Current Transducer LTSR 15-NP IPN = 15 A 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). 16196 Electrical data IPN IPM VOUT VREF G NS RL C Lmaxi R IM TCR IM VC IC Primary nominal current rms Primary current, measuring range 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 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 kΩ 500 pF 83.33 Ω < 50 ppm/K 5 V 28 + IS5)+ (VOUT/RL) mA Features ± 0.2 ± 0.7 < 0.1 Maxi Advantages Accuracy - Dynamic performance data X ε L Accuracy @ IPN , TA = 25°C Accuracy with R IM @ IPN , TA = 25°C Linearity error TCVOUT Temperature coefficient of VOUT /VREF @ IP = 0 - 40°C .. + 85°C TCG Temperature coefficient of G - 40°C .. + 85°C VOM Magnetic offset voltage @ IP = 0 after an overload of 3 x IPN 5 x IPN 10 x IPN TCVREF Temperature coefficient of internal VREF @ IP = 0 - 10°C .. + 85°C - 40°C .. - 10°C tra Reaction time @ 10 % of IPN tr Response time to 90 % of IPN step di/dt di/dt accurately followed BW Frequency bandwidth (0 .. - 0.5 dB) (- 0.5 .. 1 dB) % % % 64 50 6) ppm/K ppm/K ± 0.5 ± 2.0 ± 2.0 mV mV mV • • • • • • • range 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. • • • • • • • 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 50 100 < 100 < 400 > 35 DC .. 100 DC .. 200 ppm/K ppm/K ns ns A/µs 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 = 25°C, 2.475 V< VREF < 2.525 V. The minimal impedance loading the ref pin should be > 220 kΩ. Internal impedance = 600 Ω. 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) maxi ± 1 mA is needed. 5) IS= IP/N S. 6) Only due to TCR IM. 070307/12 • Closed loop (compensated) multi- • 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. Copyright protected Page 1/3 w w w .lem.com Current Transducer LTSR 15-NP General data TA TS Ambient operating temperature Ambient storage temperature Insulating material group Mass Standards m - 40 .. + 85 °C - 40 .. + 100 °C III a 10 g EN 50178: 1997 IEC 60950-1: 2001 Isolation characteristics Vd Vw Rms voltage for AC isolation test, 50/60 Hz, 1 min Impulse withstand voltage 1.2/50 µs 3 >8 kV kV Ve Rms voltage for partial discharge extinction @ 10pC Mini > 1.5 kV dCp dCl CTI Creepage distance 7) Clearance distance 8) Comparative Tracking Index (Group III a) Mini 15.35 6.2 175 mm mm Application examples According to EN 50178 and IEC 61010-1 standards and following conditions: • Over voltage category OV 3 • Pollution degree PD2 • Non-uniform field EN 50178 IEC 61010-1 Rated isolation voltage Nominal voltage Single isolation 600 V 600 V Reinforced isolation 300 V 300 V dCp, dCI, V W Notes: 7) 8) On housing 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 070307/12 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. w w w .lem.com Dimensions LTSR 15-NP (in mm. 1 mm = 0.0394 inch) Operation principle Date code Model + N° SP Bottom view Front view Back view Number of primary turns 1 Right view Primary nominal current rms IPN [ A ] ± 15 Nominal 9) output voltage VOUT [ V ] 2.5 ± 0.625 Primary resistance R P [ mΩ ] 0.18 Primary insertion inductance L P [ µH ] Recommended connections ± 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 0.12 IN Mechanical characteristics 4 0.05 IN 3 5 0.013 IN 2 6 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 2.5 Remarks • VOUT is positive when IP flows from terminals 1, 2, 3 to terminals 6, 5, 4 • For the EMC, the acceptance criteria are available on request. • Temperature of the primary jumper should not exceed 100 [°C]. 1.875 0.5 - IP - IPN 0 IPN IP IP [ At ] Note: 9) Output voltage when LTSR 15-NP is used with internal reference. Page 3/3 070307/12 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. w w w .lem.com