ITZ Ultrastab Manual
Contents
1. LEM Danfysik A S Hassellunden 16 DK 2765 Smoerum DENMARK O5January2012 Version 0 Page 8 of 29 sine Zo s NO Usage precautions and recommendations 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 protection 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 WARNING Warning statement identifying condition or practices that could result in human injury or loss of life A CAUTION Caution statement identifying conditions or practices that could result in damage to the product A DANGER High Voltages Protective Ground Conductor Terminal 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 A2. N Transducer head Connection to the transducer head Analog out Output connection to a DMM or other equipment Current Secondary current output a powered This includes both the current output in the Analog Out connector and the 4 mm banana terminals if the latter are not used please connect the supplied shorting plug CAUTION The secondary current path must be closed with the system 6 Monitor Voltage output with a low precision voltage output derived from the secondary current Output is 1 V full scale 7 Status Interlock signal outputs 8 Option A B These positions are for future expansion or customization 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 CAUTION Do not block the airflow to from the unit O5January2012 Version 0 Page 18 of 29 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 lf the transducer head is programmable it also has a D sub 25 pin male connector This connector is used with suitable programming plugs accessory for further information please refer to section 4 5 for further information on programmability CAUTION A programming plug must be connected to the programming port of a programmable head when the system is powered O5January2012 Version 0 P
3. Aperture 50 mm 4 ITZ 5000 140 non programmable Turns ratio of 2500 1 Nominal secondary current of 2 A Aperture 140 mm 5 ITZ 10000 100 non programmable Turns ratio of 5000 1 Nominal secondary current of 2 A Aperture 8100 mm 6 ITZ 16000 150 non programmable Turns ratio of 8000 1 Nominal secondary of 2 A Aperture 150 mm 7 ITZ 24000 150 non programmable Turns ratio of 8000 1 Nominal secondary 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 O5January2012 Version 0 Page 14 of 29 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 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 turns ratio programmab
4. 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 warranty 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 Fran ois Gabella P
5. EC type inlet socket Fuses 2 5 AT 240 V AC Internal fuses not user replaceable Electrical data ANALOG OUTPUT PORT a meras SO To voltage off state peiie O emitter voltage off state wa e o current on state ee A collector emitter voltage a Dimensions Weight 8 4 kg 9 2 10 0kg Value for 600 5000 A systems 10 kA 16 kA 24 kA systems OOOO I 10 40 deg C SS 20 80 RH Od Cooling i Intermal fan EEE Storage conditions 20 85 deg C Od 20 80 RH Table 1 General specifications for rack electronics O5January2012 Version 0 Page 7 of 29 S 4 LEM ZIN y 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
6. connect these two wires to your current measuring device using standard laboratory test leads with 4mm banana terminals 4mm Banana Terminals DMM Current output Standard testcables Current return Figure 6 Wiring schematics to current measuring device O5January2012 Version 0 Page 25 of 29 Connecting to an external burden resistor lf an external burden resistor is to be connected to the ITZ ULTRASTAB the connection shown below should be used Dsub15 Analog Output Port DMM Current output Current return Chassis Guard Figure 7 Wiring schematics to external burden resistor 8 5 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 Connecting the ITZ ULTRASTAB to a DMM or high impedance amplifier When connecting the ITZ 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 Dsub15 Analog Output Port DMM Voltage sense high Shielded cable Voltage output high Voltage output low Voltage sense low Chassis Guard Figure 8 Wiring schematics to
