19-120-400
The Model 19 3-Phase Monitor offers essential protection for industrial systems. It accurately detects phase loss, low voltage, and phase reversal, safeguarding connected equipment from operational disruptions. With an automatic reset type, the unit minimizes downtime by restoring power once conditions stabilize. Users can configure precise operational parameters through adjustable trip delays, ranging from 1 to 30 seconds, and restart delays, from 1 to 300 seconds. This flexibility allows for tailored system response to varying load conditions. The monitor is compatible with both Wye and Delta systems, requiring no neutral connection for simplified integration. Its robust design, featuring SPDT 10 amp output contacts and a five-year unconditional warranty, ensures consistent performance and reliability in demanding operational environments. Power consumption is 1.4W.
The Model 19 continuously monitors 3-phase power lines for abnormal
conditions. When properly adjusted, the Model 19 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 19 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.
Out of stock
Specifications
| Detection | Phase loss, low voltage, phase reversal |
|---|---|
| Reset Type | Automatic |
| Warranty | Five year unconditional |
| Nominal AC (phase to phase) | 120VAC |
| Adjustment range | 85-120VAC |
| Frequency | 400Hz |
| Power consumption | 1.4W |
| 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 |
| Expected relay life (Mechanical) | 10 million operations |
| Expected relay life (Electrical) | 100,000 operations at rated load |
| Operating temp | -20° to +131° F |
| Humidity tolerance | 0-97% w/o condensation |
| Enclosure material | NORYL plastic cover; 6/6 Nylon base |
| Mounting | 8-pin socket (**sold separately) |
| Accessory Socket | Order 8-pin socket number 51X120 |
| System Compatibility | Wye or Delta systems |
| Neutral Connection | Not required |
| Indicators | FAULT and NORM condition indicators |
