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ActiveCurrent SEnsorsFor Maximum AccuracyAdvanced Materials – The Key to ProgressActive current sensors for maximum accuracy1

The CompanyVACUUMSCHMELZEWe are a global company with our headquarters in Hanau, Germany. We currently have over4000 employees who are spread over production and sales locations in more than 40 countrieson every continent to generate annual sales of approximately EUR 490 million.Contents1. Introduction page 42. Standard Series page 63. Mechanical Drawings page 84. Cross-Reference List page 125. Technical Appendix page 136. Diagrams page 152 Active current sensors for maximum accuracy

The CompanyVACUUMSCHMELZEAdvanced Materials – The Key to ProgressVacuumschmelze GmbH & Co. KG is one of world'sleading producers of special metallic materials and relatedproducts. Our wide range of high quality semi-finishedproducts, parts, components and systems are used in virtuallyevery field of electrical and electronic engineering.This makes us one of the few global companies to offerits customers the complete range of magnetic technologyproducts from a single source – from magnetically softproducts to the most powerful permanent magnets in theworld.In all our activities, we benefit from our highly developedmaterial expertise and our decades of experience in magnetictechnology. As early as 1923, we became the firstcompany to introduce alloy smelting in a vacuum on anindustrial scale and it was from this process that the nameVACUUMSCHMELZE was derived.One of our great strengths is our versatility. All of theworld's key industries rely on products and expertise fromVACUUMSCHMELZE, with our principal customers activein drive and installation technology, medical technology,renewable energy, automation systems, process and controlengineering, measurement technology, as well as thevery important automotive and aerospace industries. VAC'sdedicated solutions are developed in close cooperationwith customers and reflect the highest levels of materialand application expertise combined with the latest productiontechnology.Active current sensors for maximum accuracy3

• closed-loop sensor with magnetic probe developed by VAC• four standard series for rated currents of 6 A to 100 A andpeak currents up to + 200 A in compact designs• types for + 5 Volt power supply with voltage output. Optionalinternal or external reference voltage• types for ± 12 ... 15 Volt power supply with current output• very good measuring accuracy, minimum DC offset withvery low hysteresis• negligible output noise or periodic signal at zero input• very low temperature dependence and long-term drift ofthe output variable• low rise time, wide frequency range• low-cost constructions• industry standard dimensions and pinningActive current sensors for maximum accuracy5

Type Series of VAC current sensorsItem no.Type T60404-N…Rated currentIPN, rms@K N = 1 : NMax. measuring rangeIPmax. @ V C = + 5 V or V C = ± 15 VTurns ratioK NOutput variableV ref -input/output 2Ambient temperature rangeT ambSupply voltageV CCreepage/clearanceSystem/working voltageacc. to EN 61800-5-1(reinforced insul.; insul. mat.group 1; PD 2; OV 3)Frequency rangefAccuracyX @ IPN; T amb = 25 °CMechanical outline[A]64646-3X653 3 2154646-7.5X652 3 5254646-12X651 3 8504646-12X654 3 864646-3X663 2 2154646-7.5X662 1,2 5254646-12X661 1,2 8504646-12X664 24646-X7634646-X7624646-X7614646-X7648631.5157.53.752512650126[A]±20±10±7±51±25±17±85±42±28±150±75±50±20±10±7±51±25±17±85±42±28±150±75±50±20±10±5±51±25.5±12.5±85±42±21±150±75±37.51:20002:20003:20001:20002:20003:20001:20002:20003:20001:14002:14003:14001:20002:20003:20001:20002:20003:20001:20002:20003:20001:14002:14003:14001:20002:20004:20001:20002:20004:20001:20002:20004:20001:14002:14004:1400[° C]-40 to[V] [mm] [V][kHz]DC toV 5 + 85 + 5 7/7 300/650 200 0.7 1V 5 + 85 + 5 7/7 300/650 200 0.7 1V 5 + 85 + 5 7/7 300/650 200 0.7 1V 5 + 85 + 5 7/7 300/650 200 0.7 1V 5 yes + 85 + 5 7/7 300/650 200 0.7 2V 5 yes + 85 + 5 7/7 300/650 200 0.7 2V 5 yes + 85 + 5 7/7 300/650 200 0.7 2V 5 yes + 85 + 5 7/7 300/650 200 0.7 2V 5 yes + 85 + 5 9.6/10.6 600/1060 200 0.7 3V 5 yes + 85 + 5 9.6/10.6 600/1060 200 0.7 3V 5 yes + 85 + 5 9.6/10.6 600/1060 200 0.7 3V 5 yes + 85 + 5 9.6/10.6 600/1060 200 0.7 3[%]6 Active current sensors for maximum accuracy

