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1. Storage conditions Temperature 20 85 C Relative humidity 20 80 RH Table 1 General specifications for rack electronics 140528 2 Page 7 of 32 1 _ a l LEM gt Compliance with regulations FCC statement This equipment complies with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference in which case the user will be required to correct the interference at his own expense CE statement This product has been tested and found to comply with the following standards Electrical safety IEC EN 61010 1 Electromagnetic Compatibility Emission IEC EN 61326 1 2006 FCC 47 CFR Part 15 Immunity IEC EN 61326 1 2006 A technical file is kept available at LEM Switzerland S A Chemin des Aulx 8 P O Box 35 1228 PLAN LES OUATES Geneva Switzerland 140528 2 Page 8 of 32 LEM CIN Usage precautions and recommendations N The following precautions are recommended to insure your safety and to provide the best operating conditions of this instrument If this equipment is used in a manner not specified by the manufacturer the protect
2. LEM ITZ FLEX ULTRASTAB USER GUIDE 140528 2 Page tot 32 Ss LEM ZS TABLE OF CONTENTS TABLE OF CONTENTS tocino dd ba 2 ESTORFIGURES c coat aida 3 LIST OR TABLES usuaria 3 DOCUMENT INFORMATIONS reinoirei ada a aiea aaia aa anales 3 INTRODUC TION cirio rastrera did 4 RECEIVING AND UNPACKING occccocccoconcnonnccnoncnnnnnononnnnnnnnccnn rca 6 GENERAL SPECIFICATIONS FOR RACK ELECTRONICS 0 ccccceeeeeeeeeeeeeeeeeeeeeeseeeeesaeeesaeseeneeeaas 7 1 Compliance with regulations cccccccceceecceceeeeeeneeeeeeeeceaeeeeaaeseeaeeseeeeecaeeeeaaesseaeeseaeeescaeeeseaeeseneeseaees 8 2 Usage precautions and recommendations ooocnncccnnnanicinnnoccnnnnnnnncnnnnnnn cnn nano cnn narran 9 2 1 Tom ANOS VIMIDONS AL A E 9 2 2 General USO and WAL oiiiinicnnoniccinncccnncc cnn 9 2 3 Grounding CONSIAeraliONS oooonnniiicinninnnnjln nninnncconcccncrc can 9 2 4 A E 9 2 5 Precautions TOF USC od toda jon ane 10 3 QUICK Static 11 3 1 Syster OVEIVIOW o iia 11 3 2 Setting Uli a 12 4 TINTO dU CIO iia pool tics 14 4 1 Main teal iii a eae 14 4 2 Standard transducer NCGS ooococoicicncnnnnnnconnnccnconcccnc cnc 14 4 3 CuSIOM transducer heads mesias UR conan 15 4 4 Vollage OUtDUt MOGUIC scien jet nee ae te ee an ne ee eed 15 4 5 Current conversion ratio and programmability ccccccccceeseceenee eens eeeeaeeeeaeeceeeeetaaeeesaeeseneeesaees 15 4 6 A O O NR 17 4 7 Atado ta 18 4 8 Transducer NOUT ricota da 19 5 Installation G
3. Vout Active Low Output Active High Output 140528 2 Page 24 of 32 In the Diagram A Active Low Output the output signal Voy switches to GND when the corresponding LED is ON In the Diagram B Active High Output the output signal Vout switches to Uc when the corresponding LED is ON When the output signal Vout is switched to GND its value is lower than 0 2 V When the output signal Vou is switched to Uc its value is equal to Uc output Diagram Vout Description signal OVERLOAD A lt 0 2V_ The transducer head is saturated due to excessive primary current Uc The transducer head is not saturated B Uc The transducer head is saturated due to excessive primary current lt 0 2VW The transducer head is not saturated High Ip A lt 0 2V_ The primary current is higher than 105 of nominal full scale output Uc The primary current is lower than 105 of nominal full scale output B Uc The primary current is higher than 105 of nominal full scale output lt 0 2V_ The primary current is lower than 105 of nominal full scale output ACTIVE A lt 0 2V_ The primary current is higher than approximately 1 of nominal full scale output Uc The primary current is lower than approximately 1 of nominal full scale output B Uc The primary current is higher than approximately 1 of nominal full scale output lt 0 2V_ The primary current is lower than approximatel
4. In the event that fuses need DA replacement please consult your local LEM Sales representative Please include Type and Serial no with all communication with LEM Switzerland or the local representative 140528 2 Page 9 of 32 2 5 Precautions for use Due to the nature of the zero flux based transducer principle it is necessary to take the following precautions A CAUTION Do not subject the system to primary current without mains power applied CAUTION Do not operate the system with a disconnected secondary when the system A is subject to primary current 140528 2 Page 10 of 32 DM Se ZY L IAN 3 Quick start 3 1 System overview Digital Digital Multimeter Multimeter IMPORTANT The GREEN secondary current path must be closed at all times when MAINS power is applied If only one of the two current output ports is in use the other MUST be shorted with the appropriate shorting plug Mains A Monitor Status 100 240V Ferrite core Connector Interlock 50 60Hz 1V full scale Connector 4mm Banana Output Is return Power Front Panel Indicators Amplifier OVERLOAD HIGH Ip 600A ACTIVE 2000A ITZ Rack Electronics POWER 5000A STATUS 10000A CUSTOM 16000A 24000A Figure 1 System overview for Current Output Digital Digital Multimeter Multimeter IMPORTANT The GREEN secondary current path must be closed at all times when MAINS power is applied Mains Monitor
