Document 150 50/60 Hz Current Sensing Transformer This Coilcraft current sense transformer is intended for use in measuring 50/60 Hz line currents from 0.5 to 20 Amperes rms. Typical application shown below yields an output of 0.1 Volt per Ampere. The sensitivity may be changed by adjusting the value of the terminating resistance (RT). These parts also can be used to measure 400 Hz line currents. To request free evaluation samples, contact Coilcraft or visit www.coilcraft.com. Part number Turns (N) pri : sec Inductance1 min (mH) CS2106L 1 : 500 75 1. 2. 3. 4. 5. DCR max (Ohms) 1,2 – 3,4 8–5 0.007 26 Frequency range2 (Hz) Sensed current range Iin RT for 1.0 Vout from 10 A Iin3 50 – 400 0.5 A – 20 A 68 Ohms Inductance is for the secondary, tested at 1 kHz, 0.1 Vrms. Square wave response deteriorates above and below this frequency. Varying terminating resistance increases or decreases output Voltage/Ampere in approximate proportion to the ratio RT / 68. Operating temperature range –40°C to +85°C. Electrical specifications at 25°C. Typical Circuit 1 2 I in 3 4 8 RT CS2106 Vout 5 Typical Response (with RT = 68 Ohms) Vout (Volts rms) 2.0 1.5 1.0 0.5 0 0 5 10 Current (Amperes rms) 15 20 Weight: 19 g Terminations: Tin-silver over copper Packaging: 30 per tray Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 Document 150 Revised 12/29/09