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Ultrastab 866 Precision Current Transducer User Manual
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3. Me DANFYSIK Ultrastab 866 Precision Current Transducer User Manual at gag gvisvarin Distributed by GMW Associates 955 Industrial Road San Carlos CA 94070 USA Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Website http www gmw com Manufactured by Danfysik A S Mollehaven 31 DK 4040 Jyllinge Denmark Tel 45 46 76 81 50 Fax 45 46 73 15 51 Email danfysik danfysik dk File Name DF MAN 866 pdf Rev date 12 Feb 2002 GMW 955 Industrial Road San Carlos CA 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com Me DANFYSIK The ULTRASTAB 866 Current Transducer is the latest model in the DANFYSIK Current Trans ducer program It s the first transducer of its class with transducer head and SMD based electronics integrated in one assembly The model 866 is based on the proven high performance current measurement system in the ULTRASTAB program and it is used as a current feed back element in precision power supplies or gradient amplifiers THE 566 FEATURES Bandwidth DC to 100 kHz Linearity better than 1 ppm Absolute calibration traceable to NIST e Temperature coefficient less than e 0 3 ppm C APPLICATIONS Feed back element in high performance gradient amplifiers GMW It ranges 0 600A from DC to 100 kHz with a temperature coefficient lower than 1 ppm C Powered with 15V it produces an analog curren
4. optics HP HFBR2321 All ppm figures refer to max output Specifications are subject to change without notice We recommend that a shielded output cable and plug are used to ensure the maximum immunity against electrostatic fields 9 pole D SUB Pin configuration Pin 1 For factory use only Pin 2 Test pin for zero detector factory use only Pin 3 Normal operation status opto coupler Pin 4 GND and electrostatic shield Pin 5 15 V SOMA compensation current Pin 6 Current output Pin 7 For factory use only Pin 8 Normal operation opto coupler Pin 9 15 200 mA compensation current GMW 955 Industrial Road San Carlos CA 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com e DANFYSIK ULTRASTAB 866 600 CURRENT TRANSDUCER BASIC SPECIFICATIONS Primary current I max 0 600A Output current max 0 400 mA Overload capacity Normal operation 10096 Basic function maintained 110 Fault 500 0 1 s External Burden resistor see fig 1 Max Min Measuring ratio stability Initial 2 ppm v s temperature 0 3 ppm C 0 120 uA v s time lt 1 ppm month 0 060 uA Offset Initial lt 20 ppm 8 uA v s temperature 0 2 ppm 0 1 Sensivity to power supply changes lt 1 5 ppm Output noise RMS DC 10 Hz lt 0 05 ppm 0 02 uA DC 10 kHz lt 3 ppm 1 2 uA C 50 kHz 10 ppm 4 uA Feedback noise RMS DC 50 kHz mea
5. transducer 866 BR 2 5 Burden resistor 866 BR 5 0 Burden resistor 866 SC 2m shielded cable 866 BB busbar 866 MB mounting bracket EXE OPTIONAL 666 FIB fibre optics trigger input 955 Industrial Road San Carlos 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com Me DANFYSIK ULTRASTAB 866 150 CURRENT TRANSDUCER BASIC SPECIFICATIONS Primary current I max 0 150A Output current max 0 200 mA Overload capacity Normal operation 100 Basic function maintained 110 Fault 500 0 1 s External Burden resistor see fig 1 Max Min 5 Measuring ratio stability Initial lt 2 ppm v s temperature 0 3 ppm v s time ppm month Offset Initial v s temperature Output noise RMS DC 10 Hz DC 10 KHz DC 50 KHz Feedback noise RMS DC 50 kHz measured on the pr mary current cable one turn lt 10 uV typical 5 uV GMW 955 Industrial Road San Carlos CA 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com e DANFYSIK ULTRASTAB 866 150 CURRENT TRANSDUCER BASIC SPECIFICATIONS Input power requirement Max power consumption 5 VA 15 V regulated lt 5 200 mA compensation current Mechanical dimensions 866 assembly 122 x 98 x 57 mm hole for busbar or cable 26 mm Weight approx kg Optional feature Input for 35 45 kHz oscillator trigger signal via fibre
6. den Resistor Rb Connection of opto coupler output status Re Status Normal Operation means 15V present Zero detectors are working Output Current lt 110 MAX BURDEN RESISTOR VOLTAGE MAX BURDEN RESISTOR VALUE 0 0 50 100 150 200 250 300 350 400 450 500 550 600 50 100 150 200 250 300 350 400 450 500 550 600 PRIMARY CURRENT PRIMARY CURRENT A The graph shows the maximum Voltage that can Be achieved across the externally connected The Graph shows the relationship between the Burden Resistor as a function of the Primary Burden Resistor and the Primary Current Current GMW 955 Industrial Road San Carlos CA 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com DANFYSIK ULTRASTAB 866 Primary current 0 600A Precission Current Transducer Temp coefficient T 0 3 ppm Resolution 0 05 ppm Linearity 1 ppm Ratio 1500 1 Noise Spectrum Frequency Hz 0 1 1 0 10 0 100 0 1 000 0 10 000 0 100 000 0 4 0 3 0 2 5 2 0 HE ER TIT ga vo com T 1 5 1 0 RMS noise ppm DANFYSIK _________ Ultrastab 866 VOM INSTALLATION April 10 2002 LTRASTAB VOM XX D sub 9p male Shielded Cable Shield Electrostatic Shield The Wiring diagram shows Power connections Connection of voltage output Connection of opto coupler output status Re Status Normal Operation means
