Please note: On request the cable gland is also available with thread M20x1.5)7 Max. 6 secondary terminals M5x10, screws M5x128 Secondary earthing screws , red, M5x159 Fixing screws of terminal cover (sealable only when calibration is required)10 Base plate11 Earthing connection screw M8x16MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 15
MBS AGCTOSplit-core <strong>current</strong> transformer, fully resin-hardened for indoor applications0.72 kV / 1.2 kVFeatures / Benefits- Split-core <strong>current</strong> transformer suitable for measuring or protection purposes,depending on the design of the CT- The modular design of this series allows a large number of varieties within thedifferent CT sizes (f.e. two cores in one unit); please see next p<strong>ag</strong>e for detailsabout the different dimensions- Max. operating <strong>volt<strong>ag</strong>e</strong>: 0.72/3/- kV or 1.2/6/- kV; if the primary conductor issuitably insulated the CT can also be used above 0.72 kV or 1.2 kV- Primary <strong>current</strong> range: 50 A … 5000 A- Secondary <strong>current</strong>s: 1 A, 2 A or 5 A- Rated burden: 2.5 VA … 30 VA- Accuracy classes: 0.2S; 0.2; 0.5S; 0.5; 1; 3- Over-<strong>current</strong> rated limiting factor for measuring cores: FS5 or FS10- Protection classes: 5P / 10P / PX- Over-<strong>current</strong> rated limiting factor for protection cores: 5, 10, 15, 20, 30Dimensions:Primary opening diameter: max. 360 mmTransformer width: 150 - 500 mmTransformer depth: 60 - 300 mmPlease see next p<strong>ag</strong>e for details about the differentdimensions.General technical specifications:Therm. nominal continuous rated <strong>current</strong> I cth : 1,0 x I N or 1,2 x I N,other values upon requestTherm. nominal short-time <strong>current</strong> I th : Min. 100 x I N / 1 sec.,other values upon requestRated dynamic <strong>current</strong> I dyn : 2,5 x I thMax. operating <strong>volt<strong>ag</strong>e</strong> U m : 0,72 kV or 1,2 kVIsolation test <strong>volt<strong>ag</strong>e</strong>: 3 kV, U eff , 50 Hz, 1 min. or6 kV, U eff , 50 Hz, 1 min.Rated frequency: 50 Hz or 60 Hz, other values upon requestIsolation class: EApplicable technical standards: DIN EN 61869, part 1 + 2(formerly DIN EN 60044-1)Further information: Measuring systems fully hardened with Polyurethane resin The <strong>current</strong> <strong>transformers</strong> type CTO are intended for subsequent installation in existing low-<strong>volt<strong>ag</strong>e</strong> switchgear.In addition, there are customers who use these <strong>current</strong> <strong>transformers</strong> in medium-<strong>volt<strong>ag</strong>e</strong> switchgears, if theprimary conductor is suitably insulated.Further applications are wind turbines, facilities for power generation on ships, power distribution systems, etc. The two parts of the <strong>current</strong> transformer are held together by four screws with springs or spring clips on thesides, which ensures a permanent contact pressure. The secondary connection terminals are factory-fitted with M5 screws. A clear plastic cover serves as an touchprotection. Protection type: Housing: IP54, Terminal cover: IP20 Operating temperature: -5°C < T < +40°C Stor<strong>ag</strong>e temperature: -25°C < T < +70°C Mounting of CT by means of a baseboard attached to the resin body Pack<strong>ag</strong>ing unit: 1 Stk. Customs tariff number: 85043129P<strong>ag</strong>e 16MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGDimension drawings:Frame size x* y*A 60 25B 90 55C 120 85D 150 115E 200 165F 250 215G 300 265* Dimension x + y depends on the type and numberof measuring systems installed.Determination of <strong>current</strong> transformer type:Example: CTO 200 B 130Inner diameter (d1: 130 mm)Frame size (B: 90 mm)CT type: CTO 200CT type b1 b2 b3 max. d1 d2 h1 h2 h3 max. frame size DeliverableCTO 135 135 150 130 90 9 150 75 10 C Upon requestCTO 150 150 150 130 110 9 165 82.5 10 D Upon requestCTO 170 170 170 150 110 11 185 97.5 10 D YesCTO 200 200 200 180 140 11 220 110 10 E YesCTO 250 250 250 230 150 11 270 135 10 E YesCTO 300 300 300 280 210 11 330 165 10 F Upon requestCTO 350 350 350 330 250 11 380 190 10 F Upon requestCTO 400 400 400 370 300 13 430 215 15 G Upon requestCTO 500 500 500 440 360 13 530 265 15 G Upon requestMBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 17
