Product Description
Description: 3-Phase Voltage Monitor/190-480V/adj.RD/2 Form C
| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Input Voltage (V) | 190 - 480 Vac |
| Maximum Input Power | 5 |
| Input AC Line Frequency (Hz) | 50 / 60 (50 will increase all delay timers by 20%) |
| Output Form | DPDT - 2 Form C |
| Output Load Rating (VA) | Pilot Duty: 480 VA @ 240 Vac B300; General Purpose: 10 A @ 240 Vac |
| Restart Delay Range | Manual; 2 - 300 s adjustable |
| Trip Delay Range | Under/Over Voltage: 4 s; Unbalance/Phase faults: 2 s |
| Trip Point Accuracy (%) | ±1% |
| Overvoltage Trip Voltage (%) | 1.1 |
| Overvoltage Reset Voltage (%) | 1.07 |
| Undervoltage Trip Voltage | 0.9 |
| Undervoltage Reset Voltage (%) | 0.93 |
| Voltage Unbalance Trip Point (%) | 0.06 |
| Voltage Unbalance Reset (%) | 0.045 |
| Termination Type | Torque: 7 in-lbs; Wire Size: 12 - 18 AWG |
| Mounting Method | #8 screws |
| Operating Temperature | -40° to 70°C (-40° to 158°F) |
| Humidity | Up to 95% non-condensing per IEC 68-2-3 |
| Dimensions | 2.93 H x 5.27 W x 2.95 D in. (94.4 x 133.9 x 74.9 mm) |
| Series Features |
| 250A Series - 3-Phase Voltage/Phase Monitor |
| Series Description: The 250A series is a three-phase, auto-ranging, dual-range voltage monitor that protects 190480 V ac, 50*/60 Hz motors regardless of their size. This monitor offers protection from low- and high-voltage, voltage unbalance, single-phase, and phase reversal. The 250A provides a user-selectable nominal voltage setpoint and will automatically select between the 200 V and 400 V range. This monitor also features adjustable or manual restart delay. This unique microcontroller-based voltage and phase-sensing device constantly monitors the three-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. The 250A monitor includes advanced, single LED diagnostics. Five different light patterns distinguish between faults and normal conditions. LED indications include normal operation, power-up restart delay, reverse-phase trip, unbalance/single-phase trip, and high/ low voltage trip. |
| Series Applications: Fan motors, Air conditioners, Compressors, Heat, well, and sump pumps, Small conveyer motors |
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