True RMS 3-Phase Monitor
The True RMS 3-Phase Monitor, Model 25, provides essential voltage monitoring for industrial applications. This device accurately measures voltage across an 80-550 VAC input range, ensuring system stability. Its configurable high and low trip delays, ranging from 0 to 20.0 seconds in 0.1-second steps, allow for precise fault response and mitigation. With a robust Lexan 920 Polycarbonate enclosure and an operating temperature range of -20°F to +130°F, it withstands demanding operational environments. The unit offers flexible relay operation options, including separate high/low relays and DPDT configurations, enhancing control system integration. Its 10 million mechanical operations relay life ensures long-term reliability and reduced maintenance cycles. This monitor is designed for consistent performance in critical three-phase systems, offering both automatic and manual reset capabilities for operational flexibility.
3Ph Voltage Monitor
Specifications
| Input Voltage (VAC) | 80-550 Volts |
|---|---|
| Input Current (Amps) | 1mA |
| Input Frequency | 50/60Hz (400Hz optional with jumper) |
| Input DC Power | 24 Volts, 2 watts |
| Output Rating (Resistive) | 10A @ 240V AC |
| Output Rating (General Use) | 4A @ 120V AC |
| Output Rating (General Use) | 2A @ 240V AC |
| Output Rating (Pilot Duty) | C300 |
| Start-up Delay | 5 secs. Min. or Automatic reset delay setting (to allow for solid lock) |
| Repeat Accuracy | ± 0.5% (fixed conditions) |
| Reset Type | Manual or Automatic |
| Expected Relay Life (Mechanical) | 10 million operations |
| Expected Relay Life (Electrical) | 100,000 min. at rated load |
| Operating Temperature | -20°F to +130°F |
| Humidity Tolerance | 0-97% w/o condensation |
| Enclosure Material | Lexan 920 Polycarbonate |
| Enclosure Flammability Rating | UL 94 V-0 1.5 mm |
| UL File Number | UL E45329 |
| Mounting | DIN Rail 35mm |
| Display Accuracy | +/- 0.5% |
| High Voltage Set Point Range | Low setpoint + 1% to 550V in 0.5V steps |
| High Trip Delay | 0 to 20.0 seconds in 0.1Sec steps |
| Low Voltage Set Point Range | 80 to High Setpoint -1% in 0.5V steps |
| Low Trip Delay | 0 to 20.0 seconds in 0.1Sec steps |
| Relay Operation Options | Separate High/Low Relays, DPDT |
| Relay Operation on Fault Options | De-energize on fault, Energize on fault, Hysteresis set, Unbalance set, Phase Loss set, Reverse Phase set |
| Restart Options | Automatic or Manual |
| Automatic Restart Delay Range | 0 to 300.0 Seconds in 0.1 Second steps |
| Warranty | 5-year Unconditional Warranty |
