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| AC Current transducer APR-B420L Split core transducer for the electronic measurement distorted AC waveforms current, with galvanic isolation between the primary (High power) and the secondary circuits (Electronic circuit). Switch selectable ranges and True RMS 4-20mA current output. IPN = 10 .. 400 A Preliminary Electrical data Primary Nominal Current IPN (A.t.RMS) 10,25,50 50,75,100 100,150,200 200,300,400 RL VC Vd Analogue Output Signal IOUT (mA) 4-20 4-20 4-20 4-20 Type Features * VFD and SCR waveforms current measurement * True RMS output * Split core type * Loop powered 4-20mA current output * DIN mounting & Panel mounting * Eliminates insertion loss * Switch selectable ranges APR 50 B420L APR 100 B420L APR 200 B420L APR 400 B420L < 350 +24 5 < 25 V DC kV mA Load resistance Supply voltage (loop powered) R.m.s. voltage for AC isolation test, 50/60Hz, 1 mn Limitation of output current Advantages * Large aperture for cable up to O18mm * High isolation between primary and Accuracy-Dynamic performance data secondary circuits * Easy to mount < 1 % of IPN < 0.5 % of IPN 4 mA 1 A/K 0.1 %/K < 1000 ms 10 .. 6000 Hz X L IOE IOT TC G tr f Accuracy @ IPN, TA = 25C (without offset) Linearity (0 .. IPN) Electrical offset current, TA = 25C Thermal drift of IOE Thermal drift of the gain (% of reading) Response time @ 90% of IP Frequency bandwidth (-3 dB) 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) General data TA TS m Ambient operating temperature Ambient storage temperature Mass Protection type Reliable isolation according to EN50178, EN61010 Creepage distance EMC in accordance with EN50082-2 Plastic according to UL94V0, CTI 1 -20 .. +60 C -20 .. +85 C 90 g IP20 300 V AC > 5.5 mm SCRs. Current measurement gives faster response than temperature measurement. * Switching Power Supplies and Electronic Ballasts: True RMS sensing is the most accurate way to measure power supply or ballast input power. Notes : Installation and maintenance should be done with power supply disconnected. 030708/0 LEM Components www.lem.com Dimensions AP(R)-B420L (unit : mm, 1mm = 0.0394 inch) Mechanical characteristics * General tolerance * Primary aperture * Panel mounting * Distance between holes 1 mm 18.5 mm 2 holes 4.0 mm 40.0 mm For panel mounting, replace M4 screws by new one (not supplied) with appropriate length to panels thickness. Connections * Wires up to 2 mm 24 VDC P ower 4-20mA Load (C o n troller, (+) (-) M e te r, e tc ,) Load Resistance vs. Supply Voltage (-) (+) 30 Supply Voltage 25 20 15 10 5 0 0 100 200 Load Resistance 300 400 A P /A P R O u tp u t C o n n e c to r 3 n o n e 2 (-) 1 (+) F ront R a n g e S w itc h LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. |
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