Item no.Type T60404-N…Rated currentIPN, rms@K N = 1 : NMax. measuring rangeIPmax. @ V C = + 5 V or V C = ± 15 VTurns ratioK NOutput variableV ref -input/output 2Ambient temperature rangeT ambSupply voltageV CCreepage/clearanceSystem/working voltageacc. to EN 61800-5-1(reinforced insul.; insul. mat.group 1; PD 2; OV 3)Frequency rangefAccuracyX @ IPN; T amb = 25 °CMechanical outline[A]4646- 50X460 2 25174646- 100X461 2 504646-X3004646-X4004646-X4104646-X4124646-X4133325128652510850201510035251003525[A]±150±75±50±200±100±66±85±43±28±21±17±130±65±43±128±64±43±175±82±58±208±104±691:14002:14003:14001:11002:11003:11001:10002:10003:10004:10005:10001:10002:10003:10001:10002:10003:10001:20002:20003:20001:15002:15003:1500[° C]-40 to[V] [mm] [V][kHz]DC toV 5 yes + 85 + 5 10.2/10.2 600/1020 100 0.7 4V 5 yes + 85 + 5 10.2/10.2 600/1020 100 0.7 4I + 85I + 85I + 85I + 85I + 85+ 12... 15+ 12... 15+ 12... 15+ 12... 15+ 12... 15[%]10.2/10.2 600/1020 200 0.5 510.2/10.2 600/1020 200 0.5 610.2/10.2 600/1020 200 0.5 710.2/10.2 600/1020 200 0.5 710.2/10.2 600/1020 200 0.5 71Reflow-solderable versions (“Paste-to-Pin”) of these types are available. Please enquire.2Reference voltage output 2.5 ± 0.005 V. Ri = 670 Ohm. Can be overwritten and therefore used as an input for an external reference. Voltage range 0 ... 4 V.3Types without reference voltage input/output (V ref – pin): For new developments we recommend the use of the types of 4646-X66x or 4646-X76x with referencevoltage input/output to achieve higher measuring accuracy.4The rated current for these types is only a reference value. They all can be used up to the maximum ambient temperature, loaded with the following rms valuesper primary turn: 17 A in parallel connection, 12 A in series connection. Within these limits, the sensor type can be selected according to the measuring range.5V A = V ref ± (0.625 * I P /I PN ), resp. V A = 2.5 V ± (0.625 * I P /I PN ).Examples, type 4646-X761: Primary current (peak) = 85 A. Output voltage range (peak) = 2.5 V ± (0.625 * 85 A/25 A) = 0.375 V ... 4.625 VPrimary current (RMS) = 20 A. Output voltage range (RMS) = 0.625 * 20 A/25 A = 0.5 V rmsActive current sensors for maximum accuracy7

Mechanical outlinesDrawing no. 1TypeT60404-N4646-X651T60404-N4646-X652T60404-N4646-X653T60404-N4646-X654Drawing no. 2TypeT60404-N4646-X661T60404-N4646-X662T60404-N4646-X663T60404-N4646-X664Photos for illustration purposes only8 Active current sensors for maximum accuracy

Drawing no. 3TypeT60404-N4646-X761T60404-N4646-X762T60404-N4646-X763T60404-N4646-X764Drawing no. 4TypeT60404-N4646-X460T60404-N4646-X461Photos for illustration purposes onlyActive current sensors for maximum accuracy9

Drawing no. 5TypeT60404-N4646-X300Drawing no. 6TypeT60404-N4646-X400Photos for illustration purposes only10 Active current sensors for maximum accuracy

Drawing no. 7TypeT60404-N4646-X410T60404-N4646-X412T60404-N4646-X413Photos for illustration purposes onlyActive current sensors for maximum accuracy11

Cross-Reference ListThe sensors of the VAC type series can replace competitiveproducts in many cases and generally offer superior performancewith respect to accuracy, temperature drift and qualityof the quiescent signal. The following table lists the availableproducts with which the VAC sensors are electricallyand mechanically compatible according to the data sheetcomparison.Minor differences may still exist and therefore the customeris responsible for the actual suitability in their specific application.A large number of other competitive types can be replacedfunctionally with modifications to the PCB layout/circuit design.Please ask about these.Item no.Type T60404-N…4646-X6534646-X6524646-X6514646-X6544646-X6634646-X6624646-X6614646-X6644646-X7634646-X7624646-X7614646-X7644646-X4604646-X4614646-X3004646-X4004646-X4104646-X412LEM Honeywell Tamura Telcon RemarksCAS 6-NP 1,2LTS 6-NP 1CAS 15-NP 2LTS 15-NP 1CAS 25-NP 2LTS 25-NP 1CAS 50-NP 2CASR 6-NP 2LTSR 6-NP 1CASR 15-NP 2LTSR 15-NP 1CASR 25-NP 2LTSR 25-NP 1CASR 50-NP 2CKSR 6-NP 2CKSR 15-NP 2CKSR 25-NP 2CKSR 50-NP 2S22P006S05S22P015S05S22P025S05LAS 50-TPLAS 50-TP/SP1LAS 100-TPLAS 100-TP/SP1LA 25-NP CSNE 151HTP25NPCSNE 151-005CSNE 151-006CSNE 151-007CSNE 151-010LAH 25-NP HTP25CPT 3HTP25CPTH 1,3LAH 50-P/SP1 S23P50D15M1 4,5S23P100D15M1 4,5 HTP50CPTH 1,3LAH 50-PS23P50D15 4 HTP50CPT/2K 1,3LAH 100-P/SP3S23P100D15M6 4LAH 100-PS23P100D15 4 HTP100CPT/2K 31VAC-types without primaryconductor-opening2VAC-types 8 mm higher3VAC-types 3 mm wider4VAC primary pinsø 1.5 mm5VAC-measuring range ± 128 A12 Active current sensors for maximum accuracy