5. Status 100 240V Ferrite core Connector Interlock 50 60Hz inl 1V full scale Connector m W 4mm gt Banana Output Is return Power Amplifier Is return Voltage Output Module Front Panel Indicators OVERLOAD HIGH Ip 600A ACTIVE 2000A ITZ Rack Electronics POWER 5000A STATUS 10000A CUSTOM 16000A 24000 Figure 2 System overview for Voltage Output A A 140528 2 Page 11 of 32 Setting up To quickly get your new ITZ FLEX ULTRASTAB system operational follow the instructions given below Connect the transducer head to the unit using the supplied transducer head cable and mount the programming plug in the connector on the transducer head if your system has the programming feature please note that not all transducer heads are programmable Connect a Digital Multimeter DMM to the unit If your unit has current output S or SPR versions The primary access is through the Analog Output Port using the Current Output Adaptor supplied with the ITZ system The unit also has a secondary output through the 4 mm banana terminals on the back panel of the ITZ unit Since the primary and secondary current outputs are connected electrically in series internal to the electronics the 4 mm banana terminals should be left shorted using the supplied shorting plug for this exercise CAUTION It is MANDATORY that the secondary current path remains CLOSED whenever the system is powered if not there
6. substrate Mounting screw Figure 5 CAUTION Using too long screws may cause damage to the inner parts of the transducer head and lead to malfunction ITZ 5000 140 and ITZ 10000 100 These transducer heads are mounted using four M10 screws inserted into the holes on the brackets These heads may be installed in any orientation 140528 2 Page 20 of 32 N _ oa a 3 5 4 l LEM y N Grounding the transducer head For safety reasons all types of transducer heads must be properly grounded Follow the description below for the appropriate transducer head in order to establish a good grounding connection ITZ 600 25 PR A Ground wire min 1 5 mm with an 4 3 mm ring tongue must be connected to the transducer head The ring tongue is fastened to the M4 stud in the lower rightmost corner of the STH600 using a M4 nut ITZ 2000 50 PR A ground wire min 1 5 mm with an 8 3 mm ring tongue must be connected to the transducer head The ring tongue is placed on one of the 4 mounting screws before mounting the head ITZ 5000 140 and ITZ 10000 100 A Ground wire min 1 5 mm with an Y 10 8 mm ring tongue must be mounted to the transducer head The ring tongue is placed on one of the 4 mounting screws before mounting the head ITZ 16000 150 and ITZ 24000 150 A Ground wire min 1 5 mm with an 12 3 mm ring tongue must be mounted to the transducer head The ring tongue is placed on on
7. when the transducer output is active with an lp higher than 105 of nominal full scale output OVERLOAD This LED is lit red when the transducer head saturates due to excessive primary current 600 A 24000 A These LEDs are lit Yellow when a transducer head with the corresponding full scale range is connected to the ITZ FLEX ULTRASTAB CUSTOM This LED is lit Yellow when the system setup has detected a custom head configuration STATUS This LED is lit Green when the status of the unit is OK Output current offset adjustment An offset adjustment is positioned next to the left most handle The adjustment is accessible using a miniature slotted screwdriver A CAUTION Please refer to section 6 for instructions on how to adjust offset correctly 140528 2 Page 17 of 32 Figure 4 Back panel of electronic rack All connections on the ITZ FLEX ULTRASTAB are located on the rear of the unit 1 140528 2 IEC power inlet This connector accepts a standard IEC power cord IMPORTANT The power inlet also serves as mains switch IMPORTANT The unit operates with a universal mains input This means that the unit does not require any switching between mains voltages as long as the supplied mains voltage is within 100 240 V AC 50 60 Hz IMPORTANT The unit has no externally accessible user serviceable fuses If the unit requires replacement of fuses please contact your local LEM Switzerland S A sales representa
8. NC 4 40 screw lock connector This connector is used with suitable programming plugs accessory for further information please refer to section 4 5 for further information on programmability A CAUTION A programming plug must be connected to the programming port of a programmable head when the system is powered 140528 2 Page 19 of 32 gt LEM Installation al Mounting requirements for the electronics unit a The ITZ FLEX ULTRASTAB can be mounted in either a rack based system or as a stand alone unit using the supplied rubber feet CAUTION The unit must be mounted horizontally To ensure proper cooling keep ventilated ides on side and back panel free Failure to do this may result in improper cooling of the system which may lead to malfunction of the unit 5 2 Mounting requirements for the transducer heads ITZ 600 25 PR Use the mounting bracket part no 7100088284 to mount the 600 A transducer head It may be installed in any orientation ITZ 2000 50 PR The 2000 A transducer head must be installed using two M8 screws The head may be mounted in any orientation Please observe that the length of the screws may not exceed the length D shown in figure 5 To calculate the maximum length of the mounting screw measure the thickness of the mounting substrate C and add the length A B which is 10 mm 15 mm Max Screw length D 10 15 C mm Transducer core Mounting plate Heroes CEM Mounting
