GE Multilin MLJ synchronous inspection relay

Main applications: including connecting the generator to the system, re establishing the connection between two parts of the system, manually closing circuit breakers, automatic reclosing of circuit breakers after relay tripping, etc.
Function: As a digital synchronous check relay, it can measure bus and line voltage, test voltage difference, frequency slip, and phase angle between two voltages. When all values are within the set range and maintained for a set time, it provides output to allow the circuit breaker to close; If the conditions are not met, a closed condition failure signal will be issued one minute later.
Operation mode: divided into continuous mode (continuous check synchronization) and manual mode (starting synchronization control when voltage is applied through manually activated input).
Other features: Equipped with two undervoltage units to control synchronization function, allowing synchronous operation only when both voltages are higher than the set value; It also has DLDB (Dead Line Dead Bus), DLLB (Dead Line Active Bus), and LLDB (Active Line Dead Bus) functions, which can be independently set to select any combination.