Product Description
Description: Phase Monitor Relays • Nominal Voltage: 480 VAC • Adjustment Range: 380-480 VAC • Frequency: 400Hz • Power consumption: 3.7W • Output Contacts: SPDT 10 amps at 240VAC resistive
(Low current options available for all models)* • Mounting: DIN Rail or Surface Mount
| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Nominal Voltage | 480 VAC |
| Adjustment Range | 380-480 VAC |
| Frequency | 400Hz |
| Power consumption | 3.7W |
| Transient protection | 2500VAC for 10ms |
| Repeat accuracy | ± 0.1% of set point (fixed conditions) |
| Trip delay | 1-30 sec. |
| Restart Delay | 1-300 sec. |
| Dead Band | Approximately 2% |
| Output Contacts | SPDT 10 amps at 240VAC resistive (Low current options available for all models)* |
| Expected relay life | Mechanical: 10 million operations Electrical: 100,000 operations at rated load |
| Operating temp | -20° to +131° F |
| Humidity tolerance | 0 - 97% w/o condensation |
| Terminal Torque | 3.5 in. lbs. maximum |
| Wire Type | Stranded or solid 14-28 AWG, 1/terminal |
| Enclosure Material | NORYL plastic |
| Mounting | DIN Rail or Surface Mount |
| Weight | 5.1 oz. |
| *Low Current Options | For low current applications: Models ordered with suffix "/SG" will have silver with gold flash contacts (SPDT 5 amps at 120VAC resistive) |
| Agency Approval | UL Recognized (U.S. and Canada) (For use in a Pollution Degree 2 Environment) |
| Series Features |
| MODEL 18 3-Phase Monitor with Trip & Restart Delays |
| Series Description: The Model 18 continuously monitors 3-phase power lines for abnormal conditions. When properly adjusted, the Model 18 monitor will detect phase loss on a loaded motor even when regenerated voltage is present. This device consists of a microcontroller with a voltage and phase-angle sensing circuit, driving an electromechanical relay. 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 monitor will automatically reset. An adjustable restart delay prevents short cycling in compressor applications and an adjustable trip delay prevents nuisance tripping during power fluctuations. The Model 18 does not require a neutral connection and can be used with Wye or Delta systems. Voltage ranges are sufficiently wide to allow for proper adjustment to existing conditions. Both FAULT and NORM condition indicators are provided to aid in adjustment and system trouble-shooting. The Model 18 is UL Recognized in the U.S. and Canada and is available with optional gold flashed silver contacts for low current applications. |
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