Measuring/monitoring relays | cosPhi Monitors
Task
Identification of the underloads of a machine.
Solution
The cosPhi monitor is used to detect an underload. The response value and the response time are adjustable. It can also be used in conjunction with a frequency converter (frequency 2 to 200 Hz). The monitoring takes place through the detection of the phase shift between current and voltage. This phase angle shifts with the load on a motor.