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| Current Transducer LA 50-S/SP1 For the electronic measurement of currents : DC, AC, pulsed..., with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). IPN = 50 A 0634 Electrical data Features IPN IP RM Primary nominal r.m.s. current Primary current, measuring range Measuring resistance with 15 V ISN KN VC IC @ 50 A max @ 100 A max 50 0 .. 100 RM min RM max 0 0 25 1 : 2000 15 10 + IS 330 100 A A mA V mA * Closed loop (compensated) current * Insulated plastic case recognized according to UL 94-V0. transducer using the Hall effect Secondary nominal r.m.s. current Conversion ratio Supply voltage ( 5 %) Current consumption Special features * IP = 0 .. 100 A * K N = 1 : 2000 Advantages Accuracy - Dynamic performance data * * * * * * * Excellent accuracy Very good linearity Low temperature drift Optimized response time Wide frequency bandwidth No insertion losses High immunity to external interference * Current overload capability. XG L Overall accuracy @ IPN, TA = 25C Linearity error Offset current @ IP = 0, TA = 25C Thermal drift of IO Response time 1) @ 90 % of IPN di/dt accurately followed Frequency bandwidth (- 1 dB) 0.5 < 0.1 Typ Max 0.1 0.4 % % mA mA s A/s kHz IO IOT tr di/dt f - 10C .. + 70C 0.2 <1 > 50 DC .. 150 Applications General data TA TS RS m Ambient operating temperature Ambient storage temperature Secondary coil resistance @ TA = 70C Mass Standards - 10 .. + 70 C - 25 .. + 85 C 130 45 g EN 50178 : 1997 * AC variable speed drives and servo * Static converters for DC motor drives * Battery supplied applications * Uninterruptible Power Supplies * Switched Mode Power Supplies * Power supplies for welding applications. (SMPS) (UPS) motor drives Application domain Note : 1) With a di/dt of 50 A/s. * Industrial. 060911/7 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 LA 50-S/SP1.... Isolation characteristics Vd Vw dCp dCl CTI R.m.s. voltage for AC isolation test, 50/60 Hz, 1 mn Impulse withstand voltage 1.2/50 s Creepage distance Clearance distance Comparative Tracking Index (Group II) 4 >7.4 Min 8.70 7.40 400 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, V W Single isolation Reinforced isolation Rated isolation voltage 600 V 300 V IEC 61010-1 Nominal voltage 600 V 300 V 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. 060911/7 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 LA 50-S/SP1 (in mm. 1 mm = 0.0394 inch) Left view Front view Connection Rep. A-B Clearance 7.40 mm Creepage 8.70 mm Top view Mechanical characteristics * General tolerance * Transducer fastening Recommended fastening torque * Primary through-hole * Connection of secondary 0.2 mm 2 holes 3.2 mm 2 M3 steel screws 1.1 Nm or 0.80 Lb.-Ft. 12.7 x 6.35 mm Molex 5045-04/AG Remarks * IS is positive when IP flows in the direction of the arrow. * Temperature of the primary conductor should not exceed * Dynamic performances (di/dt and response time) are best * In order to achieve the best magnetic coupling, the primary * To measure nominal currents of less than 50 A, the optimum accuracy is obtained by having several primary turns (nominal current x number of turns < 50 At). windings have to be wound over the top edge of the device. with a single bar completely filling the primary hole. 100C. 060911/7 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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