Voltage Transducer LV 25-P I = 10 mA PN For the electronic measurement of currents: DC, AC, pulsed..., V = 10 .. 500 V with galvanic separation between the primary circuit and the secondary PN circuit. HV HV Features Electrical data I Primary nominal rms current 10 mA Closed loop (compensated) PN I Primary current, measuring range 0 .. 14 mA current transducer using the Hall PM R Measuring resistance R R effect M M min M max with 12 V 10 mA 30 190 Insulating plastic case recognized max 14 mA 30 100 according to UL 94-V0. max with 15 V 10 mA 100 350 max Principle of use 14 mA 100 190 max I Secondary nominal rms current 25 mA SN For voltage measurements, K Conversion ratio 2500 : 1000 N a current proportional to the U Supply voltage ( 5 %) 12 .. 15 V C measured voltage must be I Current consumption 10 ( 15 V) + I mA C S passed through an external resistor R which is selected by 1 Accuracy - Dynamic performance data the user and installed in series with the primary circuit of the X Overall accuracy I , T = 25 C 12 .. 15 V 0.9 % G PN A transducer. 15 V ( 5 %) 0.8 % d d Linearity error < 0.2 % Cl Cp L Advantages Typ Max R 1 Excellent accuracy I Offset current I = 0, T = 25 C 0.15 mA HV O P A Very good linearity I Temperature variation of I 0 C .. + 25 C 0.06 0.25 mA OT O HV U Low thermal drift + 25 C .. + 70 C 0.10 0.35 mA C I R 1) S Low response time t Step response time M to 90 % of I 40 s r PN High bandwidth General data High immunity to external U C interference T Ambient operating temperature 0 .. + 70 C A Low disturbance in common T Ambient storage temperature - 25 .. + 85 C S mode. R Resistance of primary winding T = 70 C 250 P A R Resistance of secondary winding T = 70 C 110 Applications S A m Mass 22 g AC variable speed drives and Standards EN 50178: 1997 servo motor drives UL 508: 2010 Static converters for DC motor drives Battery supplied applications Uninterruptible Power Supplies 1) Note: R = 25 k (L/R constant, produced by the resistance and inductance of 1 (UPS) the primary circuit). Power supplies for welding applications. Application domain Industrial. N 97.27.19.000.0 Page 1/4 12August2014/version 19 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.comVoltage Transducer LV 25-P Insulation coordination 1) U Rms voltage for AC insulation test, 50 Hz, 1 min 2.5 kV d Impulse withstand voltage 1.2/50 s 16 kV W Min d Creepage distance 19.5 mm Cp d Clearance 19.5 mm CI CTI Comparative tracking index (group IIIa) 175 1) Note: Between primary and secondary. 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 d , d , Rated insulation voltage Nominal voltage Cp CI W Basic insulation 1600 V 1600 V Reinforced insulation 800 V 800 V Safety This transducer must be used in limited-energy secondary circuits according to IEC 61010-1. 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 2/4 12August2014/version 19 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice www.lem.com