Document 150
50/60 Hz Current Sense 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.
Weight 19 g
Terminations Tin-silver over tin over nickel over copper
Packaging 30 per tray
Isolation (hipot) 2500 Vrms, one minute, between windings
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf
Frequency
Sensed
RT for
DCR max (Ohms)
Inductance1
range2
Part
Turns (N)
current
1.0 Vout
from 10 A I 3
number
pri : sec
min (mH)
1,2 – 3,4 8 – 5
(Hz)
range Iin
in
CS2106L
1 : 500
75
0.007
26
50 – 400
0.5 A – 20 A
68 Ohms
1. Inductance is for the secondary, tested at 1 kHz, 0.1 Vrms.
2. Square wave response deteriorates above and below this frequency.
3. Use the following equation to determine the approximate change in output voltage/ input ampere when varying the terminating resistor:
Vout / Iin = 0.1 × (RT / 68).
4. Ambient temperature range –40°C to +85°C.
5. 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
Dimensions are in
inches
mm
Document 150 Revised 12/29/09