Current Transducer LTSR 15-NP For the electronic measurement of currents: DC, AC, pulsed, mixed, with galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). IPN = 15 At 16196 Electrical data IPN IPM IP VOUT VREF G NS RL C L max R IM TCR IM VC IC Primary nominal current rms Primary current, measuring range Overload capability Output voltage (Analog) @ IP IP = 0 Reference voltage (internal reference), RefOUT mode Reference voltage (external reference), RefIN mode Sensitivity Number of secondary turns ( 0.1 %) Load resistance Maximum capacitive loading Internal measuring resistance ( 0.5 %) Temperature coefficient of R IM Supply voltage ( 5 %) Current consumption @ VC = 5 V Typ 15 At 0 .. 48 1) At 250 At 2.5 (0.625*IP/IPN) V 2.5 2) V 2.5 3) V 1.9 .. 2.7 4) V 41.6 mV/A 2000 2 kW 500 pF 83.33 W < 50 ppm/K 5 V 28+IS5)+(VOUTR/L) mA Accuracy - Dynamic performance data X eL Accuracy @ IPN , TA = 25C Accuracy with R IM @ IPN , TA = 25C Closed loop (compensated) multirange current transducer using the Hall effect Unipolar voltage supply Isolated plastic case recognized according to UL 94-V0 Compact design for PCB mounting Incorporated measuring resistance Extended measuring range Access to the internal voltage reference Possibility to feed the transducer reference from external supply. Advantages 0.2 0.7 Linearity error < 0.1 Max TCVOUT Temperature coefficient of VOUT /VREF @ IP = 0 - 40C .. + 85C 64 TCG Temperature coefficient of G - 40C .. + 85C 50 6) VOM Magnetic offset voltage @ IP = 0, after an overload of 3 x IPN 0.5 5 x IPN 2.0 10 x IPN 2.0 TCVREF Temperature coefficient of internal VREF @ IP = 0 - 10C .. + 85C 50 - 40C .. - 10C 100 tra Reaction time @ 10 % of IPN < 100 tr Response time to 90 % of IPN step < 400 di/dt di/dt accurately followed > 35 BW Frequency bandwidth (0 .. - 0.5 dB) DC .. 100 (- 0.5 .. 1 dB) DC .. 200 % % % ppm/K ppm/K mV mV mV ppm/K ppm/K ns ns A/s kHz kHz Notes: 1) Only in refOUT mode or with external REF less than 2.525 V and greater than 2.475 V. For external REF out of these limits see leaflet. 2) VOUT is linked to VREF, by conception the difference between these two nodes for IP = 0 is maximum 25 mV, 2.475 V < VOUT < 2.525 V. 3) In RefOUT mode at TA = 25C, 2.475 V< VREF < 2.525 V. The minimal impedance loading the ref pin should be > 220 kW. Internal impedance = 600 W. For most applications you need to buffer this output to feed it into an ADC for example. 4) To overdrive the REF (1.9 V .. 2.7 V) max 1 mA is needed. 5) IS = IP/NS. 6) Only due to TCR IM. 110214/13 Features Excellent accuracy Very good linearity Very low temperature drift Optimized response time Wide frequency bandwidth No insertion losses High immunity to external interference Current overload capability. Applications AC variable speed drives and servo motor drives Static converters for DC motor drives Battery supplied applications Uninterruptible Power Supplies (UPS) Switched Mode Power Supplies (SMPS) Power supplies for welding applications. Application Domain Industrial. LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice Page 1/3 www.lem.com Current Transducer LTSR 15-NP General data TA TS m Ambient operating temperature Ambient storage temperature Mass Standards 1) - 40 .. + 85 C - 40 .. + 100 C 10 g EN 50178: 1997 IEC 60950-1: 2001 Isolation characteristic Vd Vw Ve dCp dCI CTI Rms voltage for AC isolation test, 50 Hz, 1 min Impulse withstand voltage 1.2/50 s Rms voltage for partial discharge extinction 10 pC Creepage distance 2) Clearance distance 3) Comparative Tracking Index (group IIIa) 3 > 8 Min > 1.5 Min 15.35 6.2 175 kV kV kV mm mm Applications examples According to EN 50178 and CEI 61010-1 standards and following conditions: Over voltage category OV 3 Pollution degree PD2 Non-uniform field EN 50178 EIC 61010-1 Rated insulation voltage Nominal voltage Single insulation 600 V 600 V Reinforced insulation 300 V 300 V dCp, dCI,Vw Notes: 1) On housing 2) On PCB with soldering pattern UTEC93-703. Safety This transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the manufacturer's operating instructions. 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 2/3 110214/13 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com Dimensions LTSR 15-NP (in mm.) Operation principle Number of primary turns Primary nominal current rms IPN [ A ] Nominal 1) output voltage VOUT [ V ] Primary resistance RP [ mW ] Primary insertion inductance LP [ H ] 1 15 2.5 0.625 0.18 0.013 Recommended connections IN 2 7.5 2.5 0.625 0.81 5 2.5 0.625 1.62 General tolerance Fastening & connection of primary Recommended PCB hole Fastening & connection of secondary Recommended PCB hole Additional primary through-hole OUT 1 6 2 5 3 4 OUT 1 6 2 5 3 4 OUT 1 2 3 Output Voltage - Primary Current 0.2 mm 6 pins 0.8 x 0.8 mm 1.3 mm 4 pins 0.5 x 0.35 mm 0.8 mm 3.2 mm VOUT [V] 5 4.5 3.125 Remarks 2.5 VOUT swings above the 2.5 V offset when IP flows from terminals 1, 2, 3 to terminals 4, 5, 6 (with the arrow) For the EMC, the acceptance criteria are available on request Temperature of the primary conductor should not exceed 100C. Note: 4 0.12 IN Mechanical characteristics 5 0.05 IN 3 6 1.875 0.5 - IPM - IPN 0 IPN IP [ At ] IPM 1) Output voltage when LTSR 15-NP is used with internal reference. 110214/13 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice Page 3/3 www.lem.com