Current Sensor
Tags: current sensor, current sensor arduino, current sensor circuit, current sensor ic, current sensor relay
How Current transmitter can be used for motor protection, and how is it installed?
Where to install the current transmitter- in MCC or elsewhere?
The current transmitter to which you referr may be a 4-20ma industrial control signal. Such a signal is scaled to represent a physical property like a temperature , voltage , flow rate or inthis case an amperage draw by a motor..
Motors have thermal overload and over current trips that are mechanical in nature and built into the motor control.
It is possible to use a PLC and monitor the current flow of a motor. The current flow sensor would most likely be a current transformer that connects to a 4-20ma current transmitter. And would be installed in the motor starter(control) located in the MCC. The 4-20ma signal is then processed by a PLC located nearby which can run a program designed to control the motor and limit the motor operation based on that current reading. The PLC can also pass information to/from a central control room and operators can remotely control teh operation of the motor via HMI (Human Machine Interface) .
Hall-Effect Based Current Sensors