3-Phase Current Unbalance Detector
The Model 272-24 3-Phase Current Unbalance Detector provides essential protection for industrial three-phase systems. Operating with a 24VAC input and monitoring currents from 1 to 5 amps AC, this device detects imbalances that can lead to equipment damage and operational inefficiencies. Its adjustable unbalance threshold, ranging from 2% to 25%, allows for precise application tuning to specific system requirements. A configurable trip delay, from 0.5 to 10 seconds, prevents nuisance tripping while ensuring timely response to critical conditions. The robust SPDT 10A at 240VAC resistive contact rating ensures reliable control circuit integration. Designed for continuous operation within a -20° to +131° F temperature range, it offers consistent performance in demanding environments. This detector contributes to extended motor life, reduced maintenance costs, and enhanced system reliability. Its automatic reset feature simplifies operational recovery.
3Ph Current Unbal Mon
Specifications
| Input Voltage | 24VAC |
|---|---|
| Input Voltage Range | 20-28VAC |
| Power Consumption | 1.5W |
| VA Burden | 0.5VA per phase |
| Frequency Range | 50-400Hz |
| Current Range | 1 - 5 amps AC |
| Input Current | 40 amps for 2 seconds |
| Unbalance Adjustment | 2% to 25% |
| Trip Delay | 0.5 to 10 seconds ± 20% |
| Contact Rating | SPDT 10A at 240VAC resistive |
| Expected Relay Life (Mechanical) | 10 million operations |
| Expected Relay Life (Electrical) | 100,000 at rated load |
| Transient Protection | 2500V for 10ms |
| Operating Temperature | -20° to +131° F |
| Humidity Tolerance | 0-97% w/o condensation |
| Enclosure Material | ABS plastic |
| Reset Type | Automatic Reset |
