In Electrical System, sometime without identification of Phase Sequence it is impossible to proceed further. The Phase Sequence Indicator is used to determine the Phase Sequence R, Y & B of 3 Phase Voltage. It is important that Phase Sequence is known properly prior to energizing electrical motor & other equipment, as incorrect connection could cause damage to the equipment. The correct operation of measuring instrument like 3 Phase Energy Meter, 3 Phase Power Meter and Automatic Control of devices also depend on the Phase Sequence.

In Electrical System, sometime without identification of Phase Sequence it is impossible to proceed further. The Phase Sequence Indicator is used to determine the Phase Sequence R, Y & B of 3 Phase Voltage. It is important that Phase Sequence is known properly prior to energizing electrical motor & other equipment, as incorrect connection could cause damage to the equipment. The correct operation of measuring instrument like 3 Phase Energy Meter, 3 Phase Power Meter and Automatic Control of devices also depend on the Phase Sequence.