Note that securing the motor and rotor for a locked rotor test must be done very carefully. The motors generate an amazing amount of torque, and flying wrenches, for example, can be hazardous. Mike Sherman Sherman PSC LLC
> On 08/14/2024 11:36 AM CDT James Pawson (U3C) <[email protected]> > wrote: > > > > Hi all, > > > > We’ve had a few things in the lab recently requiring motor locked rotor and > motor overload testing. > > > > Working on the principle that a locked rotor motor looks like a short circuit > (inductance and DC resistance of winding) would it be reasonable to just > substitute the motor with the equivalent circuit? > > > > For an overload testing (steadily increasing the load on the motor drive > until failure or trip) I’m not sure how best to practically do this. How do > people achieve these tests practically in the lab? What equipment is used? > > > > Any recommendations gratefully received. > > > > All the best > > James > > > > James Pawson > > Managing Director & EMC Problem Solver > > > > Unit 3 Compliance Ltd > > EMC : Environmental & Vibration : Electrical Safety : CE & UKCA : Consultancy > > > > www.unit3compliance.co.uk http://www.unit3compliance.co.uk/ | > [email protected] mailto:[email protected] > > +44(0)1274 911747 | +44(0)7811 139957 > > 2 Wellington Business Park, New Lane, Bradford, BD4 8AL > > Registered in England and Wales # 10574298 > > > > Office hours: > > Every morning my full attention is on consultancy, testing, and > troubleshooting activities for our customers’ projects. I’m > available/contactable between 1300h to 1730h Mon/Tue/Thurs/Fri. > > For inquiries, bookings, and testing updates please send us an email on > [email protected] mailto:[email protected] or call 01274 > 911747. Our lead times for testing and consultancy are typically 4-5 weeks. > > > > > > > > > > http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient > > Virus-free.www.avg.com > http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient > > --------------------------------------------- > > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > [email protected] > > All emc-pstc postings are archived and searchable on the web at: > https://www.mail-archive.com/[email protected]/ > > > > Website: https://ewh.ieee.org/soc/pses/ https://ewh.ieee.org/soc/pses/ > Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to > unsubscribe) https://ewh.ieee.org/soc/pses/list.html > List rules: https://ewh.ieee.org/soc/pses/listrules.html > > For help, send mail to the list administrators: > Mike Sherman at: [email protected] mailto:[email protected] > Rick Linford at: [email protected] mailto:[email protected] > > For policy questions, send mail to: > Jim Bacher at: [email protected] mailto:[email protected] > > > --------------------------------------------- > > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to [email protected] All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