9. OSED whenever the A system is powered if not there is a risk of permanently damaging the system Furthermore if there is no closed secondary current path the system will not be able to produce measurable output For voltage output versions this is ensured either by shorting the 4 mm banana terminals using the supplied shorting plug by connecting a DMM in low impedance current measuring mode or by connecting a measuring resistor to the 4 mm banana terminals 3 Connect the mains cord CAUTION Since the ITZ system has no mains switch the unit will be powered immediately by inserting the mains cord 4 The ITZ FLEX ULTRASTAB will now measure the current running through the transducer head On the front plate the status of the unit can be monitored using the status LED panel 140528 2 Page 13 of 32 l S _ a A 4 2 LEM Ka Introduction Main features The ITZ FLEX ULTRASTAB is a high precision current measuring device based on the Flux gate principle It can measure current in both the DC and AC domain The instrument can be configured in a variety of ways to suit the user s demands Amongst the ITZ FLEX ULTRASTAB main features are e Current or voltage output e Input range from 0 to 24000 A e Status signals for interfacing with other equipment The current measuring range is configurable depending on the transducer head Standard transducer heads ITZ FLEX ULTRASTAB can be delivered with the following tra
10. STATEMENT LEM s Warranty 5 Year Warranty on LEM Transducers We design and manufacture high quality and highly reliable products for our customers all over the world We have delivered several million current and voltage transducers since 1972 and most of them are still being used today for traction vehicles industrial motor drives UPS systems and many other applications requiring high quality standards The LEM 5 year warranty applies to all LEM transducers and is valid in addition to the legal warranty The warranty granted on LEM transducers is for a period of 5 years 60 months from the date of their delivery not applicable to EM4T amp EM4TII amp TEMA4T amp LEMABOX amp LZQJ products and automotive transducers where the warranty period is of 2 years During this period LEM shall replace or repair all defective parts at its cost provided the defect is due to defective material or workmanship Additional claims as well as claims for the compensation of damages which do not occur on the delivered material itself are not covered by this warranty All defects must be notified to LEM immediately and faulty material must be returned to the factory along with a description of the defect Warranty repairs and or replacements are carried out at LEM s discretion The customer bears the transport costs An extension of the warranty period following repairs undertaken under warranty cannot be granted The warran
11. ary current two cases appear Low frequency range DC 1 6 Hz over current slow In this case the over current trip level is set to 120 of I pn pc 140528 2 Page 26 of 32 The secondary current is tracked until the primary AC peak exceeds this trip level Then the rack electronics shut down the measuring circuit and wait until the primary AC peak becomes lower than the set trip level High frequency range 1 6 Hz 1 6 KHz over current fast In this case the over current trip level is set to 160 of I pn pc The secondary current is tracked until the primary AC peak exceeds this trip level Then the rack electronics shut down the measuring circuit and wait until the primary AC peak becomes lower than the set trip level The DC 1 6 KHz characteristics of the over current trip level with a sine wave primary AC is shown in the following table Primary current frequency Hz Typical over current trip level to detect over current state DC 0Hz 120 of PN pc 0 2 122 of PN pc 0 5 126 of PN pc 1 130 of PN pc 1 5 140 of lpn pc 2 147 of lpn pc 5 157 of PN pc 50 160 of PN DC 800 170 of PN pc 1600 186 of PN DC Under these conditions The signal Status contact between Pin 4 C and Pin 9 E switches off this signal becomes open no current from collector to emitter to indicate that the unit is not The green Led located on the front panel sw
12. ccnnnnocccnnononncnnnnanncnnnn rn rnnnnn nn 29 13 4 Connecting to an external burden resistor current OUtDUl ooooiiininnnnnnnnnnnconnonerrnnccnarncnn 30 13 5 Connecting the ITZ FLEX ULTRASTAB to a DMM or high impedance amplifier voltage output 30 14 Theory Of Operation conil id 31 14 1 Basic principle of ITZ FLEX ULTRASTAB current transducers n 31 15 MANSON rd dea 32 140528 2 Page 2 of 32 s LEM CIN LIST OF FIGURES Figure 1 System overview for Current Output cccceececeeeeeeeeeeeeaeeceeeeceaeeeeaaeeeeeeeseaeeesaaeeseaaeeeeneeeaas 11 Figure 2 System overview for Voltage OUtpPUt ccoconocccincccconcccnonncononnnononcnnncnnnnnn nano r aran rnn rca ranma 11 Figure 3 Front panel of electronics TackK oocoonnccccnnnnccccnnonccncnnonocnnnnnnocnnnnnnecnnnnnnn cnn cnn cnn rnnne cnn nana cnn 17 Figure 4 Back panel of electronic rack osiossa nasini annan RAA NNN ANER 18 Figure 5 Analog out connector PIMOUt yvmviinico ca Ataca ee 23 Figure 6 Wiring schematics to current measuring device cocoonoccccnnnocccccononcncnnnoncncnnnonccnnnnnncnccnnancncnnns 29 Figure 7 Wiring schematics to external burden resistor ooooocccoonoccccnonocccccononccccnnancncnnnonccnnnnnncccnnnancncinns 30 Figure 8 Wiring schematics to high impedance l02d ooooonoccccnnoccccnonoccccnanoncncnonancccnnnnncnnnnnn nc nccnnancncnns 30 Figure 9 Block diagram showing the zero flux detector principle oonoonicnnnninnninnconnonocnocnnccnnarnnn
