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| Current Transducer HXS 20-NP For the electronic measurement of currents : DC, AC, pulsed, mixed, with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). IPN = 5 - 10 - 20 A All Data are given with a R L = 10 k Electrical data IPN IP VOUT VREF Primary nominal rms current Primary current measuring range Output voltage (Analog) @ IP IP = 0 Reference voltage 1) - Output voltage VREF Output impedance VREF Load impedance Load resistance Output internal resistance Capacitive loading Supply voltage ( 5 %) Current consumption @ VC = 5 V 20 A 60 A VREF (0.625*IP/IPN) V VREF 0.0125 V 2.5 0.025 V typ. 200 200 k 2 k < 10 <1 F 5 V 22 mA Features * Hall effect measuring principle * Multirange current transducer through PCB pattern lay-out * Galvanic isolation between primary * Isolation test voltage 3500V * Low power consumption * Extremely low profile, < 11mm * Single power supply +5V * Fixed offset & gain * Insulated plastic case recognized according to UL 94-V0. and secondary circuit RL ROUT CL VC IC Accuracy - Dynamic performance data Accuracy 2) @ IPN , TA = 25C Linearity error 0 .. IPN L .. 3 x IPN TCVOUT Temperature coefficient of VOUT @ IP = 0 TCVREF Temperature coefficient of VREF TCVOUT / VREF Temperature coefficient of VOUT / VREF @ IP = 0 TCG Temperature coefficient of G VOM Magnetic offset voltage @ IP = 0, after an overload of 3 x IPN t ra Reaction time @ 10 % of IPN tr Response time @ 90 % of IPN di/dt di/dt accurately followed VNO Output noise voltage (DC ..10 kHz) (DC .. 1 MHz) f Frequency bandwidth (-3 dB) 3) X 1 0.5 1 0.4 0.01 0.2 % of IPN % of IPN % of IPN mV/K %/K mV/K Advantages * Small size and space saving * Only one design for wide current * High immunity to external * Internal & external reference interference. ratings range 0.05% of reading/K < 0.7 <3 <5 > 50 < 20 < 40 DC .. 50 % of IPN s s A/s mVpp mVpp kHz Applications * AC variable speed drives * Static converters for DC motor drives * Battery supplied applications * Uninterruptible Power Supplies * Switched Mode Power Supplies * Power supplies for welding applications. (SMPS) (UPS) General data TA TS m Ambient operating temperature Ambient storage temperature Mass Standards - 40 .. + 85 C - 40 .. + 85 C 10 g EN 50178 (97-10-01) Application Domain Notes : 1) It is possible to overdrive VREF with an external reference voltage between 2 - 2.8 V providing its ability to sink or source approximately 2.5 mA. 2) Excluding offset and hysteresis. 3) Small signal only to avoid excessive heatings of the magnetic core. * Industrial Page 1/3 061004/11 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com Current Transducer HXS 20-NP Isolation characteristics Vb Rms rated voltage with IEC 61010-1 standards and following conditions - Single insulation - Over voltage category III - Pollution degree 2 - Heterogeneous field Rms rated voltage with EN 50178 standards and following conditions - Reinforced insulation - Over voltage category III - Pollution degree 2 - Heterogeneous field Rms voltage for AC isolation test, 50 Hz, 1 min Creepage distance Clearance distance Comparative tracking index (Group I ) 150 V rms Vb 300 V rms Vd dCp dCl CTI 3.5 > 5.5 > 5.5 > 600 kV mm mm Page 2/3 061004/11 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com Dimensions HXS 20-NP (in mm. 1 mm = 0.0394 inch) 16.7 18.7 10.7 3.5 1 12 0.6 6.1 3.5 14 Required connection circuit Recommended connection circuit Ref Out GND Vc 87 P=2.54 P=2.54 5V HXS 20-NP 47nF 0V 4.7nF Output 21 8-1.3d 47nF 4-0.5*0.25 7.7 Number of primary turns Primary current nominal maximum I PN [A] IP [A] Primary resistance R P [m ohm] Primary insertion inductance [uF] [H] LP Recommended PCB connections V Ref. IN/OUT Operation Principle +Vc OUT IN 1 35 7 1 20 60 0.05 0.2 0.025 2 4 6 8 7 Vout Vref.(IN/OUT) 0V IN 1 35 2 10 5 30 15 0.1 2 4 6 8 7 OUT IN 1 35 4 1 0.4 2 4 6 8 OUT Mechanical characteristics * General tolerance * Fastening & connection of primary jumper Recommended PCB hole * Fastening & connection of secondary Recommended PCB hole 0.2 mm 8 pins O 1.3 mm O 1.5 mm 4 pins 0.5 x 0.25 O 0.7 mm Safety This transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the following manufacturer's operating instructions. Remarks * VOUT is positive when IP flows from terminals 1, 3, 5, 7 (IN) to terminals 2, 4, 6, 8 (OUT). * Temperature of the primary conductors should not exceed 100C. Caution, risk of electrical shock When operating the transducer, certain parts of the module can carry hazardous voltage (eg. primary busbar, power supply). Ignoring this warning can lead to injury and/or cause serious damage. This transducer is a built-in device, whose conducting parts must be inaccessible after installation. A protective housing or additional shield could be used. Main supply must be able to be disconnected. Page 3/3 061004/11 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com |
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