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| Current Transducer LAH 100-P 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 = 100 A Electrical data IPN IP RM Primary nominal r.m.s. current Primary current, measuring range 1) Measuring resistance @ with 12 V 100 0 .. 160 TA = 70C TA = 85C RM min RM max RM min RM max A A Features * Closed loop (compensated) current transducer using the Hall effect ISN KN VC IC Vd Ve Vw X @ IPN [ A DC ] 0 63 0 57 @ IPN [A RMS ] 2) 0 11 0 5 with 15 V @ IPN [ A DC ] 20 120 45 114 @ IPN [A RMS ] 2) 20 51 45 45 @ IP < IPN 3) Secondary nominal r.m.s. current 50 Conversion ratio 1 : 2000 Supply voltage ( 5 %) 12 .. 15 Current consumption 10 (@ 15 V)+I S R.m.s. voltage for AC isolation test, 50/60 Hz, 1 mn 5 R.m.s. voltage for partial discharge extinction @ 10 pC > 2 Impulse withstand voltage 1.2/50 s > 12 mA V mA kV kV kV * Printed circuit board mounting * Insulated plastic case recognized according to UL 94-V0. Advantages * * * * * * * 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. Accuracy - Dynamic performance data L Accuracy 4) @ IPN, TA = 25C Linearity Offset current @ TA = 25C Residual current @ IP = 0, after an overload of 5 x IPN Thermal drift of IO 0C .. + 70C - 25C .. + 85C Reaction time @ 10 % of IPN Response time 5) @ 90 % of IPN di/dt accurately followed Frequency bandwidth (- 1 dB) 0.25 < 0.15 Max 0.15 0.10 0.15 0.10 0.40 0.10 0.50 < 200 < 500 > 200 DC .. 200 Typ % % mA mA mA mA ns ns A/s kHz Applications * AC variable speed drives and servo motor drives IO IOM IOT tr a tr di/dt f * Static converters for DC motor drives * Battery supplied applications * Uninterruptible Power Supplies (UPS) * Switched Mode Power Supplies (SMPS) General data TA TS RS Ambient operating temperature Ambient storage temperature Secondary coil resistance Insulating material group Mass Standards 6) 1) 3) * Power supplies for welding - 25 .. + 85 - 40 .. + 90 115 121 I 24 EN 50178 C C g applications. @ TA = 70C @ TA = 85C m Notes : 6) For 10 s, with R M 25 (VC = 15 V) - 2) 50 Hz Sinusoidal The measuring resistance RM min may be lower (see "LAH Technical Information" leaflet) - 4) Without IO & IOM - 5) With a di/dt of 100 A/s A list of corresponding tests is available. 010820/5 LEM Components w w w.lem.com Dimensions LAH 100-P (in mm. 1 mm = 0.0394 inch) Bottom view Primary turns : Secondary pins : Front view Left view Secondary terminals Terminal M : measure Terminal + : supply voltage + 15 V Terminal - : supply voltage - 15 V IN OUT Connection Number of primary turns Primary current nominal maximum Nominal output current Turns ratio Primary resistance Primary insertion inductance IPN [A] IP [A] 160 ISN [ mA ] 50 KN 1 : 2000 RP [ m ] 0.08 LP 0.007 [ H ] 1 100 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 3 pins 0.7 x 0.6 mm 1.2 mm Remarks * IS is positive when IP flows from terminals "IN" to terminals "OUT". * This is a standard model. For different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us. LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. |
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