The Model 2522 continuously monitors 3-phase power lines for abnormal conditions. When properly adjusted, the Model 2522 will detect phase loss on a loaded motor even when regenerated voltage is present. This unit consists of a solid-state voltage and phase-angle sensing circuit, driving an electromechanical relay with DPDT contacts. When correct voltage and phase rotation are applied, the internal relay will energize. A fault condition will de-energize the relay. When the fault is corrected the Model 2522 will reset. Both automatic and manual reset versions are available. The Model 2522 does not require a neutral connection, and can be used with Wye or Delta systems. Two versions cover 120V, 208/240V, and 60Hz. Adjustment ranges are sufficiently wide to allow for proper adjustment to existing conditions. A failure indicator is provided to aid in adjustment and system troubleshooting.
| Time Mark Corporation | |
|---|---|
| Product Category | Protective Relays and Monitoring Relays |
| Product Number | Model 2522B |
| Product Name | 3-Phase Monitor |
| Voltage Sensitive Relay | Undervoltage |
| Power (Phase) Sensing | Phase Failure (Loss); Reversal |
| Protective Functions | Synchronous Check (Paralleling) |
| Features | Automatic Reset; Visual Indicator |
