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| AC Current transducer AKR-B420L A Split Core transducer for the electronic measurement AC waveforms current, with galvanic isolation between the primary (High power) and the secondary circuits (Electronic circuit). Jumper selectable ranges and True RMS 4-20mA current output. IPN = 2..200A Electrical data Primary Nominal Current IPN (A.t.RMS) 2,5 10,20,50 100,150,200 Vc RL Vb Vd f Analogue Output Signal1) IOUT (mA) 4-20 4-20 4-20 AKR 5 B420L Type RoHS Date Code JUNE 2006 Features * VFD and SCR waveforms current measurement * True RMS responding * Split core box * Current output * Loop powered transducers * Panel mounting * Jumper selectable ranges AKR 50 B420L planned AKR 200 B420L planned 24 V DC V AC kV AC Hz Supply voltage (Loop powered) Load resistance see power supply diagram Rated voltage (CAT III, PD2) 150 RMS Isolation voltage test, 50 Hz, 1mn 3 Frequency bandwith 10-400 Advantages * Large aperture * High isolation between primary and secondary circuits * Easy to mount Accuracy - Dynamic performance data X tr Accuracy @ IPN, TA=25C Response time @ 90% of IPN 1 < 600 % mS Applications * VFD Controlled Loads: VFD output indicates how the motor and General data TA TS m Ambient operating temperature (0-95% RH) Ambient storage temperature Mass Safety EMC - 20 ..+ 50 - 20 ..+ 85 120 IEC 61010-1 EN 61326 C C g attached load are operating. * SCR Controlled Loads: Acurate measurement of phase angle fired or burst fired (time proportioned) SCRs. * Switching Power Supplies and Electronic Ballasts: True RMS sensing Note: 1) For 4-20mA output model, no saturation output up to 23 mA. is the most accurate way to measure power supply or ballast input power. Selecting the transducer VFD (Variable Frequency Drive) and SCR (Semi Conductor Rectifier) output waveforms are rough approximations of a sine wave. There are numerous spikes and dips in each cycle. AKR transducers use a mathematical algorithm called "True RMS," which integrates the actual waveform over time. True RMS is the only way to accurately measure distorted AC waveforms. Select AKR transducers for nonlinear loads or in "noisy" power environments. Options on request * DIN mounting 060816/5 Page 1/2 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM www .lem.com Dimensions AKR-B420L (unit : mm, 1mm = 0.0394 inch) 61 21.7 13 57.2 3.2 13 21.7 89.7 61 30 4.5 77.3 Mechanical characteristics * General tolerance * Primary aperture * Panel mounting Distance between holes 1 mm 21.7 mm sq. 2 holes 4.5mm 77.3 mm Power Supply diagram Connections * 2 x UNC8 Cylindric Head Remark * Temperature of the primary conductor should not exceed 60C. 060816/5 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. Page 2/2 LEM www .lem.com |
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