13. current Due to a balanced zero flux detector principle the output noise level is extremely low by nature and a resolution on the order of 2 x 10 is achieved Below is shown a block diagram of the zero flux detector principle L3 Compensation Ip Current L4 Core3 Core2 Core1 Figure 9 Block diagram showing the zero flux detector principle The transducer head core1 is the basic body structure The core2 and core3 are the flux detectors coupled to the zero flux detector circuitry by means of the coils L1 and L2 Coils L1 and L2 are coupled in parallel or series depending on the model with opposite phase to reduce any unwanted flux generated in core 1 eufis 10143 9A Zero Flux Detector Page 31 of 32 With primary current Ip flowing through primary winding L4 a magnetic flux will be generated in the body structure and detected by the detector cores An error signal will be generated controlling the amplifier A1 to drive a current through the compensation winding L3 When counterbalance is obtained i e zero flux is re established the compensation current multiplied by the number of turns in winding L3 is a true representation of the instantaneous primary current Ip The zero flux detector circuitry operates from true DC to about 1 Hz For higher frequencies the AC pick up winding L5 performs as a feedback error signal via the amplifier A3 which widens the active bandwidth of th
14. e transducer to more than 1 kHz Above 1 KHz the transducer operates as a passive current transformer with its 3 GB limit varying from 2 kHz to 500 kHz depending on the size and construction of the head 15 Maintenance The ITZ FLEX ULTRASTAB with current output does not require any maintenance under normal operation except for the offset adjustment explained in section 6 The ITZ FLEX ULTRASTAB with voltage output requires offset adjustment as described in section 6 The system is a calibrated entity that should be recalibrated every 2 years to ensure the calibration level of the system To get your ITZ FLEX ULTRASTAB recalibrated we recommend shipping it to LEM Switzerland S A If the unit needs service please contact LEM Switzerland S A our local sales representative 140528 2 Page 32 of 32
15. e of the 2 mounting screws before mounting the head Installation Establish the ground connection see section 5 3 Mount the provided connection cable between the ITZ FLEX ULTRASTAB electronics and transducer head Connect the Analog Output Cable as described in section 13 4 and 13 5 Check that all cables terminated in a plug are correctly installed and that the lock screws are tightened firmly 5 Connect the supplied power cord to the IEC inlet on the unit to turn it on Po o N The transducer head and electronics can be installed with a transducer head connecting cable of 30 meters maximum 140528 2 Page 21 of 32 l S A O 6 1 LEM Offset adjustment The ITZ FLEX ULTRASTAB should occasionally have a current offset adjustment made to ensure the highest accuracy All ITZ FLEX ULTRASTAB are offset adjusted with the accompanying transducer head prior to shipment from the factory In case the ITZ FLEX ULTRASTAB system has been recalibrated or serviced and as a minimum after half a year of operation it is advisable to perform an offset adjustment with the selected transducer head connected prior to any measurement in order to achieve the highest accuracy Adjusting the current offset To adjust the ITZ FLEX ULTRASTAB please follow these steps 1 Connect a DMM capable of measuring micro amps pA to the Analog output port using the current output adaptor cable 2 Connect the mains cord to the IEC
16. ead and the secondary winding is the compensation winding of the transducer head The ratio between these two windings defines the current conversion ratio Ky of the system The smaller transducer heads come with a programming option As the nominal output current 1 2 or 3 A is fixed defined by the transducer head and the maximum input current py can be changed using a programming plug the current conversion ratio can be changed enabling the user to program the system to many different maximum input currents 140528 2 Page 15 of 32 Example A system with an ITZ 2000 50 PR transducer head programmed to 1500 A will produce 1 A when the primary current is 1500 A The current conversion ratio of the system is then 1A 1 Ky 1500A 1500 When a system is equipped with a VOM the output current will be converted to a voltage The maximum nominal output voltage Vs is fixed at 10 V Thus the sensitivity G from the example above can be found as 10Y 1 1500A 150 140528 2 Page 16 of 32 uz ans ZINN 4 6 Front O ITZ ULTRASTAB gt 0 E O w o m LEM O Figure 3 Front panel of electronics rack On the front of the ITZ FLEX ULTRASTAB there is an LED indicator panel POWER This LED is lit Blue when the unit is on ACTIVE This LED is lit Yellow when the transducer output is active with p higher than approximately 1 of nominal full scale output HIGH Ip This LED is lit Yellow