MBS AGCTRSingle-piece <strong>current</strong> <strong>transformers</strong>, fully resin-hardened for indoor applications0.72 kV / 1.2 kVFeatures / Benefits- Single-piece <strong>current</strong> transformer suitable for measuring or protection purposes,depending on the design of the CT- The modular design of this series allows a large number of varieties within thedifferent CT sizes (f.e. two cores in one unit); please see next p<strong>ag</strong>e for detailsabout the different dimensions- Max. operating <strong>volt<strong>ag</strong>e</strong>: 0.72/3/- kV or 1.2/6/- kV; if the primary conductor issuitably insulated the CT can also be used above 0.72 kV or 1.2 kV- Primary <strong>current</strong> range: 50 A … 5000 A- Secondary <strong>current</strong>s: 1 A, 2 A or 5 A- Rated burden: 2.5 VA … 30 VA- Accuracy classes: 0.2S; 0.2; 0.5S; 0.5; 1; 3- Over-<strong>current</strong> rated limiting factor for measuring cores: FS5 or FS10- Protection classes: 5P / 10P / PX / TPS / TPY- Over-<strong>current</strong> rated limiting factor for protection cores: 5, 10, 15, 20, 30Dimensions:Primary opening diameter: max. 360 mmTransformer width: 100 - 500 mmTransformer depth: 60 - 300 mmPlease see next p<strong>ag</strong>e for details about the differentdimensions.General technical specifications:Therm. nominal continuous rated <strong>current</strong> I cth : 1,0 x I N or 1,2 x I N,other values upon requestTherm. nominal short-time <strong>current</strong> I th : Min. 100 x I N / 1 sec.,other values upon requestRated dynamic <strong>current</strong> I dyn : 2,5 x I thMax. operating <strong>volt<strong>ag</strong>e</strong> U m :Isolation test <strong>volt<strong>ag</strong>e</strong>:0,72 kV or 1,2 kV3 kV, U eff , 50 Hz, 1 min. or6 kV, U eff , 50 Hz, 1 min.Rated frequency: 50 Hz or 60 Hz, other values upon requestIsolation class: EApplicable technical standards: DIN EN 61869, part 1 + 2(formerly DIN EN 60044-1)Further information: Measuring systems fully hardened with Polyurethane resin The <strong>current</strong> <strong>transformers</strong> type CTR are intended for installation in low-<strong>volt<strong>ag</strong>e</strong> switchgear.In addition, there are customers who use these <strong>current</strong> <strong>transformers</strong> in medium-<strong>volt<strong>ag</strong>e</strong> switchgears, if theprimary conductor is suitably insulated.Further applications are wind turbines, facilities for power generation on ships, power distribution systems, etc. The <strong>current</strong> <strong>transformers</strong> are manufactured in a standard version with a round window opening. But optionallya rectangular window opening for bus bar mounting is possible to produce. The secondary connection terminals are factory-fitted with M5 screws. A clear plastic cover serves as an touchprotection. Protection type: Housing: IP54, Terminal cover: IP20 Operating temperature: -5°C < T < +40°C Stor<strong>ag</strong>e temperature: -25°C < T < +70°C Mounting of CT by means of a baseboard attached to the resin body (optionally: frontal threaded bushes) Pack<strong>ag</strong>ing unit: 1 Stk. Customs tariff number: 85043129P<strong>ag</strong>e 18MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGDimension drawings:Frame size x* y*A 