7. gt lt LEM ITZ ULTRASTAB USER MANUAL Page 1 of 29 O5January2012 Version 0 4 LEM Fns TABLE OF CONTENTS TABLE OF CONTENT o oeie E E ee eee ee A 1 HUST OF C10 S a gt penn ene ene Ree eee ante ee ere ee eee ee eee 3 HST OF TABLE S eee eee ene en nme E eee ee eee nee eee eee 3 DOCUMENT INFORMATION cccccccsseeeeceeceeeceeeeeeeceeeeeeaeeeseeeeeeeeseaeaseeceeeeesseeaaeeeeeeessaaaeeeeeeeesssuaasagsess 3 INTRODUC TON cscs teeter pore os seein cea ecto jantoner onto cave EE E orseew onauuncasaeeesanmeneecss 4 WARRANTY STATEMENT seisseen pennet arene EEE EE E EEOAE EEEE 5 RECEIVING AND UNPAGCKING spisanie E E EE E R a 6 Gem A ire ad Oe 7 0 OC se ea ee a E a aE aa 7 1 Compliance with reQulations ccccccccccccccccsssseeeceeeeeeeeeeseeceeeeeesseeaseeceeeeseesaaeseeeeeessueeaeeeeeeeessaaegesss 8 2 Usage precautions and recOMMeNndatiOns cccccccccseeecceecseeeecececaeeeeceeesseseeeeeeeeeeeeeesaaseeesessaaess 9 2 1 MEQ W ITVS ING SYA ONS ashore E EA E E E E E 9 2 2 CNIS Tal ISS ANG WAN gasses te aerated E E E E E E E N 9 2 3 Grounding CC 9S OCIA ONS rae tacts cssartute ache dinaeiseciemncbancesistentehentete dea maemaceeee ee tennnteeic 9 2 4 PTS OS rete desi ste ache a erences esr E ya pe re DE AEE etn dose toate E ET 9 2 5 FS CAIUS TON US enaren ana erences mde E E aE eE 10 3 UR e e ene ee eee ee ee ee eee 11 3 1 System OV CVO erircserastzecet as saate syfeesiac ue ees ase adiea eeersenesne aeuiet anmoe
8. high impedance load O5January2012 Version 0 Page 26 of 29 O5January2012 Version 0 LEM Theory of operation Basic principle of ITZ ULTRASTAB current transducers The ITZ ULTRASTAB current transducers are delivered in a series covering galvanic isolated measurements of currents from DC to 500 kHz ranging from 40 Ato 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 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 pa m A3 L A1 Ip L3 Compensation Current L4 Core3 VA Core2 Ca Core Figure 9 Block diagram showing the zero flux detector principle The transducer head core 1 is the basic body structure The cores 2 and 3 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 jeuBig Jo OG Zero Flux Detector Page 27 of 29 With primary current lp flowing through primary winding L4 a magnetic flux will be generated in the body structure and detected by the detector cores An error
9. 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 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 ULTRASTAB will now run through its power 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 ULTRASTAB in current mode When using the ITZ 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 Connecting directly to a current measuring device Connecting the ITZ 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
10. 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 amplifer A3 which widens the active bandwidth of the transducer to more than 10 kHz Above 10 KHz the Define CCT the transducer operates as a passive current transformer with its 3 dB limit varying from 300 KHz to 1 MHz depending on the size and construction of the head 10 Maintenance The ITZ ULTRASTAB with current output does not require any maintenance under normal operation except for the offset adjustment explained in section 6 The ITZ 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 ULTRASTAB recalibrated we recommend shipping it to LEM Danfysik A S If the unit needs service please contact LEM Danfysik A S or our local sales representative O5January2012 Version 0 Page 28 of 29 l on a LEM TN Appendix A Declaration of conformity C c Manufact
