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| AC Current transducer AKR-C420L 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 CurrentAnalogue Output Signal1) IPN (A.t.RMS) 2,5 10,20,50 100,150,200 Vc RL Vb Vd f IOUT (mA) 4-20 4-20 4-20 AKR 5 C420L AKR 50 C420L AKR 200 C420L 24 Type RoHS Date Code JULY 2006 planned JULY 2006 V DC VAC kV AC Hz Features * VFD and SCR waveforms current measurement * True RMS responding * 4-20 mA Current output * Loop powered transducers * Panel mounting * Accurate * Jumper selectable ranges 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 20-100 Advantages * Large aperture * High isolation between primary and secondary circuits Accuracy - Dynamic performance data X tr Accuracy @ IPN, TA=25C Response time @ 90% of IPN 1 < 600 % mS * Easy to mount Applications * VFD Controlled Loads: VFD output indicates how the motor and 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 is the most accurate way to measure power supply or ballast input power. General data TA TS m Ambient operating temperature (0-95% RH) Ambient storage temperature Mass Safety EMC 1) -20 ..+ 50 -20 ..+ 85 90 IEC 61010-1 EN 61326 C C g Note: For 4-20mA output model, no saturation output up to 23 mA. 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 060816/6 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-C420L (unit : mm, 1mm = 0.0394 inch) 61.0 19 55.4 24.5 3.2 23.5 88.9 49 23.7 4.5 39 78 Mechanical characteristics * General tolerance * Primary aperture * Panel mounting Distance between holes 1 mm 19 mm 2 holes 4.5mm 78 mm Power Supply diagram Connections * 2 x UNC8 Cylindric Head Remark * Temperature of the primary conductor should not exceed 60C. 15 060816/6 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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