60 25B 90 55C 120 85D 150 115E 200 165F 250 215G 300 265* Dimension x + y depends on the type and numberof measuring systems installed.Determination of <strong>current</strong> transformer typeExample: CTR 200 B 130Inner diameter (d1: 130 mm)Frame size (B: 90 mm)CT type: CTR 200CT type b1 b2 b3 max. d1 d2 h1 h2 h3 max. frame size DeliverableCTR 100 100 100 80 60 9 110 55 5 C Upon requestCTR 110 110 110 90 70 9 120 60 5 C Upon requestCTR 120 120 120 100 75 9 130 65 5 C Upon requestCTR 135 135 150 130 90 9 150 75 10 C YesCTR 150 150 150 130 110 9 165 82,5 10 D YesCTR 170 170 170 150 110 11 185 97,5 10 D YesCTR 200 200 200 180 140 11 220 110 10 E YesCTR 250 250 250 230 150 11 270 135 10 E Upon requestCTR 300 300 300 280 210 11 330 165 10 F Upon requestCTR 350 350 350 330 250 11 380 190 10 F Upon requestCTR 400 400 400 370 300 13 430 215 15 G Upon requestCTR 500 500 500 440 360 13 530 265 15 G Upon requestMBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 19
MBS AGASG 106Tube <strong>current</strong> transformer, fully resin-hardened for indoor applications0.72 kVFeatures / Benefits- Tube <strong>current</strong> transformer with up to 4 measuring systemsintegrated in one housing- Combination of measuring and protection <strong>transformers</strong> inone housing is possible- Max. operating <strong>volt<strong>ag</strong>e</strong>: 0.72/3/- kV; if the primary conductor issuitably insulated the CT can also be used above 0.72 kV- Primary <strong>current</strong> range: 40 A … 1250 A- Secondary <strong>current</strong>s: 1 A, 2 A or 5A- Rated burden: 2.5 VA … 30 VA- Accuracy classes: 0.2S; 0.2; 0.5S; 0.5; 1; 3- Over-<strong>current</strong> rated limiting factor for measuring cores: FS5 or FS10- Protection classes: 5P / 10P / PX- Over-<strong>current</strong> rated limiting factor for protection cores: 5, 10, 15, 20, 30Dimensions:Primary opening diameter: 106 mmTransformer width: 190 mmTransformer depth: 50, 100, 170, 214 mm*Please see next p<strong>ag</strong>e for details about the differentdimensions.General technical specifications:Therm. nominal continuous rated <strong>current</strong> I cth : 1.2 x I N,other values upon requestTherm. nominal short-time <strong>current</strong> I th : 25 kA / 3 sec.,other values upon requestRated dynamic <strong>current</strong> I dyn : 2.5 x I thMax. operating <strong>volt<strong>ag</strong>e</strong> U m : 0.72 kVIsolation test <strong>volt<strong>ag</strong>e</strong>: 3 kV, U eff , 50 Hz, 1 min.Rated frequency: 50 Hz, other values upon requestIsolation class: FApplicable technical standards: DIN EN 61869, part 1 + 2(formerly DIN EN 60044-1)Weitere Informationen: Measuring systems fully hardened with Polyurethane resin Full resin hardening and the used high-quality materials allow the application under extreme mechanicaland climatic conditions (f.e. application close to generator) Resin material with high fire safety (UL94-V0) Current transformer type tested by Siemens AG The <strong>current</strong> <strong>transformers</strong> type ASG 106 are intended for installation in low-<strong>volt<strong>ag</strong>e</strong> switchgear.In addition, there are customers who use these <strong>current</strong> <strong>transformers</strong> in medium-<strong>volt<strong>ag</strong>e</strong> switchgears, if theprimary conductor is suitably insulated.Further applications are wind turbines, facilities for power generation on ships, power distribution systems… Measuring cores with PTB approval available 4 different housing depths allow the realisation of different customer requirements Reduction of external wiring by means of flexible secondary connection cables (3.6 m, 4 mm², otherlengths and profiles upon request) Flexible terminal connections are protected by additional textile braided sleeving. Influence of cable length is taken