CSN Series closed loop current sensor, measures ac, dc or impulse current, 25 amp-turns nominal, ±56 amp-turns range, miniature housing, 2000 turn

Description

The CSN Series of closed loop current sensors are based on the principles of the Magnetoresistive or Hall effects, and the null balance or zero magnetic flux method (feedback system). The magnetic flux in the sensor core is constantly controlled at zero. The amount of current required to balance zero flux is the measure of the primary current flowing through the conductor, multiplied by the ratio of the primary to secondary windings. This closed loop current is the output from the device and presents an image of the primary current reduced by the number of secondary turns at any time. This current can be expressed as a voltage by passing it through a resistor.

FeaturesPotential Applications

Features Current sensing up to 1275 amps (depending on product listing) Measures ac, dc and impulse currents Competitive cost/performance ratio Rapid response High overload capability High level of electrical isolation between primary and secondary circuits Industrial operating temperature range Small size and weight	Potential Applications Variable speed drives Overcurrent protection Ground fault detectors Current feedback control systems Robotics UPS and telecommunication power supplies Welding power supplies Automotive - Battery management systems Wattmeters

Product Specifications

Product Type	Closed Loop Linear
Sensed Current Type	ac or dc
Sensed Current Range	±56 A
Package Type	Series Connect PCB Mount
Output Type	Current
Continuous Current	±40 A
Operate Current	25 A RMS @ 25 °C
Supply Current	±12 mA + Output
Supply Voltage	±15.0 Vdc
Offset Current	< ±0.3 mA
Offset Current Drift	< ±0.6 mA
Coil Resistance	190 Ohm
Response Time	< 1 µs
Coil Turns	2000
Output Nominal	12.5 mA
Operating Temperature	-40 °C to 75 °C [-40 °F to 167 °F]
Storage Temperature	-40 °C to 90 °C [-40 °F to 194 °F]
Measuring Resistance	193 Ohm min., 722 Ohm max.
Housing Material	Glass-filled PBT (UL94-V0)
Mounting	PCB on 9 Pins
Pinout Style	3 Pin
Accuracy	±1.0 %
Availability	Global
Comment	Low cost miniature 25 A sensor.
UNSPSC Code	411121
UNSPSC Commodity	411121 Transducers
Series Name	CSN