LA 55-P/SP1 Lem

Current Transducer LA 55-P/SP1 I = 50 A PN For the electronic measurement of currents: DC, AC, pulsed..., with galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). 16024 Electrical data Features I Primary nominal current rms 50 A PN I Primary current, measuring range 0 .. 100 A PM Closed loop (compensated) R Measuring resistance T = 70C T = 85C M A A current transducer using the Hall R R R R M min M max M min M max effect with 12 V 50 A 0 215 0 210 max Printed circuit board mounting 100 A 0 35 0 30 max Insulated plastic case recognized with 15 V 50 A 0 335 30 330 max according to UL 94-V0. 100 A 0 95 30 90 max I Secondary nominal current rms 25 mA SN Special features K Conversion ratio 1 : 2000 N I = 0 .. 100 A V Supply voltage ( 5 %) 12 .. 15 V PM C K = 1 : 2000. I Current consumption 10 ( 15 V) + I mA N C S Advantages Accuracy - Dynamic performance data Excellent accuracy X Accuracy I , T = 25C 15 V ( 5 %) 0.65 % Very good linearity PN A 12 .. 15 V ( 5 %) 0.90 % Low temperature drift Linearity error < 0.15 % Optimized response time L Typ Max Wide frequency bandwidth I Offset current I = 0, T = 25C 0.10 mA No insertion losses O P A 1) I Magnetic offset current I = 0 and specified R , High immunity to external OM P M after an overload of 3 x I 0.15 mA interference PN I Temperature variation of I - 25C .. + 85C 0.05 0.30 mA Current overload capability. OT O - 40C .. - 25C 0.10 0.50 mA Applications t Reaction time to 10 % of I step < 500 ns ra PN 2) t Response time to 90 % of I step < 1 s r PN AC variable speed drives and di/dt di/dt accurately followed > 200 A/s servo motor drives BW Frequency bandwidth (- 1 dB) DC .. 200 kHz Static converters for DC motor drives General data Battery supplied applications Uninterruptible Power Supplies T Ambient operating temperature - 40 .. + 85 C A (UPS) T Ambient storage temperature - 40 .. + 90 C S Switched Mode Power Supplies R Secondary coil resistance T = 70C 145 S A (SMPS) T = 85C 150 A Power supplies for welding m Mass 18 g applications. Standards EN 50178: 1997 Application domain 1) Notes: Result of the coercive field of the magnetic circuit Industrial. 2) With a di/dt of 100 A/s. Page 1/3 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 090519/13 www.lem.comCurrent Transducer LA 55-P/SP1 Isolation characteristics V Rms voltage for AC isolation test, 50 Hz, 1 min 2.5 kV d V Impulse withstand voltage 1.2/50 s 4.5 kV w Min dCp Creepage distance 3.8 mm dCI Clearance distance 3.8 mm CTI Comparative Tracking Index (group IIIa) 175 Applications 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 dCp, dCI, V Rated isolation voltage Nominal voltage w Single isolation 300 V 300 V Reinforced isolation 150 V 150 V Safety This transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the manufacturers 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 build-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 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. 090519/13 www.lem.com