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Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
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VSD control
Brian Peterson has cited the best answer. A "category 1" stop is a controlled stop under power followed by disconnection. That's allowed, in most circumstances, although machines with significant coasting or overrun may require attention paid to how the safeguarding is done, to avoid the...- TFinstad
- Post #15
- Forum: Electric motors & generators engineering
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120Vac vs. 24Vdc control power in harsh environments
Great question! Great answers! Fact is we are stuck with 24V AC/DC control systems. It has to do with circuit boards and board level circuitry components. Everything is getting smaller and cost savings continue to drive all trends. Ideally 120 Volt control circuitry works best across most...- TFinstad
- Post #30
- Forum: Electric motors & generators engineering
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Start and stop generator automatically
Most Generator dealers have available accessory control panels that can help you with this simple function. You can also have a neighborhood UL508 panel shop build you a automatic panel based on the parameters you prefer to use for automatic start or stop. Most common parameter is current draw...- TFinstad
- Post #10
- Forum: Electric motors & generators engineering
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3 Phase LV motor failure
Great tips on motor failure analysis. Have you considered the load. What has changed with the pumps. Do we have impeller restrictions, material buildup causing blockages, pump bearing wear or failure, viscosity changes in fluids being discharged from the pumps. What kind of liquids or materials...- TFinstad
- Post #25
- Forum: Electric motors & generators engineering