11. age 19 of 29 s LEM Installation Ol 5 1 Mounting requirements for the electronics unit The ITZ 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 oon A B which is 10 mm 15 mm Max Screw length D 10 15 C mm Transducer core Mounting plate Mounting 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 ITZ 10000 100 ITZ 16000 150 and ITZ 24000 150 These transducer heads are mounted using four M10 screws inserted into the holes on the brackets These heads may be installed in any
12. bearing the following description in mind The Analog out connector Dsub15 F contains the following signals Current return Current return Current return Vo High Sense Vo High Out Ground Vo Low Sense Vo Low Out Figure 4 Analog out connector pinout Current out 10 Current out 11 Current out 12 Vo High Sense 13 Vo High Out 14 Vo Low Sense 15 Vo Low Out eo ee a ee a When using the ITZ ULTRASTAB in current out mode no VOM installed only pin 1 2 3 and 9 10 11 should be used e Pin 9 10 11 Is the current output from the ITZ ULTRASTAB e Pin 1 2 3 Current return path When using the ITZ 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 voltage output is then present at pin 4 8 and 12 15 IMPORTANT The sense pins Vo High Sense on pin 4 and 12 and Vo Low Sense on pin 8 and 14 must be connected to Vo High Out and Vo 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 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 O5Jan
13. e 3 of 29 sine Zo s INTRODUCTION Congratulations with your purchase of LEM ITZ Ultrastab The ITZ 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 manual carefully before use It contains information on how to set up and use the ITZ Ultrastab and how to build an ultrahigh precision system In case of unanswered questions do not hesitate to contact either LEM SA or our local distributor directly IMPORTANT LEM SA will not be held responsible for use of the ITZ Ultrastab unit under conditions and or in application setups not supported by the information in this manual O5January2012 Version 0 Page 4 of 29 Ss LEM T T AAN WARRANTY STATEMENT gt _ C gt Ke LL 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
14. eeasanacioc aeeaseemnuadabaneeeiaatarcesseebiencess 11 3 2 LIN ID caste teresa oases ani ae es teas waar A E E E E E E E E 11 MIN SGT Io ces cee tesserae ereeciaecrsncn creer E E E E ne oars eon eleva E E EE 14 4 1 Mah TONU OS operere E e E E E EEES 14 4 2 Standard transducer headS cccccccccsseccccccececceaeeesecceeeecaueseeeeeeeesaaeseeeeeesessaeaaeeeeeeeessaaaseeseees 14 4 3 Custom transducer heads 1 ccccccccceecceeeeeeeceeeeeceaaeeeeeceeeseaeeeeeeeeeeeseseaaaseeeeeeessaaaaeeeeeeesessaaeses 15 4 4 Voltage output MOQUIE cccccsecccccccceeeeeceecsaeeeeeeesaaeeeeeesaaaeeeeeesseaaeeeeesaaaeeeessaaeseeeessaeesensssaaess 15 4 5 Current transfer ratio and PFOGFAIMIMADIIIty ccccccccccccccecsnceeeeeecaeeeeeeeeaeeeeeeessaeeeeesesseeeeeenaas 15 4 6 FOIA ssc ae sears E EEEE E EE E E E E 17 4 7 POA a E E E eee ee 18 4 8 TUCET OA a E E E E E E E eee 19 S aai E E E E 20 5 1 Mounting requirements for the electronics unit cccccseccccccseseeecaeeeeecaeeeeeeseueeeeaueeeessaneeesaanees 20 5 2 Mounting requirements for the transducer N AS cccccsecccccneeeeecaeeeeeecueseeesaaeeesauseeesaanees 20 5 3 Grounding the transducer NCA ccccccccccccsseeecececaeeeecececauseeeeensaueeceessaaeeeeesssageeeeessaaseeeessaas 21 5 4 DENS OI gers ese E ioe aero E sa Gignac de san sonatas top ese A E E A 21 C OTSSL AGUSTIN CNW seesinane EEA OEE EAEE E EE EENEG 22 6 1 Adjusting the current offset cesiesicsctcewseniecineawapduancunistet
15. ility 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 Three types VOMs are available one for each nominal output current range 1 2 or 3 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 transfer 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 head and the secondary winding is the compensation winding of the transducer head The ratio between these two windings defines the current transfer ratio N of the system The smaller transducer heads come with a programming option As the nominal output current 7 is fixed defined by the transducer head and the maximum input current J can be changed using a programming plug the current transfer ratio can be changed enabling the user to program the s
