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| Current Transducer LAS 50-TP 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 = 50 A 16069 Electrical data IPN IP VOUT RL ROUT V REF Primary nominal r.m.s. current Primary current, measuring range Analog output voltage @ Output load resistance Output internal resistance Internal reference voltage V REF load resistance V REF internal resistance V REF external voltage range Max. output capacitive load Supply voltage ( 5 %) Current consumption @ VC = 5 V 50 A 0 .. 150 A V REF (0.625*IP/IPN) V V REF 0.025 V 2 k < 20 2.5 0.025 V 1 M 200 2.0 .. 2.8 V 1 nF 5 V 18 mA Features * Current transducer using Eta-technology IP IP = 0 * Unipolar voltage supply * Insulated plastic case recognized according to UL 94-V0 * Compact design for PCB mounting * Extended measuring range. CL VC IC Advantages * * * * * * * 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. typ Accuracy - Dynamic performance data X L Accuracy 1) @ IPN , TA = 25C Linearity error 0 .. IPN 2) - 40C.. + 85C - 40C.. + 85C - 10C.. + 85C - 40C.. - 10C <1 < 0.7 Typ 80 50 150 400 Max 120 80 300 700 % % ppm/K ppm/K ppm/K ppm/K mV ns ns A/s mVpp kHz TCVOUT Thermal drift of VOUT @ IP = 0 TCVOUT / VREF Thermal drift of VOUT / VREF @ IP = 0 TC G Thermal drift of the gain VOM t ra tr di/dt f 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. Residual voltage @ IP = 0, after an overload of 2 x IPN DC Reaction time @ 10 % of IPN Response time @ 90 % of IPN di/dt accurately followed Output noise without external filter Frequency bandwidth (- 1 dB) 5 < 200 < 500 > 100 < 10 DC .. 100 General data TA TS m Ambient operating temperature Ambient storage temperature Mass Standards - 40 .. + 85 - 40 .. + 100 C C Application domain * Industrial. 20 g EN 50178 : 1997 All Data are given with a R L = 10 k Notes : 1) Excluding electrical, magnetic offsets and linearity 2) Including magnetic offset. Copyright protected. 060504/14 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. Page 1/3 LEM w w w .lem.com Current Transducer LAS 50-TP Isolation characteristics Vd Vw Ve dCp dCl CTI R.m.s. voltage for AC isolation test, 50/60 Hz, 1 mn Impulse withstand voltage 1.2/50 s R.m.s. voltage for partial discharge extinction @ 10pC Creepage distance 3) Clearance distance 3) Comparative Tracking Index (Group III a) 5 >8 >2 Min 10.70 10.70 175 kV kV kV 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 dCp, dCI Single isolation Reinforced isolation 3) IEC 61010-1 Nominal voltage 1000 V 500 V Rated isolation voltage 1000 V 500 V Note : 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 following 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. 060504/14 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. Page 2/3 LEM w w w .lem.com Dimensions LAS 50-TP (in mm. 1 mm = 0.0394 inch) Bottom view Connection Front view Left view Num b e r of p rim a ry turns IP N 1 P rim a ry current N o m inal [A ] 50 M a xim a l IP 150 [A ] N o m ina l output voltage P rim a ry r e s i s ta n c e P rim a ry i n s e r ti o n i n d u c ta n c e LP [H] 0 .0 0 8 V OUT [V ] RP 0 .1 2 [m] V R E F 0 .6 2 5 Mechanical characteristics * General tolerance * Fastening & connection of primary Recommended PCB hole * Fastening & connection of secondary Recommended PCB hole 0.2 mm 6 pins 1.4 x 1 mm 2 mm 4 pins 0.7 x 0.6 mm 1.2 mm Output Voltage - Primary Current VOUT [ V ] 5 4.375 3.125 2.5 1.875 0.625 Remarks * VOUT is positive when IP flows from terminals "IN" to terminals "OUT". * Temperature of the primary conductor should not exceed 100C. * This is a standard model. For different versions please contact us. - IPmax - IPN 0 IPN IPmax IP [ A ] 060504/14 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. Page 3/3 LEM w w w .lem.com |
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