Maconic Shunt Resistors - Knick USA

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Maconic Shunt Resistors - Knick USA

The Art of Measuring.Reliable measurement ofDC currents up to the kA rangewith a high level of accuracyMaconic Shunt Resistors


Maconic Shunt ResistorsUsageIn many areas of applications the useof shunt resistors has established itselfas a reliable, precise and long-termstable solution for continuous measurementof DC current. The low voltagedrop across the shunt resistor is directlyproportional to the flowing current. Itis sensed by a specially designed shuntisolator, where it is converted to a standardsignal and output as a measureof the current for further processing incontrollers or displays.DC currents are measured in a diverserange of applications, includingphotovoltaics, power supply of publictransport systems, control of motorsand generators, DC busses of inverters,welding equipment, and generally insystems with high DC currents.TaskThe currents to be measured areassociated with system voltages (potentials)which must be safely separated,i.e. galvanically isolated by the shuntisolator. Here, it is important that thevoltage measurement is not affected bycommon mode influences. This can beachieved even for shunt voltages as lowas 60 mV by suitably designed shuntisolators. Higher shunt voltages arenot necessary with high-quality shuntisolators and because of the physicallylarger shunt resistors they are generallynot desired.Particularly for high currents, the loss inthe shunt resistor must be very low toprevent excessive heating. In any case,the resistance of the shunt should beas constant as possible with changingtemperatures. The shunt resistor mustbe insensitive to corrosion or otherenvironmental effects. Here, specialattention must be paid to materialand workmanship.2


SolutionMaconic shunt resistors are the resultof many years of experience in thedesign and production of such resistors.They are carefully manufacturedusing high-quality materials. Theresistor bars are made of manganin,a special manganese-copper-nickelalloy, so that a very low temperaturecoefficient is achieved.Dimensioning and mechanical constructionare such that the resistorsonly moderately heat up until therated current is reached.The shunt resistors and associatedshunt isolators achieve a very goodlong-term stability, which guaranteesthe specified accuracy over the normalperiods of application of manyyears. Current peaks do not causeany offset or drift.Protection equipment based oncurrent measurement benefits fromthe reliability and long-term stabilityof the measurement and achievesa particularly high level of safetyperformance.Due to the low shunt voltage of60 mV, the dimensions of the shuntresistor can be comparatively small– and this is not at the expense ofmeasurement accuracy becausethe shunt isolators from Knick areoptimized for their special task.Safe measurement of currentsassociated with high system voltagesup to the kV range is also possible.The 3-port-isolated transmittersprovide a correspondingly highgalvanic isolation and are rated at3.6 kV working voltage / 15 kV testvoltage.3


FactsFactsPrecise and long-term stablemeasurement of DC currentsusing shunt resistorsFor currents up to 15 kA,up to 8 kA with standard devicesLow shunt voltage /small dimensions thanks tospecial shunt isolatorsShunt accuracy: Class 0.5optionally Class 0.2Shunt isolator/transmitterwith 0.1% gain errorMeasurement principleprevents influences fromadjacent linesGalvanic isolation between powerunit and control unit up to 3.6 kVworking voltage / 15 kV test voltageConversion to standard signals± 20 mA, ± 10 V, 4 … 20 mAMTBF of 96 years for the completecurrent measurement system5-year warrantyAeas of ApplicationsPhotovoltaicsDC-supplied public transport systemsControl of motors and generatorsControl of DC bus voltage /frequency invertersWelding equipmentHigh overload capacity withoutremaining measurement error4


Selection AidCurrentmeasurementI < 100 mACurrentmeasurementI < 5 ACurrentmeasurementI > 5 AVoltagemeasurementWorking voltage< 1000 VVariTrans P 27000universal transmitterVariTrans P 29001Maconic shuntresistor +shunt isolatorVariTrans P 29001Maconic shuntresistor +shunt isolatorVariTrans P 29000high-voltageisolation amplifierWorking voltage> 1000 VVariTrans P 43000current transmitterVariTrans P 43000current transmitterVariTrans P 41000Maconic shuntresistor +shunt isolatorVariTrans P 42000high-voltageisolation amplifierWorking voltage> 2200 VVariTrans P 43100current transmitterVariTrans P 43100current transmitterVariTrans P 41100Maconic shuntresistor +shunt isolatorVariTrans P 42100high-voltageisolation amplifier5


Product LineRatedcurrentRated voltagedropAccuracy class Order no. Picture (example)10 A25 A60 mV60 mV0.50.5Maconic M10SMaconic M25S40 A100 A150 A60 mV60 mV60 mV0.50.50.5Maconic M40SMaconic M100SMaconic M150S250 A300 A60 mV60 mV0.50.5Maconic M250SMaconic M300S400 A500 A600 A800 A60 mV60 mV60 mV60 mV0.50.50.50.5Maconic M400SMaconic M500SMaconic M600SMaconic M800S1000 A1200 A60 mV60 mV0.50.5Maconic M1000SMaconic M1200S1500 A2000 A60 mV60 mV0.50.5Maconic M1500SMaconic M2000S2500 A3000 A60 mV60 mV0.50.5Maconic M2500SMaconic M3000S4000 A5000 A60 mV60 mV0.50.5Maconic M4000SMaconic M5000S6000 A8000 A60 mV60 mV0.50.5Maconic M6000SMaconic M8000S6


Rated currentRated voltagedropAccuracy classOrder no.500 A 60 mV 0.2 Maconic M500HS1000 A 60 mV 0.2 Maconic M1000HS2000 A 60 mV 0.2 Maconic M2000HS2500 A 60 mV 0.2 Maconic M2500HS4000 A 60 mV 0.2 Maconic M4000HSOther current or voltage values, e.g. 50 mV versions, are available upon requestCap for type A shunt resistorsup to 150 A, 60 mV (use with insulating base only)Insulating base for type A shunt resistors,30 to 150 A, 60 mV (up to 25 A included in package contentsof shunt resistor)ZU 0901ZU 09107


