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CSNF661

CSN Series closed loop current sensor, measures AC, DC or

impulse current, 100 A nominal, ± 150 amp range, offset

pin, 1000 turn

Features

Current sensing up to 1200 amps

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

Typical 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

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.

Page 1 of 4

Datasheet -- CSNF661

31/08/2006

http://catalog.sensing.honeywell.com/printfriendly.asp?FAM=current&PN=CSNF661