... Guide LEDlightflashphase ADisplay the current of phase A-A,B,C LED no light means display three phase average currentphase BDisplay the ... 6)”then display A,B,C phase current respectively, the correspond LED lights. If A, B,C three LED is unlighted, mean that ... alarm state?When overload or deficient-phase protection occurs, alarm LED lights, and protection circuit activates, the load opens, finally ...