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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 the 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. 

 

 

 

Summary of Contents for ITZ FLEX ULTRASTAB

Page 1: ...140528 2 Page 1 of 32 ITZ FLEX ULTRASTAB USER GUIDE...

Page 2: ...the electronics unit 20 5 2 Mounting requirements for the transducer heads 20 5 3 Grounding the transducer head 21 5 4 Installation 21 6 Offset adjustment 22 6 1 Adjusting the current offset 22 7 I 0...

Page 3: ...iring schematics to external burden resistor 30 Figure 8 Wiring schematics to high impedance load 30 Figure 9 Block diagram showing the zero flux detector principle 31 LIST OF TABLES Table 1 General s...

Page 4: ...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...

Page 5: ...140528 2 Page 5 of 32 WARRANTY STATEMENT...

Page 6: ...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...

Page 7: ...ATUS INTERLOCK PORT Max collector emitter voltage off state 60 V Max reverse collector emitter voltage off state 5 V Max collector emitter current on state 10 mA On state saturation collector emitter...

Page 8: ...io 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 ow...

Page 9: ...e side panels and over the heat sink 2 3 Grounding considerations To avoid the risk of electrical shock it is mandatory to observe proper grounding practices WARNING To avoid electrical shock the powe...

Page 10: ...o flux based transducer principle it is necessary to take the following precautions CAUTION Do not subject the system to primary current without mains power applied CAUTION Do not operate the system w...

Page 11: ...140528 2 Page 11 of 32 3 Quick start 3 1 System overview Figure 1 System overview for Current Output Figure 2 System overview for Voltage Output...

Page 12: ...e 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 sy...

Page 13: ...urrent 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...

Page 14: ...f 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 seconda...

Page 15: ...ses 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...

Page 16: ...primary current is 1500 A The current conversion ratio of the system is then 1500 1 1500 1 A A KN When a system is equipped with a VOM the output current will be converted to a voltage The maximum nom...

Page 17: ...ERLOAD 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...

Page 18: ...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 3 Transducer head Connection to the tran...

Page 19: ...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 UNC 4 40 screw lock connect...

Page 20: ...stalled 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 n...

Page 21: ...with an 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...

Page 22: ...nt with the selected transducer head connected prior to any measurement in order to achieve the highest accuracy 6 1 Adjusting the current offset To adjust the ITZ FLEX ULTRASTAB please follow these s...

Page 23: ...in 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 s...

Page 24: ...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 Emit...

Page 25: ...full scale output ACTIVE A 0 2 V 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...

Page 26: ...to the primary current again and the measuring can resume when the primary current returns in the nominal range between IPN DC and IPN DC In sweep mode the output current signal will be a slope betwe...

Page 27: ...ith 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 IPN DC 0 2 122 of IPN DC 0 5 126 of I...

Page 28: ...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 sy...

Page 29: ...one 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 curren...

Page 30: ...sted 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 imped...

Page 31: ...rated 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 8 is achieved Below is shown a blo...

Page 32: ...signal via the amplifier A3 which widens the active bandwidth of the transducer to more than 1 kHz Above 1 KHz the transducer operates as a passive current transformer with its 3 dB limit varying from...

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