7. etic and electrostatic fields With the 866 delivered with the standard current transfer ratio of 1500 1 a 600A primary current will generate a 400mA compensation current Wired up with a 2 5 Ohm Burden resistor a 1V analog output signal will be available If e g a max 450A primary current shall be measured the Burden resistor can be increased to 3 3 Ohm producing a 1V analog signal From Fig 1 on the attached installation data sheet it can be seen that the 866 can operate with higher resistance values of Burden resistors but in order to get the best performance out of the Burden resistors we recommend to keep the power loss as low as possible GMW STANDARD FEATURES The ULTRASTAB 866 is equipped with opto isolator for status interlock reading The ULTRASTAB 866 has a built in scanning lock in circuit for automatic recovery to normal operation after overload condition OPTIONAL FEATURES The ULTRASTAB 866 has a built in free running oscillator which drives the zero flux detector circuitry In cases where the application requires syn chronization with external oscillator frequencies e g in gradient amplifiers the 866 can be delivered with a fibre optics trigger input for the frequency range 35 to 45 kHz ACCESSORIES Mounting bracket 9 pole D sub with 2 m shielded cable 2 5 Ohm Burden resistor 4 x 10 Ohm 0 1 Te lt 3 ppm 25 busbar ORDERING INFORMATION STANDARD 866 current
8. nly Pin 8 Normal operation opto coupler Pin 9 15 V House Electrostatic shield GMW 955 Industrial Road San Carlos CA 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com CO DANFYSIK 866 Precision Current Transducer 12 February 2002 VOM Voltage Output Module SPECIFICATIONS Offset Initial lt 10 ppm vs temperature 5 ppm Gain Initial 50 ppm vs temperature 6ppm C Bandwidth 3dB DC 100kHz GMW 955 Industrial Road San Carlos CA 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com DANFYSIK __________ 866 6004 Installation 12 Apr l 2002 Shielded Cable I Part No SP10381 A p Blue a Gurent Quipul __ T Purple Violet H gt 415V m ee gt 45V T AA PAE AAA 4 gt Black me i HERREN LEE NES m gt VCC y ____ White 9 3 rh Y N EE 4 N A YH ee a OD ae Imax 6mA GND N al Si vedi on ms men l Lo i RA nn The Wiring diagram shows Power connections Connection of Bur
9. sured on primary cable one turn lt 10 uV typical 5 uV Busbar free zone to be within linearity specification Cylinder shape diameter x length 150 x 150 mm GMW 955 Industrial Road San Carlos 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com e DANFYSIK ULTRASTAB 866 600 CURRENT TRANSDUCER BASIC SPECIFICATIONS Bandwidth 3 d B small signal 0 596 DC to 100 kHz Test voltage pin 4 ground to a 25 busbar 5 kV AC RMS Operating temperature 10 50 C Storage temperature 0 60 Input power requirement Max power consumption 10 VA 15 V regulated lt 5 200 mA conpensation current Emission complying standard EN 50081 2 Immunity complying standard EN 50082 2 1995 Operating humidity 20 80 Mechanical dimensions 866 assembly 122 x 98 x 57 mm hole for busbar or cable 26 mm Weight approx kg Optional feature Input for 35 45 kHz oscillator trigger signal via fibre optics HP HFBR2321 All ppm figures refer to max output Specifications are subject to change without notice We recommend that a shielded output cable and plug are used to ensure the maximum immunity against electrostatic fields 9 pole D SUB Pin configuration Pin 1 For factory use only Pin 2 Test pin for zero detector factory use only Pin 3 Normal operation status opto coupler Pin 4 GND Pin 5 15 V Pin 6 Current output Pin 7 For factory use o
10. t of 400mA at 600 A primary current Output noise and noise feed back to the main conductor are both extremely low and electro static shielding ensures maximum immunity against external electrostatic fields Resolution better than 0 05 ppm Bipolar up to 400mA output current at 600A primary current Low noise on the output signal Noise feed back to main conductor 10uV X X se Se X Feed back element in precision current regulated power supplies 955 Industrial Road San Carlos CA 94070 Tel 650 802 8292 Fax 650 802 8298 Email sales gmw com Web site http www gmw com Me DANFYSIK WORKING PRINCIPLE The DANFYSIK ULTRASTAB 866 Current Transducer system is a unique design based on the zero flux principle for galvanically isolated current measurement With the primary current conductor through the transducer head center hole and current flowing the electronics will generate a current in the built in compensation winding counter balanc ng the primary ampere turns A very sensitive and extremely low noise detector circuit patented w ll detect when zero flux is obtained and an analog current signal will be generated at the output terminals in direct pro portion to the primary current INSTALLATION The ULTRASTAB 866 unit is fully self contained requiring only 15V voltage supply All connections via a 9 pole D SUB socket It can be installed in any orientation and has a high immunity to external magn
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