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| IT 150-S HIGH ACCURACY CURRENT TRANSDUCER Basic specifications Primary current I (max.) Polarity Output current (max.) Overload capacity : Normal operation Basic function maintained Fault External Burden resistor - see fig. 1 : Max. Min. Current transfer ratio Linearity Measuring/ratio stability : Initial v.s. temperature v.s. time 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 primary current cable - one turn) 0-150 A Bipolar 0-200 mA 100 % 110 % 500 % (0.1 s) 200 5 750 : 1 < 1 ppm < 2 ppm < 0.3 ppm/C < 1 ppm/month 8 A 0.1 A/C < 0.04 A < 2.4 A < 8 A < 10 V (typical 5 V) r > 70 mm > 100 A/s DC to 100 kHz 5 kV AC (RMS) 10-50C max. power consumption 5 VA 15 V < 5 % + 15 V : 200 mA, - 15 V : 50 mA + compensation current 122 x 98 x 57 mm hole for busbar or cable : 26 mm approx. 1 kg Busbar free zone (from center) di/dt accurately followed Bandwidth (3 dB, small signal 0.5 %) Test voltage (pin 4 - ground to a 25 busbar) Operating temperature Input power requirement Mechanical dimensions Weight All ppm figures refer to max. output current. 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. 981014/2 LEM Components www.lem.com IT 150-S INSTALLATION IT 150 USER SIDE MAX BURDEN RESISTOR Primary current (A) Connection of Burden Resistor. Burden Resistor value : see fig. 1 Fig. 1. Relationship between the externally connected Burden Resistor and the primary current. BURDEN RESISTOR VOLTAGE Primary current (A) Fig. 2. The Voltage that can be achieved across the externally connected Burden Resistor as a function of the primary current. Dimensions IT 150-S 9-POLE D-SUB Pin 1 Pin 2 Pin 4 Pin 5 Pin 6 Pin 7 Pin 9 : (For factory use only) : (Test pin for zero detector for factory use only) : 0 V and electrostatic shield : - 15 V/50 mA + compensation current : Current output : (For factory use only) : + 15 V/200 mA + compensation current. |
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