Current Transducer LAH 50-P IPN = 50 A 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). 16010 Electrical data IPN IP RM Primary nominal r.m.s. current Primary current, measuring range Measuring resistance @ with ± 12 V with ± 15 V ISN KN VC IC Vd Ve Vw @ @ @ @ 50 0 .. 110 TA = 70°C TA = 85°C RM min RM max RM min RM max 1) IPN [± A DC ] IPN [A RMS ] 2) IPN [± A DC ] IPN [A RMS ] 2) 0 0 0 0 221 115 335 195 0 0 0 0 mA IS V mA kV kV kV Accuracy - Dynamic performance data Accuracy 3) @ IPN, TA = 25°C Linearity X ε L ± 0.25 < 0.15 tr a tr di/dt f Offset current @ TA = 25°C Residual current @ IP = 0, after an overload of 5 x IPN Thermal drift of IO 0°C .. + 70°C - 25°C .. + 85°C Max ± 0.15 ± 0.10 ± 0.15 ± 0.10 ± 0.30 ± 0.10 ± 0.40 Reaction time @ 10 % of IPN Response time 4) @ 90 % of IPN di/dt accurately followed Frequency bandwidth (- 1 dB) < 200 < 500 > 200 DC .. 200 % % Typ IO IOM IOT mA mA mA mA ns ns A/µs kHz TA TS RS Ambient operating temperature Ambient storage temperature Secondary coil resistance m Insulating material group Mass Standards 5) 1) 2) 3) 4) 5) • Closed loop (compensated) current • 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. 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) General data Notes : Features transducer using the Hall effect Ω Ω Ω Ω 214 108 327 188 Secondary nominal r.m.s. current 25 Conversion ratio 1 : 2000 Supply voltage (± 5 %) ± 12 .. 15 Current consumption 10 (@ ± 15V) + 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 µs > 12 A A @ TA = 70°C @ TA = 85°C - 25 .. + 85 - 40 .. + 90 135 142 I 22 EN 50178 °C °C Ω Ω • Power supplies for welding applications. g For 10 s, with R M ≤ 71 Ω (V C = ± 15 V) 50 Hz Sinusoidal Without IO & IOM With a di/dt of 100 A/µs A list of corresponding tests is available. 060124/7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM page 1/3 w w w .lem.com Dimensions LAH 50-P (in mm. 1 mm = 0.0394 inch) Connection Bottom view Left view Front view Number Primary current N o m i n a l Turns Primary Primary insertion of primary nominal maximum output current r a t i o resistance i n d u c t a n c e t u r n s IPN [ A ] IP ISN KN RP LP 1 50 [A] 110 [ mA ] 25 1 : 2000 Mechanical characteristics • General tolerance • Fastening & connection of primary Recommended PCB hole • Fastening & connection of secondary Recommended PCB hole [ mΩ ] 0.12 [ µH ] 0.008 Remarks ± 0.2 mm 6 pins 1.4 x 1 mm 2 mm 3 pins 0.7 x 0.6 mm 1.2 mm • IS is positive when IP flows from terminals "IN" to terminals "OUT". • The jumper temperature and PCB should not exceed 100°C. • This is a standard model. For different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us. 060124/7 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM page 2/3 w w w .lem.com