AC Current transducer APR-B420L IPN = 10 .. 400 A Split-core transducer for the electronic measurement of AC currents (all waveforms), with galvanic isolation between the primary circuit (high power) and the secondary circuit (electronics). Switch selectable measuring ranges and True RMS 4-20mA current output (loop powered). Electrical data Primary Nominal Current IPN (A.t.rms) Output Current IOUT (mA) 10,25,50 50,75,100 100,150,200 200,300,400 Type 4-20 4-20 4-20 4-20 APR APR APR APR RoHS since date code 50 B420L 100 B420L 200 B420L 400 B420L < 350 + 12 .. 24 V DC < 25 mA no limitation Load resistance, with VC = + 24 V DC 1) Supply voltage (loop powered) Output current limitation 2) Overload capability 3) RL VC ISL IP 46354 47009 46317 46291 Accuracy @ IPN, TA = 25C (excluding offset) Linearity error (0 .. IPN) Electrical offset current @ TA = 25C Temperature coefficient of IOE Temperature coefficient of IOUT (% of reading) Response time to 90% of IPN step Frequency bandwidth ( 1 %) L IOE TCIOE TCIOUT tr BW Notes : 1) < 1 % of IPN < 0.5 % of IPN 4 mA 1 A/K 0.1 %/K < 400 ms 30 .. 6000 Hz Load Resistance v s. Supply Voltage Max. Load Resistance vs. Supply Voltage 30 Supply Voltage 25 20 15 10 5 0 0 50 100 150 200 250 300 350 400 Load Resistance 2) 3) * VFD and SCR waveform currents measurement * True RMS output * Split-core type * Loop powered 4-20mA current output * DIN rail or Panel mounting * Switch selectable measuring ranges * Isolated plastic case recognized according to UL94-V0. Advantages Accuracy-Dynamic performance data X Features The output current will never exceed this value for safety and protection reasons. The output value is not valid when measuring above the primary nominal current value. Although the transducer can withstand very high currents, the measuring performance specified in the datasheet is valid within the 4-20 mA output range only. * Large aperture for cable up to O18mm * High isolation between primary and secondary circuits * Eliminates insertion loss * Easy installation 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. 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. Application domain * Energy and Automation Page 1/4 071022/6 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com Current Transducer APR-B420L General data TA TS m IPxx Ambient operating temperature Ambient storage temperature Mass Protection degree - 20 .. + 60 - 20 .. + 85 90 IP20 C C g Isolation characteristics Rated isolation voltage rms 4) 300 with IEC 61010-1 standards and following conditions : - Reinforced isolation - Over voltage category CAT III - Pollution degree PD2 - Heterogeneous field Rms voltage for AC isolation test 5), 50 Hz, 1min 5 Partial discharge extinction voltage rms @ 10 pC 1.5 Impulse withstand voltage 1.2/50 s 6.1 Creepage distance 5.5 Clearance distance 5.5 Comparative tracking index (Group I) 600 Vb Vd Ve Vw dCp dCl CTI V kV kV kV mm mm Notes : 4) If insulated cable is used for the primary circuit, the voltage category could be improved according to the insulation characteristics given by the cable manufacturer. e.g. Cable insulation (primary) Category HAR 05 600V CAT III HAR 07 1000V CAT III 5) Between primary (completely filling the aperture) and secondary. Page 2/4 071022/6 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com Current Transducer APR-B420L Safety and warning notes In order to guarantee safe operation of the transducer and to be able to make proper use of all features and functions, please read these instructions thoroughly! Safe operation can only be guaranteed if the transducer is used for the purpose it has been designed for and within the limits of the technical specifications. Ensure you get up-to-date technical information that can be found in the latest associated datasheet under www.lem.com. Caution! Risk of danger Ignoring the warnings can lead to serious injury and/or cause damage! The electric measuring transducer may only be installed and put into operation by qualified personnel that have received an appropriate training. The corresponding national regulations shall be observed during installation and operation of the transducer and any electrical conductor. The transducer shall be used in electric/electronic equipment with respect to applicable standards and safety requirements and in accordance with all the related systems and components manufacturers' operating instructions. Caution! Risk of electrical shock When operating the transducer, certain parts of the module may carry hazardous live voltage (e.g. primary conductor, power supply). The user shall ensure to take all measures necessary to protect against electrical shock. The transducer is a built-in device containing conducting parts that shall not be accessible after installation. A protective enclosure or additional insulation barrier may be necessary. The transducer shall not be put into operation if the jaw opening is open (split core version) or the installation is not completed. Installation and maintenance shall be done with the main power supply disconnected except if there are no hazardous live parts in or in close proximity to the system and if the applicable national regulations are fully observed. Safe and trouble-free operation of this transducer can only be guaranteed if transport, storage and installation are carried out correctly and operation and maintenance are carried out with care. Page 3/4 071022/6 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com Dimensions AP(R)-B420L (unit : mm, 1mm = 0.0394 inch) Front View Left View 55 16.40 DIN size35.50 69 14.80 Range Selection Switch 4.70 20 40(distance between screws) 21 33.50 37 Axis of aperture 25 18.50 67 Plug-in connector included : XW4B-03C1-H1 (OMRON) 18.50 Bottom View Load 4-20mA (Controller, Meter, etc,) 24 VDC Power (-) Connections * Wires up to 2 mm * Female connector provided (spring terminal blocks) * User-friendly spring-cage connection for no-tool direct conductor connection (+) AP/APR Mechanical characteristics Output Connector 3none2(-) 1(+) Front Range Switch * General tolerance * Primary aperture 1 mm 18.5 mm * Panel mounting * Distance between holes 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. +24VDC OUT Is Ip GND Page 4/4 071022/6 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice. www.lem.com