into account in the interpretation of the measurement systems Operating temperature: -5°C < T < +60°C Stor<strong>ag</strong>e temperature: -25°C < T < +70°C Housing material: ABS, self-extinguishing, UL94-V0 Mounting of <strong>current</strong> <strong>transformers</strong> by with 2 pieces (optional 4 pieces) hex<strong>ag</strong>on bolts M8x30 Pack<strong>ag</strong>ing unit: 1 pc. Customs tariff number: 85043129P<strong>ag</strong>e 20MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGMeasurements:Housing depth x* 50 mm 100 mm 170 mm 214 mmMeasurement y(optional!)- 85 mm 155 mm 199 mm* Dimension x + y depends on the type and numberof measuring systems installed.MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 21
MBS AGVolt<strong>ag</strong>e <strong>transformers</strong> for indoor us<strong>ag</strong>e7.2 kV; 12 kV; 17.5 kV and 24 kV – Narrow, small and large type accordingDIN 42600, part 9; resp. part 7 or part 3In addition to our medium-<strong>volt<strong>ag</strong>e</strong> <strong>current</strong> <strong>transformers</strong>, we are also able to provide <strong>volt<strong>ag</strong>e</strong> <strong>transformers</strong> for <strong>volt<strong>ag</strong>e</strong> levels up from7.2 kV to 24 kV upon request.They are available both single-pole and double-pole insulated and can be used for measuring and protection purposes.For the single-pole insulated <strong>volt<strong>ag</strong>e</strong> <strong>transformers</strong>, there is also the possibility to provide them with an additional winding forearth-fault detection.Thereby we cover the <strong>com</strong>plete range of typical demands for medium-<strong>volt<strong>ag</strong>e</strong> switchgears.P<strong>ag</strong>e 22MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong>
MBS AGYour inquiry / order:Company:Address:_____________________________________________________________________________________________________________________Contact name:Telephone number:Email address:_____________________________________________________________________________________________________________________InquiryOrderPos. 1 Pos. 2 Pos. 3Quantity: ______________ ______________ ______________Ratio: ______________ ______________ ______________Core 1 (Burden and accuracy class): ______________ ______________ ______________Core 2 (optional) (Burden and class): ______________ ______________ ______________Core 3 (optional) (Burden and class): ______________ ______________ ______________Insulation level (z.B.12/28/75kV): ______________ ______________ ______________Values, which differ from our standard values mentioned in the data-sheets, please indicate below:(f.e. therm. rated short-time <strong>current</strong> I th of 20 kA instead of 31.5 kA; Frequency of 60 Hz instead of 50 Hz etc.)MBS AGEisbachstraße 51 ∙ 74429 Sulzbach-LaufenGermanyTelefon: +49 7976 9851-0 ∙ Telefax: +49 7976 9851-90E-Mail: info@mbs-<strong>ag</strong>.<strong>com</strong> ∙ Web: www.mbs-<strong>ag</strong>.<strong>com</strong> P<strong>ag</strong>e 23
Current <strong>transformers</strong> for industryCurrent <strong>transformers</strong> for tariffAccessories for <strong>current</strong> <strong>transformers</strong><strong>Medium</strong>-<strong>volt<strong>ag</strong>e</strong> CTsBus bar insulators / -supportsShuntsVolt<strong>ag</strong>e <strong>transformers</strong>All <strong>current</strong> sensorsMeasuring transducersEnergy meters for industryEnergy meters for tariffPanel board heaters, filter fans, rooffans and control unitswww.mbs-<strong>ag</strong>.<strong>com</strong>MBS AGEisbachstraße 51 • 74429 Sulzbach-Laufen • GermanyTelefon: +49 7976 9851-0 • Telefax: +49 7976 9851-90info@mbs-<strong>ag</strong>.<strong>com</strong> • www.mbs-<strong>ag</strong>.<strong>com</strong>MBS IDNR 8.4.0362/1000/3-2013