17. ein ae eae ee ete 20 5 1 Mounting requirements for the electronics unit ecccecceeecee ee tceeeeeeeeee ee teeeeeteteneeeeeteeeaeeeenenaees 20 5 2 Mounting requirements for the transducer HCAS ccccceeecceeeeeeee ee teeeeeeeteeeeeeeeneeaeeetenaaees 20 5 3 Grounding the transducer NCA cccccccceeceececeeeeeceaeeeeaaececeeeseaeeesaaeseeaeeseeeeescaeeesaeeseaeeseaees 21 5 4 VASTANAUOM ara Ed 21 6 Offset adjusiIMeONt ciar totales ode 22 6 1 Adjusting the Current olSet uusiakin talle ll cdta 22 Te MODO Svetlana tl ande E 23 7 1 Analog OUECONNOCIO Firmas tl aaa Aa E Eiaa 23 7 2 4 mm Banana Current Output terminals cccccccccceeecceceecee tees tetas eeeaee teense teaeeeeaeeeeeeseneeees 23 7 3 Status InterlOCk CONNECT ccccccececceeceeceeeececeeecaeeeeaaeeeeneeseeeecaaeeeeaaeseeaeeeeeeesiaeeeeaeseneeesas 24 8 Absolute maximum ranga suicida e tenets 26 9 Sweep function during overload status ooomcccnnnnninnnnnnncccnnccnnnonnnnnccnnncnnnnnn anar nn nn nn ranas 26 10 Thermal proteccionista a 26 11 Over current protection Electrical specifications ooooonnnnninnidninnnnnnnnnnnnconnncccnrccnncrann arranca 26 12 Transducer head Connector cconcccccnnnocccnnoncconnnnn cnn 28 13 A ts dinnada a a ie dinaa ida 28 13 1 Switching ON POWE momcicccnnncnnncinnccn cnn 28 13 2 Using the ITZ FLEX ULTRASTAB in Current mode eee reer esenee rere nees 28 13 3 Connecting directly to a current measuring device ooonoocccnnnnc
18. ent at pins 7 and 8 IMPORTANT The sense pins Vs High Sense on pin 4 and 12 and Vs Low Sense on pin 7 and 14 must be connected to Vs High Out and Vs Low Out respectively 4 mm Banana Current Output terminals Two standard 4mm banana jacks are available for easy connection to a low impedance current measuring DMM N CAUTION These terminals should be shorted when not in use by use of the supplied shorter plug IMPORTANT The ITZ system is tested for EMI conformance against industrial standards Use of the unshielded 4mm banana current output port can be critical under circumstances with a high level of external disturbance 140528 2 Page 23 of 32 7 3 Status Interlock connector All signals on the Status Interlock port are optically isolated Photo couplers type floating Collector and Emitter Four signals are present on the port each having two dedicated floating pins in the SUBD9 Male connector Collector C and Emitter E SUBD9 Pin SUBD9 Pin OVERLOAD gt gt SUBD9 Pin ACTIVE vv SUBD9 Pin 1 5 o00o0oo O O SUBD9 Pin SUBD Pin gt High Ip gt STATUS gt gt SUBD9 Pin SUBD Pin SUBDS Pin Not Connected 5 Depending on how each signal is wired It can be Active Low or Active High as shown below Status Interlock port Wiring Uc Diagram B DC Diagram A Uc DC Ae Power Supply SUBD9 Pin SUBD9 Pin Vout gt gt
19. gure 7 Wiring schematics to external burden resistor In addition to the standard current output cable of 1 5 m length a 5 m long current output cable is also available Both cables use two twisted pairs in order to reduce the resistance and are terminated in three 4 mm female banana sockets for easy connection to other equipment 13 5 Connecting the ITZ FLEX ULTRASTAB to a DMM or high impedance amplifier voltage output When connecting the ITZ FLEX ULTRASTAB to a DMM or high impedance load in voltage mode VOM installed use the connection shown below This diagram is equal to the standard voltage output cable This cable uses a single twisted pair and is terminated in three female banana sockets for easy connection to other equipment 15 pin D Sub Analog output connector D M M Vs High Sense Shielded cable Red Vs High Out i Vs Low Out Black Vs Low Sense Guard Blue Figure 8 Wiring schematics to high impedance load 140528 2 Page 30 of 32 S _ LEM ZIN 14 Theory of operation 14 1 140528 2 Basic principle of ITZ FLEX ULTRASTAB current transducers The ITZ FLEX ULTRASTAB current transducers are delivered in a series covering galvanic isolated measurements of currents from DC to 500 kHz ranging from 40 A to 24 KA These precision current transducers use a zero flux detector principle controlling a compensation current which counterbalances the ampere turns generated by the primary
20. he damage should be forwarded to LEM Switzerland S A or our local representative immediately upon receiving Upon receipt of this report LEM Switzerland S A will forward instructions concerning the repair replacement or return shipment Please include the Type No Serial No and Order No for the ITZ FLEX ULTRASTAB on any communication with LEM Switzerland S A or our local representative 140528 2 Page 6 of 32 s LEM ie aN ZHAN GENERAL SPECIFICATIONS FOR RACK ELECTRONICS Electrical Data MAINS INPUT Mains Input 100 240 V AC 50 60 Hz IEC type inlet socket Fuses 2 5 AT 240 V AC Internal fuses not user replaceable Electrical data ANALOG OUTPUT PORT Full scale output current 1 A 20r 3A S and SB versions Full scale output voltage 10V SB versions Output impedance lt 1 Ohm SB versions Electrical data STATUS INTERLOCK PORT Max collector emitter 60 V voltage off state Max reverse collector 5V emitter voltage off state Max collector emitter 10 mA current on state On state saturation lt 0 2V collector emitter voltage Physical data Electronics rack Dimensions 482x88x430 mm WxHxD including handles and connectors Weight 8 4 kg 9 2 10 0kg Value for 600 5000 A systems 10 kA 16 kA 24 kA systems Operating conditions Temperature 10 40 C Relative humidity 20 80 RH Cooling Internal fan