16. ll transducer heads must be connected to earth ground as described in section 5 3 i 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 In the event that fuses need AN replacement please consult your local LEM Sales representative Please include Type and Serial no with all communication with LEM SA or the local representative O5January2012 Version 0 Page 9 of 29 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 is subject to primary current O5January2012 Version 0 Page 10 of 29 S lt LEM 71 nS 3 Quick start 3 1 System overview IMPORTANT The GREEN secondary current path must be closed at all times when MAINS power ts applied lf only one of the two current output ports are in use the other MUST be shorted with the appropriate shorting plug Analog Mains Output 100 240V 50 60Hz Transducer Status Head Figure 1 System overview 3 2 Setting up To quickly get your new ITZ ULTRASTAB system operational follow the instruc
17. m 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 AN CAUTION Please refer to section 6 for instructions on how to adjust offset correctly O5January2012 Version 0 Page 17 of 29 TRANSDUCER HEAD TYPE ITZ Ultrastab TET OPTION A OPTION B LEM Danfysik A S TOM Hassellunden 16 a DK 2765 Smoerum www lem com all j efore Hse cover MAINS INPUT 100 240 VAC STATUS MONITOR CURRENT ANALOG OUT 50 60 HZ 300W MAX Figure 3 Back panel of electronic rack All connections on the ITZ ULTRASTAB are located on the rear of the unit 1 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 SA sales representative 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
18. minals 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 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 O5January2012 Version 0 Page 13 of 29 gt lt LEM ZIN i gt 4 2 Introduction Main features The ITZ 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 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 ULTRASTAB can be delivered with the following transducer heads 1 ITZ 600 25 PR programmable please refer to section 0 in steps of 20 A from 40 A to 620 A Turns ratio default of 600 1 Nominal secondary current 1 A Aperture 25 mm 2 ITZ 2000 50 PR programmable in steps of 125 A from 125 A to 2000 A Turns ratio default of 2000 1 Nominal secondary current of 1 A Aperture 50 mm 3 ITZ 2000 50 non programmable wide bandwiath Turns ratio of 1000 1 Nominal secondary current of 2 A
19. nihune cde ced acetienadsoedusteetvewinsioe a a 22 fs WODO ene E E E tonuthtnctionakcanttwsdamentonedncamaansihe 23 7 1 Analog OUT COMMS CI ON serssrirsonisent nanana ENEE a E OEE AEE EE EAE 23 7 2 4mm Banana Current Output terminals 0ccccccccccseeeeeeeccceeecaaeeseeceeeeesuaeseeeeeeesesssaaeneeeeees 23 7 3 AUS ETO COMMIS C1 OF sce octet cnc apace cee ae ctscies ett E E ene cease nenceelauaees 24 7 4 TANS OUNCE HE AG COMM CC OM asec cyclase cha ao ase toneneaeen as tanec aac astan E 24 Pin 8 Pering Blac 6 61d 9 eee nn eee ene eee mee ene one ee en ee ee eee eee eee eee 25 8 1 VIGO Ol OWE i tet tate ca cca E A R E EE eaeceneten cna conser ee 25 8 2 Using the ITZ ULTRASTAB in current MOEC ccccsccccccccsseeseeeeccaeeeeeeecaaeeeeesaaaeeeeessaaeeeeesenas 25 8 3 Connecting directly to a current measuring device ccccccccsseeeeeeeeeeeeeaaeecceeeeeeeeeaueeneseeeeneaaas 25 8 4 Connecting to an external burden resiStof cccccccseeeeccccccececeeeeeeeeeeeeeeeaaeeeeeeeeesaaaaaeeeeeeeessaaas 26 8 5 Connecting the ITZ ULTRASTAB to a DMM or high impedance AMPIIfler cccccceccceeceee 26 S TNC OOP OC UO epen E tensed ectnsseisditetarsasaressdenetouaneseedeien 27 9 1 Basic principle of ITZ ULTRASTAB Current transducers ccccccccccseeeeeeeecaeeeeeeeesaaaeeeesaaaees 27 10 EURIE E CE E AE E E E E E E EE E E E A 28 Appendix A Declaration of conformity ccccceccccesseecceeseecceeneeceeseecsesceeseuseeessaueee
