Product Description
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| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Function | Phase Loss, Reversal, Over/Under Voltage and Unbalance |
| Operating Voltage | 95-120 VAC |
| Power Consumption | 3.7W at 120V |
| Reset | Manual |
| Frequency | 50/60Hz |
| Type of Measurement | RMS |
| Under Voltage (% of setpoint) | Trip 90% ±1% Reset 93% ±1% |
| Over Voltage (% of setpoint) | Reset 110% ±1% Trip 107% ±1% |
| Voltage Unbalance (conforms to NEMA) | Trip 2-8%, adjustable ResetTrip setting minus 0.7% |
| Trip Delay Time | Over, Under, & Unbalanced: Unbalance > 15% 1-30 sec., adjustable: 1 sec., fixed Single-Phasing Faults: 1 sec., fixed |
| Restart Delay | 1-500 sec., adjustable |
| Manual Reset Input | 5V open circuit/500µA short circuit |
| Output Contacts | DPDT 8A at 240VAC resistive |
| Operating Temp | - 20º to +140º F |
| Humidity Tolerance | 0-97% w/o condensation |
| Enclosure | Noryl plastic |
| Mounting | 11-Pin Socket (**sold separately) |
| Low Current Options | Models ordered with suffix /SG have silver with gold flash contacts |
| Series Features |
| MODEL 24 3-Phase Monitor with Adjustable Trip & Restart Delays |
| Series Description: The Model 24 is a microcontroller-based universal 3-phase monitor for protecting 3-phase motors from abnormal power conditions. It can detect under voltage, over voltage, voltage unbalance, reverse phase, and single-phasing even when regenerated voltage is present. The Model 24 includes adjustable trip and restart delays to prevent nuisance tripping during power fluctuations and short cycling in compressor applications. The LED status indicators and adjustment pots for Voltage Adjustment, % Unbalance, Restart Delay and Trip Delay are mounted on the front of the unit for easy access. Automatic or manual restart versions are available. The Model 24 does not require a neutral connection and can be used on either Wye or Delta systems. All versions of the Model 24 are available with optional gold flashed silver contacts for low current applications. |
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