3-Phase Current Unbalance Detector
The MODEL 272 3-Phase Current Unbalance Detector, SKU 272-120, provides essential protection for three-phase systems. This device monitors current balance, preventing equipment damage from phase loss or voltage unbalance. Its adjustable unbalance trip point, ranging from 2% to 25%, allows for precise application tailoring. A configurable trip delay, from 0.5 to 10 seconds, helps mitigate nuisance trips while ensuring timely response to critical conditions. Operating reliably from -20° to +131° F, it integrates seamlessly into diverse industrial environments. The unit's automatic reset feature simplifies system recovery after a fault. With a contact rating of SPDT 10A at 240VAC resistive, it offers robust control. This detector contributes to extended motor life and reduced downtime by proactively identifying and addressing current imbalances, enhancing overall system longevity and operational efficiency.
3Ph Current Unbal Mon
Specifications
| Input Voltage | 115VAC |
|---|---|
| Input Voltage Range | 100-130VAC |
| 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 |
