XJ11 Three phase AC protection relayDetailed product description：

XJ11 series voltage phase sequence multifunctional protector

1. Protection features
① Dynamic phase loss and static phase loss protection: Refers to a delay of 2 seconds in action when any phase of the protected line experiences a phase failure, whether in operation or non operation. The form of the indicator light is: red light on and priority given;
② Wrong phase protection: a protective measure to prevent the wrong phase sequence connection of L1, L2, and L3 three-phase AC, with a delay of 2 seconds. The indicator light form is: red light on;
③ Overvoltage protection: refers to the delay of 3-8S when the voltage of the protected circuit is higher than the set value. The indicator light form is: yellow light on;
④ Undervoltage protection: refers to the action of delaying 3-8S when the voltage of the protected line is lower than the set value. The indicator light form is: yellow light on;
⑤ Voltage imbalance protection: refers to a protective measure in which three-phase voltage imbalance will affect the safe operation of the line. Voltage imbalance rate=When 100% is higher than 10%, delay the action for 2 seconds. The form of the indicator light is: the red light for phase loss is on, and priority is given.
2. Performance characteristics
① The protection function of the protector is not affected by the current size of the line or load, the impact current, unbalanced current, and the nature of the load. Capable of long-term operation with full performance and all weather conditions. Power consumption not exceeding 10W;
② There is no requirement for the motor wiring method when used for motor protection;
③ This product complies with GB/T 14048.1-2000, GB14048.5-2001 eqv IEC60947-1:1999;
④ The EMC of this product complies with the measurement methods and allowable values of radio interference characteristics in GB4343-1995.
3. Job characteristics
① The three-phase wiring of L1, L2, and L3 is correct, the green light of the protector is on, and the internal relay is closed; If the phase sequence is connected incorrectly, the red light of the protector will light up. As long as any two phases of L1, L2, and L3 are exchanged, the protector can recognize the phase sequence and work normally. When the red light lights up and the internal relay does not close after the protected circuit is working normally, it should be considered as a phase sequence misconnection of the external circuit, and the protector has anti misconnection protection function;
② When the three-phase overvoltage or undervoltage of L1, L2, and L3 occurs, the yellow light will turn on, the green light will not turn on, and the internal relay will release; When the voltage returns to normal, the green light is on and the internal relay is engaged;
③ L1, L2, and L3 are connected to three-phase AC voltage, while NO and COM are normally open contacts; NC and COM are normally closed contacts. Connect the wiring terminals directly using wires.