Current Unbalance Detector
The Model 2722 Current Unbalance Detector provides essential monitoring for 3-phase AC current systems. This device ensures operational integrity by detecting current imbalances, which can indicate issues such as open heating elements or motor phase loss. With an adjustable unbalance trip point from 2% to 25% and a configurable trip delay from 0.2 to 20 seconds, it offers precise control. Its DPDT output contacts are rated for 10A at 240VAC resistive, providing robust switching capabilities. Designed for industrial environments, it operates reliably across a temperature range of -20° to +131° F, maintaining performance in diverse conditions. This unit supports both automatic and manual reset options, enhancing system flexibility. Its UL Recognized and CSA Certified status confirms adherence to industry standards, making it a dependable component for critical applications requiring consistent current monitoring and protection.
Ph Unbal Detector
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 |
| Transient Protection | 2500V for 10ms |
| Unbalance Adjustment | 2% to 25% |
| Trip Delay | 0.2 to 20 seconds ± 5% |
| Output Contact Form | DPDT |
| Output Contact Rating | 10A at 240VAC resistive |
| Expected Relay Life (Mechanical) | 10 million operations |
| Expected Relay Life (Electrical) | 100,000 at rated load |
| Operating Temperature | -20° to +131° F |
| Humidity Tolerance | 0-97% w/o condensation |
| Enclosure Material | ABS plastic |
| Agency Approval | UL Recognized |
| Agency Approval | CSA Certified |
| Function | Monitors 3-phase AC Current |
| Function | Compares Three Single-phase Motors |
| Function | Detects Open 3-phase Heating Element |
| Reset Type | Automatic or Manual Reset |
