AC/DC Current transducer DHR-C420 I = 100..1000 A PN 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 4- 20mA current output. Electrical data Features Primary Nominal Primary AC Current Analogue Output Type DC & AC Current Max. Peak Value Signal VFD and SCR waveforms current I (A.t.RMS) I (A) I (mADC) PN P OUT measurement 100 600 4-20 DHR 100 C420 True RMS output 200 600 4-20 DHR 200 C420 300 1000 4-20 DHR 300 C420 4-20mA current output 400 1000 4-20 DHR 400 C420 Panel mounting 500 1800 4-20 DHR 500 C420 Eliminates insertion loss 600 1800 4-20 DHR 600 C420 1000 1800 4-20 DHR 1000 C420 R Load resistance < 300 L Advantages V Supply voltage (loop powered) +20 .. 50 V DC C I Current consumption 30 mA + I Large aperture for cable up to C OUT Limitation of output current < 25 mA 32mm Overloaded input current (Ampere Turns) 30000 A.t High isolation between primary and secondary circuits Accuracy-Dynamic performance data Easy to mount X Accuracy I , T = 25C (without offset) < 1 % of I PN A PN e Linearity (1% of I .. I ) < 1.0 % of I L PN PN PN Applications I Electrical offset current, T = 25C 4 mA OE A I Thermal drift of I (-20..+60 C) 1.6 A/K OT OE VFD Controlled Loads: (-40..+70 C) 3.2 A/K VFD output indicates how the motor TCe Thermal drift of the gain (% of reading) 0.1 %/K G and attached load are operating. t Response time 90% of I < 150 m s r P SCR Controlled Loads: f Frequency bandwidth (1%) DC 20..6000Hz Acurate measurement of phase angle fired or burst fired (time General data proportioned) T Ambient operating temperature -40 .. +70 C A SCRs. Current measurement gives T Ambient storage temperature -40 .. +85 C S faster response than temperature m Mass 260 g measurement. Protection type IP20 UL94 classification V0 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. Page 1/3 LEM Components www.lem.comCurrent Transducer DHR-C420 Isolation characteristics V Rated Voltage 1000 V b 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 V R.m.s. voltage for AC insulation test, 50Hz, 1min 5 kV d dCp Creepage distance 11 mm dCl Clearance distance 11 mm CTI Comparative tracking index (Group I) 600 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. Page 2/3 LEM Components www.lem.com