21. imary current Ip exceeds a trip level such that the fluxgate detector becomes completely saturated and consequently the transducer will switch from normal operation to overload mode This trip level is guaranteed to be greater than 110 of lpn pc and its actual value depends on operation conditions such as temperature and measuring resistance When this happens the ITZ rack electronics will automatically begin to sweep in order to lock on to the primary current again and the measuring can resume when the primary current returns in the nominal range between I pn pc and I pn oc In sweep mode the output current signal will be a slope between 1 A 2 A or 3 A depending on the transducer head 10 Thermal protection The ITZ FLEX ULTRASTAB series has thermal shutdown circuitry that protects the electronics from damage The thermal protection circuitry disables the measuring circuit when the rack electronics temperature reaches approximately 65 C and allows the transducer to cool When the rack electronics temperature cools to approximately 60 C the measuring circuit is automatically re enabled and the status LED is again lit 11 Over current protection Electrical specifications The Over current occurs when the primary current exceeds 120 of I pn pc To detect the over current with primary AC the secondary current is full wave rectified and is time averaged by a low pass filter Depending on the frequency range of the prim
22. inlet 3 Wait for approx 15 minutes after powering up the system for the unit to stabilize thermally 4 Locate the offset trim hole on the front of the electronics unit lower left corner 5 Use a trim screwdriver to adjust the offset until the current is as close to zero as possible 140528 2 Page 22 of 32 7 2 LEM 1 0 ports Analog Out connector Normally an appropriate output cable should be used depending on whether your system has current or voltage output It is also possible to configure your own output cable bearing the following description in mind The female 15 pin D Sub Analog out connector contains the following signals Vs Low Sense Figure 5 Analog out Vs Low Out connector pinout Current out 10 Current out 11 Current out 12 Vs High Sense 13 Vs High Out 14 Vs Low Sense 15 Vs Low Out 1 Current return 2 Current return 8 1 3 Current return 4 Vs High Sense O O 5 Vs High Out 6 Ground 15 9 7 8 9 When using the ITZ FLEX ULTRASTAB in current out mode no VOM installed only pin 1 2 3 and 9 10 11 should be used e Pin9 10 11 Is the current output from the ITZ FLEX ULTRASTAB e Pin 1 2 3 Current return path When using the ITZ FLEX ULTRASTAB in voltage out mode VOM installed pin 1 9 pin 2 10 and pin 3 11 must be shorted This will loop the current output to the VOM The output signal Vs High is then present at pins 4 and 5 and the output signal Vs Low is then pres
23. ion provided by the equipment may be impaired 2 1 Terms and symbols These terms and symbols may appear in this manual or on the product A WARNING Warning statement identifying condition or practices that could result in human injury or loss of life CAUTION Caution statement identifying conditions or practices that could result in damage to the product Protective Ground Conductor Terminal A DANGER High Voltages 2 2 General use and wear Avoid severe impacts or rough handling that could damage the instrument Use electrostatic discharge precautions while handling and making connections to the instrument Do not place bare or unterminated wires into the connectors of the instrument only mating connectors and adapters Do not block or obstruct the ventilation openings on the side panels and over the heat sink CAUTION Do not place any heavy objects on the instrument 2 3 Grounding considerations To avoid the risk of electrical shock it is mandatory to observe proper grounding practices conductor must be connected to earth ground All transducer heads must be connected to earth ground as described in section 5 3 WARNING To avoid electrical shock the power cord protective grounding Failure to establish a functional ground connection to earth may lead to hazardous errors and cause malfunction and or measurement inaccuracies 2 4 Fuses WARNING The unit has no user replaceable fuses
24. is a risk of permanently damaging the system Furthermore if there is no closed secondary current path the system will not be able to produce measurable output The secondary current path is closed either by shorting the 4mm banana terminals or by connecting a series measuring resistor at these outputs Using standard 4 mm banana test leads connect the red wire on the Current Output Adaptor to the current input terminal on the DMM and the black wire of the adaptor to the common terminal on the DMM Set the DMM to measure DC current in a range greater than e 1 A for ITZ 600 SPR SBPR and ITZ 2000 SPR SBPR e 2 A for ITZ 2000 S SB ITZ 5000 S SB ITZ 10000 S SB and ITZ 16000 S SB e 3 A for ITZ 24000 S SB IMPORTANT Refer to page 23 for EMC precautions for the 4 mm banana terminal port 140528 2 Page 12 of 32 If your unit has a voltage output SB or SBPR versions Connect the Analog Output Cable to the Analog Output Port Using standard 4 mm banana test leads connect the red wire of the cable to the positive terminal on the DMM and the black wire to the common terminal Set the DMM to measure DC AC voltage in a range greater then 10 V The blue wire of the cable is connected to the cable shield and to chassis ground Make sure the supplied shorting plug is installed on the 4 mm banana terminals as described in the previous section CAUTION It is MANDATORY that the secondary current path remains CL