20. o 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 3A for ITZ 24000 S SB IMPORTANT Refer to page 23 for EMC precautions for the 4 mm banana terminal port O5January2012 Version 0 Page 12 of 29 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 CLOSED whenever the AN 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 ter
21. onnecting cable of 30 meters maximum O5January2012 Version 0 Page 21 of 29 gt lt LEM ZIN O 6 1 Offset adjustment The ITZ ULTRASTAB should occasionally have a current offset adjustment made to ensure the highest accuracy All ITZ ULTRASTAB are offset adjusted with the accompanying transducer head prior to shipment from the factory In case the ITZ 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 ULTRASTAB please follow these steps 1 Connect a DMM capable of measuring microamps uA to the Analog Output port using the current output adaptor cable 2 Connect the mains cord to the IEC 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 O5January2012 Version 0 Page 22 of 29 sine T SHAN N 7 1 7 2 s 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
22. orientation OS5January2012 Version 0 Page 20 of 29 5 4 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 ITZ 10000 100 ITZ 16000 150 and ITZ 24000 150 A Ground wire min 1 5 mm with an 10 3 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 Installation Establish the ground connection see section 5 3 Mount the provided connection cable between the ITZ ULTRASTAB electronics and transducer head Connect the Analog Output Cable as described in section 8 3 8 6 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 Ne The transducer head and electronics can be installed with a transducer head c
23. resident amp CEO LEM O5January2012 Version 0 Page 5 of 29 ze LEM A gt RECEIVING AND UNPACKING The shipping material and the ITZ 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 SA will not be responsible for any shortages unless notified no later than 14 days after receiving The LEM ITZ Ultrastab package should contain Electronics 19 inch rack mount ITZ Ultrastab 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 Manual Calibration certificate IN CASE OF DAMAGE lf the equipment is damaged in any way a claim should be filed with the shipping agent and a full report of the damage should be forwarded to LEM SA or our local representative immediately upon receiving Upon receipt of this report LEM SA will forward instructions concerning the repair replacement or return shipment Please include the Type No Serial No and Order No for the ITZ Ultrastab on any communication with LEM SA or our local representative O5January2012 Version 0 Page 6 of 29 gt lt LEM GENERAL SPECIFICATIONS FOR RACK ELECTRONICS Electrical Data MAINS INPUT Mains Input 100 240 V AC 50 60 Hz
24. ssagseeesseseeessageeenas 29 O5January2012 Version 0 Page 2 of 29 gt lt LEM 1 S LIST OF FIGURES Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 SUI VSL secs ee acest E E E T E E EE E A E E 11 Front panel of electronics rack ccccccssscccceeeeecsesececeeseeeseaseeecsaeeecseaseeessaseeeseeeeeesesseeeeseass 17 Back panel of electronic rack cccceccccsssseeccsesececeesececceseeceaeeecsaueeecseuseesssaseeessseeesseneeesseass 18 Anal g OUT connector PINOUT vicssiiverswasananuainaceaninnnswdindvntsamndsdeunsuiswaainundvadsanaiudesteniwnbieeutuosleinixeds 23 Status Interlock connector PIN OUt ccccccccsseeseeceeeeeeeeseeeceeeeeeeeeesseeeeeeeessueaseeeeesssueaseeeseeeees 24 Wiring schematics to Current measuring device cccceceeeeceeeceeeeeeeeeeeeeeeeeeeaeeeeeeeesaaneeeeeeaas 25 Figure 7 Wiring schematics to external burden resistor cccceececcceceeeeeeeceeeeaeeeeseeceeeeeeeeeeeseeseaaaaes 26 Figure 8 Wiring schematics to high impedance lOad ccccccceeeeceeeeeeeeeeeeeeeeeeeeeeeaeeeeeeeaaaeeeeseesaaeeeees 26 Figure 9 Block diagram showing the zero flux detector PriINCIPle ccccccccessseeecceeeeeeeeeeseeeeeeeseeensees 27 LIST OF TABLES Table 1 General specifications for electronics FACK ccccccsseeeceeecaeeeeeeeeeeeeeeeeeeeaeseeeesseeeeeeeessaaeeeeeessaaess 7 DOCUMENT INFORMATION 5 01 2012 Creation of user manual O5January2012 Version 0 Pag
