Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Shaft_voltage> ?p ?o }
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- Shaft_voltage abstract "Shaft voltage occurs in electric motors and generators due to leakage, induction, or capacitive coupling with the windings of the motor. It can occur in motors powered by variable-frequency drives, as often used in heating, ventilation, air conditioning and refrigeration systems. DC machines may have leakage current from the armature windings that energizes the shaft. Currents due to shaft voltage causes deterioration of motor bearings, but can be prevented with a grounding brush on the shaft, grounding of the motor frame, insulation of the bearing supports, or shielding.Shaft voltage can be induced by non-symmetrical magnetic fields of the motor (or generator) itself. External sources of shaft voltage include other coupled machines, and electrostatic charging due to rubber belts rubbing on drive pulleys.Every rotor has some degree of capacitive coupling to the motor's electrical windings, but the effective inline capacitor acts as a high-pass filter, so the coupling is often weak at 50–60 Hz line frequency. But many Variable Frequency Drives (VFD) induce significant voltage onto the shaft of the driven motor, because of the kilohertz switching of the insulated gate bipolar transistors (IGBTs), which produce the pulse width modulation used to control the motor. The presence of high frequency ground currents can cause sparks, arcing and electrical shocks and can damage bearings.".
- Shaft_voltage wikiPageExternalLink abb_technical_guide_no5_revc.pdf.
- Shaft_voltage wikiPageExternalLink 05_jacky.html.
- Shaft_voltage wikiPageID "31857185".
- Shaft_voltage wikiPageLength "5181".
- Shaft_voltage wikiPageOutDegree "23".
- Shaft_voltage wikiPageRevisionID "679481384".
- Shaft_voltage wikiPageWikiLink AC_motor.
- Shaft_voltage wikiPageWikiLink Aluminium.
- Shaft_voltage wikiPageWikiLink Bearing_(mechanical).
- Shaft_voltage wikiPageWikiLink Capacitive_coupling.
- Shaft_voltage wikiPageWikiLink Category:Electric_motors.
- Shaft_voltage wikiPageWikiLink Category:Electric_power.
- Shaft_voltage wikiPageWikiLink Category:Electrical_safety.
- Shaft_voltage wikiPageWikiLink Category:Electrical_wiring.
- Shaft_voltage wikiPageWikiLink Category:Power_cables.
- Shaft_voltage wikiPageWikiLink Electric_motor.
- Shaft_voltage wikiPageWikiLink Electrical_impedance.
- Shaft_voltage wikiPageWikiLink Faraday_cage.
- Shaft_voltage wikiPageWikiLink Ground_and_neutral.
- Shaft_voltage wikiPageWikiLink Ground_zero.
- Shaft_voltage wikiPageWikiLink HVAC.
- Shaft_voltage wikiPageWikiLink Insulated-gate_bipolar_transistor.
- Shaft_voltage wikiPageWikiLink Parasitic_capacitance.
- Shaft_voltage wikiPageWikiLink Pulse-width_modulation.
- Shaft_voltage wikiPageWikiLink RLC_circuit.
- Shaft_voltage wikiPageWikiLink Refrigeration.
- Shaft_voltage wikiPageWikiLink Stray_voltage.
- Shaft_voltage wikiPageWikiLink Variable-frequency_drive.
- Shaft_voltage wikiPageWikiLinkText "Shaft voltage".
- Shaft_voltage wikiPageWikiLinkText "electrical currents through bearings".
- Shaft_voltage wikiPageUsesTemplate Template:Cite_web.
- Shaft_voltage wikiPageUsesTemplate Template:Dablink.
- Shaft_voltage wikiPageUsesTemplate Template:Main.
- Shaft_voltage wikiPageUsesTemplate Template:Reflist.
- Shaft_voltage subject Category:Electric_motors.
- Shaft_voltage subject Category:Electric_power.
- Shaft_voltage subject Category:Electrical_safety.
- Shaft_voltage subject Category:Electrical_wiring.
- Shaft_voltage subject Category:Power_cables.
- Shaft_voltage type Component.
- Shaft_voltage type Motor.
- Shaft_voltage comment "Shaft voltage occurs in electric motors and generators due to leakage, induction, or capacitive coupling with the windings of the motor. It can occur in motors powered by variable-frequency drives, as often used in heating, ventilation, air conditioning and refrigeration systems. DC machines may have leakage current from the armature windings that energizes the shaft.".
- Shaft_voltage label "Shaft voltage".
- Shaft_voltage sameAs Q17080379.
- Shaft_voltage sameAs m.0gtx942.
- Shaft_voltage sameAs Q17080379.
- Shaft_voltage wasDerivedFrom Shaft_voltage?oldid=679481384.
- Shaft_voltage isPrimaryTopicOf Shaft_voltage.