Guineafowl's latest activity
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GGuineafowl replied to the thread Running older induction motors on VFDs.So this would be a dv/dt, or perhaps LC filter, rather than a snubber? What sort of values would work? Elsewhere it’s been suggested...
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GGuineafowl reacted to Baluncore's post in the thread Running older induction motors on VFDs with
Informative.
Not at the motor terminals, but at the inverter output. The voltage switching outputs need to see an inductive load. Wind three... -
GThe ‘spiky’ output of variable frequency drives (VFDs) can damage the insulation of older motors. They’re often used to run three phase...
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GGuineafowl reacted to Sagittarius A-Star's post in the thread What Caused the Recent Power Outage in Spain, Portugal, and Southern France? with
Like.
Source: https://arstechnica.com/science/2026/03/final-analysis-of-2025-iberian-blackout-policies-left-spain-at-risk/ -
GGuineafowl replied to the thread VFD for powering a car lift.It’s better, thanks. You can’t lift halfway, then start again to go higher; the car must be lowered before raising again, to allow the...
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GGuineafowl replied to the thread VFD for powering a car lift.Results below. Loaded indicates a 2-tonne car being lifted. Compensated refers to the delta of 20uF caps across the motor windings...
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GGuineafowl replied to the thread VFD for powering a car lift.I’ve bought a secondhand meter capable of measuring power factor. It should arrive in the next few days. I wasn’t aware you could get...
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