Current Transducer LA 03..20-PB IPN = 3 .. 20 A For the electronic measurement of currents: DC, AC, pulsed, mixed, with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit). Electrical data Primary nominal r.m.s. current 1) IPN (A) Primary current, measuring range IP (A) 3 5 10 15 20 ± 4.5 ± 7.5 ± 15 ± 22.5 ± 30 VC IC R IS VOUT RL Primary Current Limitation 3) (A) Primary Conductor Diameter (mm) 3 3 5 7.5 10 0.5 0.5 0.65 0.8 1.0 Supply voltage (± 5 %) Current consumption app. Isolation resistance @ 500 VDC Output voltage @ ± IPN, RL = 10 kΩ, TA = 25°C Load resistance Features Type • Closed loop (compensation) current LA LA LA LA LA transducer using the Hall effect 03-PB 05-PB 10-PB 15-PB 20-PB • Voltage output • Printed circuit board mounting ± 15 V 20mA + IPN/1200mA > 500 MΩ ±4 V > 10 kΩ Accuracy-Dynamic performance data X ε Accuracy @ IPN, TA = 25°C (without offset) Linearity error (0 .. ± IPN) Electrical offset voltage, TA = 25°C Hysteresis offset voltage @ IP = 0; after an excursion of 1 x IPN Thermal drift of VOE (-10..+80°C) (-20..-10°C) Thermal drift of the gain (% of reading) (-10..+80°C) (-20..-10°C) Response time @ 90% of IP Frequency bandwidth (- 1dB)2) L VOE VOH VOT TCε G tr f <± 1.5 <± 1 <± 30 <± 15 <± 1 <± 2 <± 0.04 <± 0.08 <3 DC .. 150 % of IPN % of IPN mV mV mV/K mV/K %/K %/K µs kHz General data TA TS m Notes : 2) 3) • • • • • • • Excellent accuracy Very good linearity Low temperature drift Optimized response time Wide frequency bandwidth No insertion losses High immunity to external interference • Current overload capacity Applications • AC variable speed drives and servo motor drives • Static converters for DC motor drives • Battery supplied applications • Uninterruptible Power Supplies (UPS) Ambient operating temperature Ambient storage temperature Mass 1) Advantages - 20 .. + 80 - 30 .. + 85 < 12 °C °C g • Switched Mode Power Supplies (SMPS) • Power supplies for welding applications Calibration for 4V output is carried out at the primary norminal r.m.s. current. Derating is needed to avoid excessive core heating at high frequency. Primary current is limited by primary wire size. Permanent primary current should not exceed the specified value. LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM Industrial 051102/6 Page 1/3 www.lem.com Current transducer LA 03..20-PB Isolation characteristics Vd dCp dCl CTI R.m.s. voltage for AC isolation test, 50 Hz, 1 mn Creepage distance Clearance distance Comparative Tracking Index (Group IIIa) 2.5 4) > 10 > 10 > 220 kV mm mm Application examples According to EN 50178 and CEI 61010-1 standards and following conditions : · Over voltage category · Pollution degree PD2 · Non-uniform field OV 3 EN 50178 CEI 61010-1 Rated isolation voltage Nominal voltage Single isolation 1000 V Cat III 1000 V rms Reinforced isolation 500 V Cat III 300 V rms dCp, dCl, Vw Notes : 4) Between primary and secondary 051102/6 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM Industrial Page 2/3 www.lem.com Dimensions LA 03..20-PB (in mm. 1 mm = 0.0394 inch) Front V ie w Right V ie w 19 +/-1 6 +/-1 4.5 +/-1 0.5 20 +/-1 15 +/-1 2 4 3 2 1 Primary Conductor See the attached table 6 +/-1 5 4-0.5*0.25 Signal Pins 4 3 2 1 3-p=2.54 2.5 +/-1 11 +/-1 6 Bottom V ie w T erminal Pin Identification Primary Conductor Part No. Diameter LA 03-PB 03-P 0.5 d LA 05-PB 05-P 0.5 d LA 10-PB 10-P 0.65 d LA 15-PB 15-P 0.8 d LA 20-PB 20-P 1.0 d Signal Pins 1 -Vcc 2 0V 3 +Vcc 4 Output Direction of Current Flow 5 (+) 6 (-) Safety This transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the following manufacturer's 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 built-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. 051102/6 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM Industrial Page 3/3 www.lem.com