25. itches off fault state The transducer is protected against damage that the over current primary AC may cause to the electronics The transducer will automatically starts again to work when the primary AC peak becomes lower than the trip level value indicated in the table above 140528 2 Page 27 of 32 DM gt 12 13 13 1 13 2 LEM y Transducer head connector The circular multi pin bayonet style connector is used to connect the transducer head to the electronics It is critical to ensure the signal integrity in this I O interface in order to maintain the very high performance level this system can achieve As a consequence pins in this I O interface are not available for the user Operating instructions Switching on power A CAUTION Before switching on the power make sure that there is no current running through the transducer head IMPORTANT The ITZ rack electronics has no MAINS switch To power off the unit disconnect the mains plug at the power inlet Before powering up the ITZ FLEX ULTRASTAB be sure to check the following 1 Check that all cables terminated in a plug are correctly installed and that the lock screws are tightened firmly 2 Check that the system is properly grounded through the mains connection and that the transducer head is grounded according to the directions given in section 5 3 3 Connect the power cord to the mains inlet 4 The ITZ FLEX ULTRASTAB will now run through its powe
26. nsducer heads 1 ITZ 600 25 PR programmable in steps of 20 A from 40 A to 620 A Conversion ratio default of 1 600 Nominal secondary current 1 A Aperture Y 25 mm 2 ITZ 2000 50 PR programmable in steps of 125 A from 125 A to 2000 A Conversion ratio default of 1 2000 Nominal secondary current of 1 A Aperture 50 mm 3 ITZ 2000 50 non programmable wide bandwidth Conversion ratio of 1 1000 Nominal secondary current of 2 A Aperture 50 mm 4 ITZ 5000 140 non programmable Conversion ratio of 1 2500 Nominal secondary current of 2 A Aperture Y 140 mm 5 ITZ 10000 100 non programmable Conversion ratio of 1 5000 Nominal secondary current of 2 A Aperture 100 mm 6 ITZ 16000 150 non programmable Conversion ratio of 1 8000 Nominal secondary current of 2 A Aperture 150 mm 7 ITZ 24000 150 non programmable Conversion ratio of 1 8000 Nominal secondary current of 3 A Aperture 150 mm Please note that systems are always downwards compatible in the sense that a smaller transducer head can be used with the rack electronics from a larger system ie if you have purchased an ITZ 10000 S system you will be able to use a 600 A transducer head with your rack electronics without any limitations The system will adapt itself to this 140528 2 Page 14 of 32 4 3 4 4 4 5 However the system is not generally upwards compatible ie you will not generally be able to use a larger head with
27. r up sequence After a few second the unit is ready and the status of the unit can be seen on the front panel LEDs 5 Switch primary current on The ACTIVE LED will turn on Using the ITZ FLEX ULTRASTAB in current mode When using the ITZ FLEX ULTRASTAB without a VOM installed there are essentially two ways to measure the output It can either be connected to a current measuring device or to an external burden resistor 140528 2 Page 28 of 32 13 3 Connecting directly to a current measuring device Connecting the ITZ FLEX ULTRASTAB directly to a current measuring device like a DMM or a power analyser can easily be done from the current output port with two standard 4 mm banana plugs Take care that both terminals are floating relative to ground The red wire carries the output current while the black is the current return path Simply connect these two wires to your current measuring device using standard laboratory test leads with 4 mm banana terminals 4mm Banana Terminals Current out Standard test cables Current return Figure 6 Wiring schematics to current measuring device 140528 2 Page 29 of 32 13 4 Connecting to an external burden resistor current output If an external burden resistor is to be connected to the ITZ FLEX ULTRASTAB the connection shown below should be used 15 pin D Sub Analog output connector Shielded cable Current out Current return Guard Blue Fi
28. rnnns 31 LIST OF TABLES Table 1 General specifications for rack electroniCS ooonnccccndnnnncnnnccnonccccnncnn aran na nann conc cra rana rana 7 DOCUMENT INFORMATION 05 01 2012 Creation of user manual Version 0 06 02 2013 Replaced Manual title by user guide Version 1 title page 1 Replaced LEM Danfisik by LEM Switzerland Added picture page 11 Modified some pictures 28 05 2014 Updated completely according to the Version 2 datasheets 140528 2 Page 3 of 32 SLEM ays INTRODUCTION Congratulations with your purchase of LEM ITZ FLEX ULTRASTAB The ITZ FLEX ULTRASTAB system provides a flexible yet user friendly platform for use in laboratory test facility and industrial applications where the highest performance flux gate current sensing is needed The platform offers full scale current sensing from 600 A and up to 24000 A by utilizing a broad range of compatible current measuring heads Please read this user guide carefully before use It contains information on how to set up and use the ITZ FLEX ULTRASTAB and how to build an ultrahigh precision system In case of unanswered questions do not hesitate to contact either LEM Switzerland S A or our local distributor directly IMPORTANT LEM Switzerland S A will not be held responsible for use of the ITZ FLEX ULTRASTAB unit under conditions and or in application setups not supported by the information in this user guide 140528 2 Page 4 of 32 WARRANTY
