Function and Usage
The XJ3 series phase failure and phase sequence protection relay is used in three-phase AC circuits for overvoltage, undervoltage, phase failure protection, and for phase sequence protection in non-reversible drive equipment. It has the characteristics of reliable performance, wide applicability, and convenient use.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Protection Function | | XJ3-G XJ3-G1 XJ3-D |
| Phase Failure Phase Sequence | |
| Three-phase voltage imbalance ≥8%-13% | |
| Overvoltage Protection (AC) | - 380V-460V 1.5s-4s (adjustable) |
| Undervoltage Protection (AC) | - 300V-380V 2s-9s (adjustable) |
| Rated Control Circuit Power Supply Voltage | | AC380V, 50Hz AC 380V 50Hz |
| Number of Contacts | | 1 Normally Open 1 Normally Closed 1 Set of Transfer |
| Contact Capacity | | Ue/le: AC-15 240V/0.75A, 415V/0.47A Ith:5A Ue/le: 415V/0.47A Ith:3A |
| Phase Failure and Phase Sequence Protection | Action Time | ≤2s ≤1s |
| Electrical Life | | 1×10⁵ |
| Mechanical Life | | 1×10⁶ |
| Environmental Temperature | | -5℃~+40℃ |
| Installation Method | | Device Type or Rail Type 35mm Rail Installation or Hole Punch Installation |
| Note: In the application circuit example diagram, the protection relay only takes effect when a phase failure occurs between the terminal 1, 2, 3 and the three-phase power supply A, B, C. | | |
