DHR 400 C420

IPN = 100..1000 A AC/DC Current transducer DHR-C420 The transducer for the electronic measurement DC & distorted AC waveforms current, with galvanic isolation between the primary (High power) and the secondary circuits (Electronic circuit). True RMS 420mA current output. Electrical data Primary Nominal DC & AC Current I PN (A.t.RMS) Primary AC Current Max. Peak Value I P (A) Analogue Output Signal I OUT (mADC) 600 600 1000 1000 1800 1800 1800 4-20 4-20 4-20 4-20 4-20 4-20 4-20 100 200 300 400 500 600 1000 RL VC IC Load resistance Supply voltage (loop powered) Current consumption Limitation of output current Overloaded input current (Ampere Turns) Features Type • VFD and SCR waveforms current measurement DHR 100 C420 DHR 200 C420 DHR 300 C420 DHR 400 C420 DHR 500 C420 DHR 600 C420 DHR 1000 C420 • True RMS output • 4-20mA current output • Panel mounting • Eliminates insertion loss < 300 Ω +20 .. 50 V DC 30 mA + IOUT < 25 mA 30000 A.t Accuracy-Dynamic performance data X ε L IOE IOT TCε G tr f Accuracy @ IPN, TA = 25°C (without offset) Linearity (1% of IPN .. ± IPN) Electrical offset current, TA = 25°C Thermal drift of IOE (-20..+60 °C) (-40..+70 °C) Thermal drift of the gain (% of reading) Response time @ 90% of IP Frequency bandwidth (±1%) Ambient operating temperature Ambient storage temperature Mass Protection type UL94 classification • Large aperture for cable up to Ø32mm • High isolation between primary and secondary circuits • Easy to mount < ±1 % of IPN < ±1.0 % of IPN 4 mA ±1.6 µA/K ±3.2 µA/K ±0.1 %/K < 150 ms DC 20..6000Hz 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 General data TA TS m Advantages -40 .. +70 -40 .. +85 260 IP20 V0 °C °C g 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. Notes : Installation and maintenance should be done with power supply disconnected. The operator must have accrediation to install this material. The users must take care of all protection gurantee against electrical shock. 050526/4 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM Components Page 1/3 www.lem.com Current Transducer DHR-C420 Isolation characteristics Vb Rated Voltage 1000 V with IEC 61010-1 acc. to the 61326 standards and following conditions : - Single insulation - Over voltage category CAT III - Pollution degree PD2 - None uniform field R.m.s. voltage for AC insulation test, 50Hz, 1min 5 kV Creepage distance 11 mm Clearance distance 11 mm Comparative tracking index (Group I) 600 Vd dCp dCl CTI Notes : Output polarity with DC input Output in mA 20 4 -Ipn +Ipn 050526/4 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM Components Page 2/3 www.lem.com Dimensions DHR-C420 (in mm. 1 mm = 0.0394 inch) 25 70 32 4. 60 70 60 40 10 15 25 2 2.2 8 6.8 0 8.30 6 .80 4 .60 33 .80 2 .50 90 4 7 6 78 Connections Mechanical characteristics • Wires up to 2 mm ∅ • General tolerance ±1 mm • Primary aperture • Panel mounting ∅ 32.0 mm 4 holes ∅ 4.6 mm • Distance between holes 70 mm & 78 mm (see above drawings) DHR Output Connector 1(+) 2(out) 3(none) 4(GND) For panel mounting, replace M4 screws by new one (not supplied) with appropriate length to panel´s thickness. 24 VDC Power Safety (+) (-) (-) This transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the following manufacturer's operating instructions. (+) Load (Controller, meter etc) +24VDC OUT Is Ip GND Caution, risk of electrical shock When operating the transducer, certain parts of the module can carry hazardous voltage (eg. primary busbar, power supply). Ignoring this warning can lead to injury and/or cause serious damage. This transducer is a built-in device, whose conducting parts must be inaccessible after installation. A protective housing or additional shield could be used. Main supply must be able to be disconnected. 050526/4 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. LEM Components Page 3/3 www.lem.com