29. the rack electronics from a smaller system If you want to expand the measuring range of your system by using a larger transducer head please consult your local LEM SA Sales representative to obtain information on existing options and cost Custom transducer heads For current measurement of 10 kA and beyond certain customizing may be required Your local LEM SA Sales representative will be able to assist you with custom requirements for conversion ratio programmability options etc Voltage output module In addition to the different transducer heads a system can also be equipped with a VOM Voltage Output Module This module will convert the output current to an output voltage of 10 V nominal full scale Two types VOMs are available one for each nominal output current range 1 or 2 A In all cases the output current is also available for monitoring either by the 4 mm banana jacks on the back panel or with the Analog Output Cable If you have ordered your system with the B option eg ITZ 5000 SB it already has a VOM installed If your system was ordered as a standard current output system you can have a VOM retrofitted Please contact your local LEM SA Sales representative to obtain information on existing options and cost Current conversion ratio and programmability The system can generally be considered as a current transformer also working at DC The primary winding is the wire through the center hole of the h
30. tive Type Serial number plate Three individual S Ns may be listed here One for the ITZ electronics one for the matching head and one optional for the installed VOM Transducer head Connection to the transducer head CAUTION The secondary current path must be closed with the system powered This includes both the current output in the Analog Out connector and the 4 mm banana terminals if one of them is used the other must be shorted with the supplied Short plug CURRENT ANALOG OUT Short plug Short plug 94 81 89 990 0 7 Analog out Output connection to a DMM or other equipment 15 pin D Sub female UNC 4 40 screw lock Current Secondary current output Monitor Voltage output with a low precision voltage output derived from the secondary current Output is 1 V full scale Status Interlock signal outputs 9 pin D Sub male UNC 4 40 screw lock Option A B These positions are for future expansion or customization Page 18 of 32 gt LEM ZIN Ventilation exit The main heat sink has an airflow exit centered on the back panel Inlet holes are on the side panel of the chassis A CAUTION Do not block the airflow to from the unit 4 8 Transducer head The transducer head is connected to the electronics rack using a dedicated cable with a multi pin bayonet style connector Various cable lengths are available If the transducer head is programmable it also has a 25 pin D Sub male U
31. ty becomes invalid if the buyer has modified or repaired or has had repaired by a third party the material without LEM s written consent The warranty does not cover any damage caused by incorrect conditions of use and cases of force majeure No responsibility will apply except legal requirements regarding product liability The warranty explicitly excludes all claims exceeding the above conditions LEM warranty application date April 1 2008 Frangois Gabella President amp CEO LEM 140528 2 Page 5 of 32 SLEM amne RECEIVING AND UNPACKING The shipping material and the ITZ FLEX ULTRASTAB should be thoroughly inspected for signs of obvious physical damage immediately upon receipt All materials in the package should be checked against the enclosed packing list and the list of standard delivery below LEM Switzerland S A will not be responsible for any shortages unless notified no later than 14 days after receiving The LEM ITZ FLEX ULTRASTAB package should contain 19 inch rack mount ITZ FLEX ULTRASTAB electronics Transducer head depending on nominal current range European Schuko and US mains cable with three pin IEC female connector Cable for connecting head and rack electronics Analog output cable Current short plug and analog out short plug Final manufacturing test check list IN CASE OF DAMAGE If the equipment is damaged in any way a claim should be filed with the shipping agent and a full report of t
32. y 1 of nominal full scale output STATUS A lt 0 2V_ When the unit status is OK Normal operation Uc When the unit status is not OK Supply fault over temperature conditions and Current overloads or No detected head B Uc When the unit status is OK Normal operation lt 0 2V When the unit status is not OK Supply fault over temperature conditions Current overloads or Transducer head not detected The power supply voltage Uc must be between 4 V and 60 V DC and the resistor value must be chosen between a minimum value Amin and a maximum value Rmax calculated by using the following equations U U Rmin KQ and Rmax KQ Some recommended standard values are given in the following table Power supply Voltage Uc Rmin KQ Rmax KQ R Standard Values 5 5 V 5 1 5 3 1 8 kO or 2 2 kO 12 V 5 3 5 7 4 7 KQ or 6 8 kQ 24 V 5 7 14 10 kO or 12 kO 140528 2 Page 25 of 32 gt LEM 2 8 Absolute maximum ratings Symbol Description Specification Unit Uc Power supply Voltage 60 V VoE off Maximum Off state Collector Emitter Voltage 60 V Voce off Maximum reverse Off state Collector Emitter Voltage 5 V lce Maximum ON state Collector Emitter Current 10 mA Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the status interlock signal outputs 9 Sweep function during overload status The overload occurs when the pr

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