This monitoring relay provides phase sequence and asymmetry detection for industrial 3-phase power systems.
🔧 Technical Highlights:
- Voltage Range: 208–480 VAC
- Asymmetry: 30% fixed
- Delays: ON < 750 ms | OFF 100 ms
- Output: 1 C/O
✅ Benefits:
- Reliable fixed-level fault detection
- Quick trip reduces equipment damage
- Compact and cost-effective
🚀 Applications:
- Generators
- Three-phase machinery
- Distribution circuits
MK21D5 protects rotating equipment from phase anomalies in mid-voltage systems.