Phase Sequence Relay Circuit Diagram. Three phase voltage and phase sequence phase loss relay k8dt pm protect motors and other equipment from unstable voltages in the power supply system. Phase loss detection while the motor is operating.
Types of phase sequence indicators. Protect motors and other equipment by detecting overvoltages undervoltages phase sequence and phase loss for three phase power supplies. Phase sequence indicators can be classified into two types.
If a phase failure occurs on l1 the control relay cr c ontacts change state.
Rotating type phase sequence indicators. The phase sequence meter is used for the detection of phase sequence in three phase circuits and there are different types of phase sequence indicators that are as follows. The relay will not operate if the input voltage drops below 80 of the minimum input value because l1 and l2 are. Types of phase sequence indicators.
