current sense transformers document 132 document 132 revised 06/25/15 these low cost coilcraft current sensing transformers are designed for use up to 1 mhz. they incorporate the current and sense windings in one small, encapsulated package requiring minimum board space. coilcraft current sensing transformers are designed to meet ul/csa/iec 60950 reinforced insulation specif - cation and provide 3 mm creepage/clearance between primary and secondary windings. winding to winding isolation (hipot) is 3750 vrms, tested for one minute. applications include feedback control, overload sensing, detecting load drop or shutdown, and proportional output. coilcraft designers kit p403 contains the three stan - dard current sensing transformers, sensor-only versions of each, plus two 50/60hz current sensors. to order, contact coilcraft or visit http://order.coilcraft.com. dcr max frequency volt-time sensed terminating turns (n) inductance 1 (ohms) range product 2 current i in resistance r t 3 part number pri : sec min (mh) pri sec (khz) (vsec) max (a) (ohms) cs4050v-01l 1 : 50 5 0.001 0.7 3 C 1000 149 35 1.4 cs4100v-01l 1 : 100 20 0.001 1.4 2 C 1000 298 35 2.9 CS4200V-01L 1 : 200 80 0.001 4.0 1 C 1000 596 35 5.7 cs4 0v -al xx xxxx y max 0.75 19,05 0.105/0.150 2,67/3,81 0.77 19,56 0.03 0,76 inter nal code 0.40 0.01 10,16 0,25 4 4 1 1 2 2 3 3 max c l c l max 0.57 14,48 0.052 1,321 0.041 1,041 0.069 1,76 0.088 2,23 recommended pc boar d la y out (vie wed fr om top) 0.20 0.005 5,08 0,125 0.30 0.005 7,62 0,125 0.060 0.460 1,52 11,68 weight: 8.8 C 9.3 g terminations: tin-silver over copper packaging: 29 per tube 1. inductance is for the secondary, measured at 15.75 khz, 1 vrms. 2. volt-time product is for the secondary, based on 2000 gauss. 3. terminating resistance (r t ) value is based on 1 volt output with 35 amps fowing through the primary. varying terminating resistance increases or decreases output voltage/ampere according to the following equation: r t = v out n sec / i in 3 sec (n tur ns) pr i (1 tur n) 2 1 4 r t v out i in typical circuit 4. ambient temperature range C40c to +85c. 5. electrical specifcations at 25c.
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