page 1/3 14december2012/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com current transducer la 150-p for the electronic measurement of currents: dc, ac, pulsed..., with galvanic isolation between the primary circuit and the secondary circuit. electrical data i pn primary nominal current rms 150 a i pm primary current, measuring range 0 .. 212 a r m measuring resistance @ 85c r m min r m max with 12 v @ 150 a max 0 40 ? @ 212 a max 0 3 ? with 15 v @ 150 a max 0 78 ? @ 212 a max 0 30 ? i sn secondary nominal current rms 75 ma k n conversion ratio 1 : 2000 v c supply voltage ( 5 %) 12 .. 15 v i c current consumption 10 (@ 15 v) + i s ma accuracy - dynamic performance data x accuracy @ i pn , t a = 25c < 0.5 % l linearity error < 0.1 % typ max i oe electrical offset current @ i p = 0, t a = 25c 0.10 ma i om magnetic offset current @ i p = 0 and specifed r m , after an overload of 3 x i pn 0.25 ma i ot temperature variation of i o - 40c .. + 85c 0.15 0.30 ma t ra reaction time to 10 % of i pn step < 300 ns t r response time 1) to 90 % of i pn step < 500 ns di/dt di/dt accurately followed > 100 a/s bw frequency bandwidth (- 1 db) dc .. 150 khz general data t a ambient operating temperature - 40 .. + 85 c t s ambient storage temperature - 40 .. + 90 c r s secondary coil resistance @ t a = 25c 64 2 ? m mass < 25 g standard en 50178: 1997 note: 1) with a di/dt of 100 a/s. i pn = 150 a features closed loop (compensated) current transducer using the hall effect isolated 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) power supplies for welding applications. application domain industrial.
page 2/3 14december2012/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com current transducer la 150-p isolation characteristics v d rms voltage for ac insulation test, 50 hz, 1 min 4.3 kv v w impulse withstand voltage 1.2/50 s 8 kv v e partial discharge extinction voltage rms @ 10 pc 1.3 kv min dcp creepage distance 8 mm dci clearance 8 mm cti comparative tracking index (group i) 600 applications examples according to en 50178 and iec 61010-1 standards and following conditions: over voltage category ov 3 pollution degree pd2 non-uniform feld 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. en 50178 iec 61010-1 dcp, dci, rated insulation voltage nominal voltage basic insulation 1000 v 1000 v reinforced insulation 600 v 400 v v w
page 3/3 14december2012/version 3 lem reserves the right to carry out modifcations on its transducers, in order to improve them, without prior notice www.lem.com dimensions la 150-p (in mm) mechanical characteristics general tolerance 0.5 mm primary through-hole 13.5 x 10 mm fastening & connection of secondary 3 pins 0.6 x 0.6 mm recommended pcb hole ? 1.1 mm connection remarks i s is positive when i p fows in the direction of the arrow. temperature of the primary conductor should not exceed 100c. dynamic performances (di/dt and response time) are best with a single bar completely flling the primary hole. this is a standard model. for different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us.
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