Product Description
Description: 3-Phase Volt.Mon./380-480V/adj.VUB,TD,RD/480V rel.
| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Input Voltage (V) | 380 - 480 Vac |
| Maximum Input Power | 6 |
| Input AC Line Frequency (Hz) | 50 / 60 (50 will increase all delay timers by 20%) |
| Output Form | SPDT |
| Output Load Rating (VA) | Pilot Duty: 470 VA @ 600 Vac; General Purpose: 10 A |
| Restart Delay Range | After a Fault or power loss: Manual; 2 - 300 s adjustable |
| Repeat Accuracy (%) | ±0.1% |
| Trip Delay Range | Under/Over and Unbalance Voltage: 2 - 30 s adjustable; single-Phase faults (>25%UB): 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 (%) | 2 - 8% adjustable |
| Voltage Unbalance Reset (%) | Trip setting minus 1% |
| 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) |
| Storage Temperature (F/C) | -40° to 80°C (-40° to 176°F) |
| Dimensions | 2.93 H x 5.27 W x 2.95 D in. (74.4 x 133.9 x 74.9 mm) |
| Series Features |
| 355 Series - 3-Phase Voltage/Phase Monitor |
| Series Description: e 355 series is a three-phase voltage monitor with adjustable trip and restart delay, adjustable voltage unbalance, and multiple diagnostic lights. It is ideal for heavy-duty applications that need both protection and simple user-friendly diagnostics. Suitable applications include pump panels, commercial HVAC, oil rigs, and many more. The 355 series uses microcontroller technology to monitor incoming voltage and de-energize its output relay if power problems exist. It can protect motors from damage caused by single-phasing, high- and low-voltage, phase reversal, and voltage unbalance. These relays have four diagnostic LEDs that clearly show overvoltage, undervoltage, voltage unbalance, reverse-phase, and normal conditions. The adjustable trip and restart settings prevent nuisance tripping due to rapidly fluctuating power line conditions and allow staggered start-up of multiple motors after a fault to prevent a low-voltage condition. Series 355 models include the 355-200, which is equipped with a heavy-duty 10 A general purpose SPDT relay. The 355- 400 and 355-600 models are equipped with a 470 VA @ 600 V ac pilot duty SPDT relay. A high-voltage (600 V) DPDT relay output option is available with the 400 V model. |
| Series Applications: Pump panels, Commercial HVAC, Oil rigs, Heavy-duty applications that need both protection and simple user-friendly diagnostics |
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