Technical AppendixFunctional Principle of VAC Current sensorsTwo major advantages of the compensation current sensorsare their high linearity and their excellent dynamic properties.The current I P to be measured is magnetically coupledto the compensation current through a soft magnetic core.The magnetic flux of this core is measured by a magneticprobe and controlled to zero by the electronics, generating acompensation current I S in the compensation coil. This currentand thus the output voltage across the burden resistorare proportional to the primary current I P .CompensationCoilPrimaryConductorMagneticCoreMagnetic FieldDetectorElectronicCircuitR BOutputVoltageDifferent sensor principles –accuracy of the current capture and quality of the outpuT signalOpen loop Hall effect-sensors without compensationcoilThe accuracy of these types of sensors differs from the twoother principles. Their error over the whole temperaturerange is 7.5 % to 12 %. About half of this error is temperature-dependent.The series scattering of the temperature responsesof the Hall elements prevents the possibility of compensation.Their output signal is also very noisy and has alower bandwidth. Open loop Hall effect sensors can be usedfor less demanding applications.VAC closed loop sensors with magnetic probeThese types reach an up to two times higher accuracy thanclosed loop Hall effect-sensors over the entire applicationtemperature range of -40 °C to + 105 °C or higher. This ismore important than the error value only at room temperature.The superimposed noise of the VAC sensor has a lowlevel, is high frequency periodic and therefore easy to filter.There is practically no noise.Closed loop Hall effect-sensorsThey achieve approximately half the accuracy of the VACsensors, i.e. 2 % to 3 % over the permissible ambient temperaturerange which is smaller (typically -25 ... 85 °C insteadof -40 ... 85 °C). Their output signal is superimposedby noise. This semiconductor noise is broadband and cannotbe filtered out.Active current sensors for maximum accuracy13

VAC closed loop sensors offerhigh continuous and peak currentsin a very compact formTypes, like e.g. T60404-N4646-X764, detect maximum rmscontinuous currents up to 50 A and peak currents up to ± 150 Ain a design with the dimensions 22.2 mm x 10.0 mm x 24.0 mm(L x W x H).Reflow-solderable types availableThe types T60404-N4646-X681 and -X682 (not included inthis brochure) are electrically and mechanically compatible tothe types T60404-N4646-X661 and -X662. They are howeverreflow-solderable and are therefore suitable for the automatedprocessing e.g. on PCBs, which are exclusivly or predominantlyequipped with SMD components.VAC recommends the temperature profile for lead-free solderingshown in the graph below. The optimal soldering profilefor the specific application may however vary and must bedetermined by the user.300reflow – soldering profile250temperature [°C]2001501005000 50 100 150 200 250 300 350 400time [s]14 Active current sensors for maximum accuracy

TYpical performanceMeasured at VAC sensor with unipolar + 5 V supply and voltageoutput.T60404-N4646-X661, I P,N = 25 A, I Pmax. = ± 85 A.Temperature response offsetLow offset, almost temperature-independent, easily compensatable(I P =I P,N )0.0250.015Vout-2.5V [V]0.005-0.005-0.015-0.025-40 -20 0 20 40 60 80 100 120T [°C]Temperature response gainLow gain-error, almost temperature-independent (I P =I P,N )2Gain Error [%]10-1-2-40 -20 0 20 40 60 80 100 120T [°C]Pulse responseThe output signal V out (here expressed as the equivalent ofthe input current) follows the input signal I P with negligibledelay and adapts quickly to the static value. Shown here forI P = 25 A and I P = 80 A.I [A]100806040200-200 1 2 3 4 5 6– lp [A] – l(V out ) [A] – lp [A] – l(V out ) [A]Active current sensors for maximum accuracy15

vacuumschmelze gmbh & co. kggrüner weg 37d 63450 hanau / germanyphone +49 6181 38 0fax +49 6181 38 2645info@vacuumschmelze.comwww.vacuumschmelze.comvac sales usa llc2935 dolphin drivesuite 102elizabethtown, ky 42701phone +1 270 769 1333fax +1 270 765 3118info-usa@vacuumschmelze.comVACUUMSCHMELZE Singapore Pte Ltd1 Tampines Central 5, #06-10/11CPF Tampines Buildingsingapore 529508phone +65 6391 2600fax +65 6391 2601vacsingapore@vacuumschmelze.comKB – Current Sensors for Maximum accuracy • Edition 2013© VACUUMSCHMELZE GmbH & Co. KG 2013. All rights reserved.As far as patents or other rights of third parties are concerned, liability is only assumed forproducts per se, not for applications, processes and circuits implemented within these products.The information describes the type of product and shall not be considered as assuredcharacteristics. Terms of delivery and rights to change design reserved.Advanced Materials – The Key to Progress16 Active current sensors for maximum accuracy