Typical ApplicationsCurrent measurement using shunt resistor1100 V DC4000 A DCMaconicM4000Sshuntresistor0 ... 60 mVVariTrans P 41000shunt isolation amplifier4 ... 20 mAControlunitM20 ... 253 V AC/DCDirect current measurement1100 V DC5 A DCVariTrans P 41000Current Transmitter4 ... 20 mAControlunitload20 ... 253 V AC/DCCurrent measurement and voltage measurement600 V DCMaconicM1000SshuntresistorVariTrans P 29001current transmitter± 20 mA20 ... 253 V AC/DCVariTrans P 29000voltage transmitterControlunitload± 20 mA20 ... 253 V AC/DC8


SpecificationsAccuracy underrated conditionsClass 0.5 or Class 0.2Overload capacity Permanent 120% full scaleMax 5 s Rated < 2000 A 500% full scaleRated > 2000 A200% full scaleRated conditions23 °C ± 1 KAmbient conditions Climate suitability Climatic class 3 according to VDE/VDI 3540Ambient temperature Operation -10 ... +55 °CTransport and storage -25 ... +65 °CRelative humidityAnnual average < 75%, no condensationMountingType Awith insulating baseUp to 150 ASnap-on mounting for35-mm top-hat railaccording to EN 60715or wall mounting,screws max. M8Type B Up to 3000 A L profilesType C Up to 8000 A T profilesMaterial Resistor bars ManganinConnecting pieces Type A BrassType BBrass/copperType CCopperBase material Type A Lexan, black,self-extinguishingto UL 94 V–0Connections Current For threaded screws, see tableIngress protection IP 00Voltage M5 x 8DimensionsWeightSee dimension drawings and product lineSee dimension drawings and product line9


Dimension DrawingsType Awith insulating basehwith insulating base and cap85158ab309302838.533.5115122135c115123135Type Bd10hecfbaType Ccdghe f fbaAll dimensions in mm10


RatedcurrentRated Typevoltage dropWeight(kg)Dimensions(mm)Currentconnections oneach sideAccuracyclassOrder no.a b c d e f g h10 A 60 mV A 0.13 90 78 20 1 M5x12 0.5 Maconic M10S25 A 60 mV A 0.13 90 78 20 1 M5x12 0.5 Maconic M25S40 A 60 mV A 0.13 100 80 20 1 M8x16 0.5 Maconic M40S100 A 60 mV A 0.13 100 80 20 1 M8x16 0.5 Maconic M100S150 A 60 mV A 0.13 100 80 20 1 M8x16 0.5 Maconic M150S250 A 60 mV B 0.61 145 105 30 30 15 1 M12x40 0.5 Maconic M250S300 A 60 mV B 0.61 145 105 40 30 20 1 M16x45 0.5 Maconic M300S400 A 60 mV B 0.83 145 105 40 30 20 1 M16x45 0.5 Maconic M400S500 A 60 mV B 0.83 145 105 40 30 20 1 M16x45 0.5 Maconic M500S600 A 60 mV B 0.85 145 105 40 30 20 1 M16x45 0.5 Maconic M600S800 A 60 mV B 0.90 145 105 40 30 20 1 M16x45 0.5 Maconic M800S1000 A 60 mV B 1.45 165 115 60 30 30 1 M20x50 0.5 Maconic M1000S1200 A 60 mV B 1.45 165 115 90 30 21 48 2 M16x45 0.5 Maconic M1200S1500 A 60 mV B 1.96 165 115 90 30 21 48 2 M16x45 0.5 Maconic M1500S2000 A 60 mV B 2.30 165 115 90 30 21 48 2 M16x45 0.5 Maconic M2000S2500 A 60 mV B 2.90 165 115 120 30 21 48 2 M16x45 0.5 Maconic M2500S3000 A 60 mV B 3.00 165 115 120 30 21 48 2 M16x45 0.5 Maconic M3000S4000 A 60 mV C 4.25 165 115 120 60 30 60 15 2 M20x50 0.5 Maconic M4000S5000 A 60 mV C 4.30 165 115 120 60 30 60 15 2 M20x50 0.5 Maconic M5000S6000 A 60 mV C 10.5 175 125 154 130 25 52 25 3 M20x75 0.5 Maconic M6000S8000 A 60 mV C 12.0 175 125 154 130 25 52 25 3 M20x75 0.5 Maconic M8000S500 A 60 mV B 210 160 60 30 30 – – 1 M20x50 0.2 Maconic M500HS1000 A 60 mV B 210 160 120 30 30 60 – 2 M20x50 0.2 Maconic M1000HS2000 A 60 mV C 210 160 120 60 30 60 15 2 M20x60 0.2 Maconic M2000HS2500 A 60 mV C 220 170 120 130 30 60 25 2 M20x60 0.2 Maconic M2500HS4000 A 60 mV C 220 170 154 130 25 52 25 3 M20x75 0.2 Maconic M4000HSOther current or voltage values, e.g. 50 mV versions, are available upon request11


Isolation Amplifiers / TransmittersIndicatorsProcess AnalyticsPortable MetersLaboratory MetersSensorsFittingsKnickElektronische MessgeräteGmbH & Co. KGBeuckestraße 22, 14163 Berlin,GermanyPhone: +49 30 801 91 - 0Telefax: +49 30 801 91 - 200knick@knick.de · www.knick.deTP-252.101.Shunts-E0312_5000 Subject to change without notice

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