HVAC 3-Phase Motors / 9 and 12 Lead Motors

[@wojtekkucharski1270]

Great video. Answered my question with 12 lead wire whether to use Y or D

[@sd5722]

Nice work. Keep it up👍

[@Paulmonaghan-n3o]

Great video. Am interested in the wye delta motor wiring and trouble shooting

[@chriscrawley1014]

This is awesome! Would you be able to email me the PowerPoint? Great video

[@whirlwind8825]

I have a 480 volt motor I pulled from a old machine . The motor has the 9 wire high voltage configuration ... there was also a #10 and #11 wire but no #12 wire ... The #10 and #11 were just capped off with a wire nut .. I was curious as to why I have only 11 wires... or if they are not #10 and #11 but maybe a thermal that is bypassed ?

[@forogonya-howcometoyou5727]

In low voltage connection where on earth are the terminals T10, T11 and T12?

[@JamesJoseph-te3jm]

i have a 12 wire toshiba 7.5 hp 3 phase, how do i test the windings for continuity?

[@sd5722]

One question Why we need 12 or 9 lead motor instead of 6 lead motor. Where these motors used

[@music6101]

HVAC

[@seth8982]

Elevators as well.

[@mackeverhart1041]

I have a GE sever duty motor 12 wire. I have it wired 9-5-11-L3 4-8-10-L2 6-7-12-L1 runs at 900 rpm on vfd (3510 rpm on plate ) I know the vfd is set up right. Why will it not run 3510 like it says?

[@music6101]

Mack, On the VFD it my be set for a 8-pole motor which is 900 RPM at 60Hz, a 3600 RPM motor is a 2-pole motor RPM = (120 x Hz) / # of Motor Poles

[@vicentecarrasco3653]

hi，what happen if the 12leads motor run in 3 coils？the speed will be slow？

[@megaturon1212]

It can run with the same speed but the torque will be reduced, assuming you applied the rated voltage per coil.

[@vicentecarrasco3653]

@@megaturon1212 when the torque will be slow the motor will damage?

[@megaturon1212]

@@vicentecarrasco3653 It depends on the load, you need to check the motor current. If the measured motor current exceeds the rated current on the nameplate, the motor will burn.

[@oscarmendez1372]

Question: I'm going to install a used system 27 Hp bitzer compresor, for ultra freezing, this system was assembly in china, installed originally in Seattle Washington, and I'm goin to install here en Baja Sur Mexico. The evaporator has 4 Chinese motors 3/4 hp 220/ 380 V, and each motor has 8 leads, 6 black lead numbered from 1 to 6 and 2 more Yellow leads. I notes that it were connected to 220 volt 3 face, L1 to leads 1,5 L2 to leads 2,6 and L3 to leads 3,4 The other two yellow lead i don't know exactly where were connected, I'm assuming something for controls. Did you saw this kind of connections before? do you have any idea what the yellow leads are for? there is not information at all in this motor and system, no serial numbers no model numbers only the compresor who was made in Germany. The evap motors only has the voltage, Hp and amperes that's it. Thank you in advance. I'm apologize, my English is not the best.

[@rsburke71]

Yellow leads are for thermal overload

[@axelateon1384]

why never when a compressor is in a vacuum???????

[@rsburke71]

Cannot not arc to other leads or to ground if there is no atmosphere to carry the charge