OAR1R01JP Datasheet, PDF (37/58 Pages) Token Electronics Industry Co., Ltd. – Chip Current Sense / Open-Air Current Shunts / Axial Current Sense Resistors

TOKEN
FL Current Shunt Resistors
Current Shunt
Resistors
Token’s Shunt Resistors (FL)
for high-current applications aid precision measurement.
Preview
Current shunt resistors are low resistance precision
resistors used to measure AC or DC electrical
currents by the voltage drop those currents create
across the resistance. Sometimes called an
ammeter shunt, it is a type of current sensor.
A wide range of precision shunts, designed for
use with kilowatt-hour meters and other
high-current applications where a high level
of accuracy is required, is now available from
Token Electronics.
The interchangeable shunts (FL) are used to
multiply the measuring range of measuring
instruments and designed for PCB and busbar mounting, are manufactured from electron beam welded copper
and manganin, and have low temperature coefficients. Featuring low inductance values, shunts FL series can
handle permanent currents of up to 10000A at voltage 75 mV.
FLQ-54 type shunt is made of precision alloy board. It’s copper terminals spot welded by silver alloy ensure
extremely high electric capability. The construction provides a kind of excellent stability and high overloaded
ability non-inductive resistor, applied widely as current limited, current balance or sampling sense in
communication system, electric equipment and auto-controlling electrical circuit.
The FL Series is available in bulk packaging and is RoHS compliant and lead free. For non-standard technical
requirements and special applications, please contact us with your specific needs.
Power Rating : Watts (W) = Current (I2) x Resistance Value (R)
- The heat produced is power measured in Watts (W).
- In practice current shunts are often rated to be used continuously at only 2/3 of their “rated current”.
- Because current shunts are resistors and dissipate heat from the current flowing through them, they get hot.
- Since that heat can change their resistance and even permanently damage the shunt, current shunts are often
given a power rating or a derating factor.
Calculate Current : Current (I) = Voltage (V) / Resistance Value (R)
- Then knowing the resistance of the current shunt you can calculate the current using Ohm’s law.
- By inserting a current shunt into a circuit whose current you want to measure your can find the current by
measuring the voltage drop across the shunt.
Version 2010
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