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). Preliminary Electrical data Primary nominal current (A) 3 5 10 15 20 Primary nominal r.m.s. current IPN (A) 3 3 5 7.5 10 Primary current Primary Conductor measuring range Diameter IP (A) (mm) 4.5 7.5 15 22.5 30 0.5 0.5 0.65 0.8 1.0 Type * Closed loop (compensation) current transducer using the Hall effect LA LA LA LA LA 03-PB 05-PB 10-PB 15-PB 20-PB 15 V Supply voltage ( 5 %) Current consumption app. 20mA+ IPN/1200 mA R.m.s. voltage for AC isolation test, 50/60Hz,1mn 2.5 kV Isolation resistance @ 500 VDC > 500 M Output voltage @ IPN, RL = 10 k, TA = 25C 4 V Load resistance > 10 k VC IC Vd R IS VOUT RL Accuracy-Dynamic performance data X L VOE VOH VOT TC G tr f Accuracy @ IPN, TA = 25C (without offset) Linearity (0 .. IPN) Electrical offset voltage, TA = 25C Hysteresis offset voltage @ IP = 0; after an excursion of 1 x IPN Thermal drift of VOE max. Thermal drift(% of reading) Response time @ 90% of IP Frequency bandwidth (- 1dB)2) Features < 1.5 % of IPN < 1 % of IPN < 30 mV < 15 mV 1 mV/K < 0.04 %/K <3 s DC .. 150 kHz * Voltage output * Printed circuit board mounting 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 capacity 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 General data TA TS m Notes : Ambient operating temperature Ambient storage temperature Mass (SMPS) - 10 .. + 80 C - 15 .. + 85 C < 12 g EN 50178 approval pending 1) Calibration for 4V output is carried out at the primary norminal current. 2) Derating is needed to avoid excessive core heating at high frequency. * Switched Mode Power Supplies (SMPS) * Power supplies for welding applications 010809/3 LEM Components www.lem.com LA 03 ... 20-PB Front View Right View 19 +/-1 2 6 +/-1 4.5 +/-1 0.5 20 +/-1 15 +/-1 4 3 2 1 Primary Conductor See the attached table 6 +/-1 5 4-0.5*0.25 Signal Pins 3-p=2.54 2.5 +/-1 11 +/-1 6 Bottom View Terminal Pin Identification Primary Conductor Part No. Diameter PB LA 03-P 0.5 d PB LA 05-P 0.5 d PB LA 10-P 0.65 d PB LA 15-P 0.8 d PB LA 20-P 1.0 d Signal Pins 1 -Vcc 2 0V 3 +Vcc 4 Output Direction of Current Flow 5 (+) 6 (-) UNIT : mm SCALE : 2/1 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.