25. tions given below 1 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 2 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 O5January2012 Version 0 Page 11 of 29 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 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 t
26. uary2012 Version 0 Page 23 of 29 gt LEM T T IAS 7 3 Status interlock connector All signals on the Status Interlock connector are optically isolated open collector types The four signals are present on the connector each having two dedicated pins collector C and emitter E The signals are active low meaning that an active signal will draw current from collector to emitter OVERLOAD Active low when the transducer head is saturated due to excessive primary current Pin 1 C Pin 6 E HIGH lp Active low when the transducer output is active with an l higher than 105 of nominal full scale output Pin2 C Pin 7 E ACTIVE Active low when the transducer output is active with an IP higher than approximately 1 of nominal full scale output Pin3 C Pin 8 E STATUS Active low when the status of the unit is OK Pin 4 C Pin9 E Figure 5 Status Interlock connector pin out 7 4 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 O5January2012 Version 0 Page 24 of 29 5 Ti M5 LEM gt Pin 8 Operating instructions 8 1 8 2 8 3 Switching on power A CAUTION Before switching
27. urer LEM Denmark A S Hassellunden 16 DK 2765 Smoerum Denmark LEM Denmark A S hereby states compliance of Product Type no Type no Type no Type no Type no Type no Type no Type no Type no Type no Type no Type no Type no Type no to the following applicable regulatory standards EN61010 1 Safety requirements for electrical equipment for measurement control and laboratory use ITZ 600 SPR Ultrastab ITZ 600 SBPR Ultrastab ITZ 2000 5 Ultrastab ITZ 2000 SB Ultrastab ITZ 2000 SPR Ultrastab ITZ 2000 SBPR Ultrastab ITZ 5000 5 Ultrastab ITZ 5000 SB Ultrastab ITZ 10000 S Ultrastab ITZ 10000 SB Ultrastab ITZ 16000 5 Ultrastab ITZ 16000 SB Ultrastab ITZ 24000 S Ultrastab ITZ 24000 SB Ultrastab Certificate of Compliance IEC EN 61326 1 2006 EMC Emission and Immunity Furthermore is stated compliance to technical specifications published on www lem com or in available datasheets Serial numbers Electronics Head LEM Denmark A S certifies that all involved procedures are 1S09001 2008 controlled Smoerum September 1st 2011 ty 1 i J Morten Bruun Larsen R amp D Manager O5January2012 Version 0 Page 29 of 29
28. ystem to many different maximum input currents O5January2012 Version 0 Page 15 of 29 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 transfer ratio of the system is then I 1500A 1500 Sn When a system is equipped with a VOM the output current will be converted to a voltage The maximum nominal output voltage V is fixed at 10 V Thus the ratio G from the example above can be found as I go iso V 10V on O5January2012 Version 0 Page 16 of 29 5 T ZIN 4 6 iy lt LEM Front hail ITZ ULTRASTAB YL j CTRL GH O DERM a BELEN LEM Se T Figure 2 Front panel of electronics rack Q On the front of the ITZ 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 Ip higher than approximately 1 of nominal full scale output HIGH Ip This LED is lit Yellow when the transducer output is active with an Ip higher than 105 of nominal full scale output OVERLOAD This LED is lit red when the transducer head saturates due to excessive primary current 600A 24000A These LEDs are lit Yellow when a transducer head with the corresponding full scale range is connected to the ITZ ULTRASTAB CUSTOM This LED is lit Yellow when the system setup has detected a custo
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