IPN = 2..200A 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. Electrical data Primary Nominal CurrentAnalogue Output Signal1) IPN (A.t.RMS) Type IOUT (mA) Features RoHS Date Code 2,5 4-20 AKR 5 C420L 10,20,50 4-20 AKR 50 C420L 100,150,200 4-20 AKR 200 C420L Vc Supply voltage (Loop powered) 24 RL Vb Vd Load resistance see power supply diagram Rated voltage (CAT III, PD2) 150 RMS Isolation voltage test, 50 Hz, 1mn 3 f Frequency bandwith JULY 2006 planned JULY 2006 V DC VAC kV AC 20-100 Hz • VFD and SCR waveforms current measurement • True RMS responding • 4-20 mA Current output • Loop powered transducers • Panel mounting • Accurate • Jumper selectable ranges Advantages • Large aperture Accuracy - Dynamic performance data • High isolation between primary and secondary circuits X Accuracy @ IPN, TA=25°C ±1 % tr Response time @ 90% of IPN < 600 mS • Easy to mount Applications TA Ambient operating temperature (0-95% RH) -20 ..+ 50 °C TS Ambient storage temperature -20 ..+ 85 °C • VFD Controlled Loads: VFD output indicates how the motor and attached load are operating. • SCR Controlled Loads: m Mass Safety EMC 90 IEC 61010-1 EN 61326 g Acurate measurement of phase General data angle fired or burst fired (time proportioned) SCRs. • Switching Power Supplies and Note: 1) For 4-20mA output model, no saturation output up to 23 mA. Electronic Ballasts: True RMS sensing is the most Selecting the transducer accurate way to measure power VFD (Variable Frequency Drive) and SCR (Semi Conductor Rectifier) output supply or ballast input power. waveforms are rough approximations of a sine wave. There are numerous spikes and dips in each cycle. AKR transducers use a mathematical algorithm called Options on request “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 • DIN mounting nonlinear loads or in “noisy” power environments. LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM 060816/6 Page 1/2 www .lem.com Dimensions AKR-C420L (unit : mm, 1mm = 0.0394 inch) 61.0 49 24.5 55.4 19 3.2 23.5 23.7 88.9 15 4.5 39 78 Mechanical characteristics • General tolerance ± 1 mm • Primary aperture 19 mm • Panel mounting 2 holes ∅ 4.5mm Distance between holes Power Supply diagram 78 mm Connections • 2 x UNC8 Cylindric Head Remark • Temperature of the primary conductor should not exceed 60°C. 060816/6 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM Page 2/2 www .lem.com