3 Phase 415V motor on 1 phase 230V -- part 2

Clear view of wiring details how to connect a 3 phase 415 Volts motor on 1 phase 230 Volts in half open star arrangement with a capacitor.
Audio of slow motor start is nice to listen too as well.
The motor is a 3 HP Lancashire motor, nameplate deatils are in another clip.
Old hazelmeijer switchboard of my workshop is shown at the end of this video.

Category:

Howto & Style

Tags:

• 3_phase
• motor
• electricity
• hazelmeijer
• single
• phase
• converter
• 230Volts
• Hazemeyer
• capacitor
• rotary

[cortexedge]

How is the line voltage in a three phase system 415V, since the phase voltage is 230V?

Line voltage is phase voltage multiplied by √3, this being 230V*√3= 398V~ 400V

[RODALCO2007]

@cortexedge You are correct, the line voltage used is 230 Volts. The motor nameplate rating is 415 Volts, which means that 240 Volts should ideally be used.

The motor runs fine on 230 Volts.

[StRuMzNdRuMz]

Whoa, don't electrocute yourself partner!!

[RODALCO2007]

@StRuMzNdRuMz Thanks for your concern, I take caution.

[abaddon1337]

hi

Like in this video, I tried to couple stators in open-star and the results are not as good as coupling in delta with the permanent capacitor in parallel to one of the self of the stator. On some low power motors (0.5 HP), I am even forced to start the rotor manually otherwise it don't start. This problem don't appear with the coupling in delta and the motor gives more mechanical power than with the open star-coupling.

Is open-star really efficient with high power motor only ?

[RODALCO2007]

@abaddon1337 I run this motor in half open star. The starting torque is less than in delta which is correct.

I just wanted to try this arrangement out as I know that the delta set up works.

[weeardguy]

Hazelmeijer? Never heard of that brand before ;) I only know Hagemeijer, but to me the board looks like Holec.

[bait28]

would this work driving a 7.5 HP FS motor on 240 VAC?

[erokn09]

what do u use it for? lol i mean u just look at it

[panyolito1929]

sir rodal can he drive that motor a 250kva generator dynamo ???

[cristian3131]

@madisonelectronic nice, hope he gives us a demo :))

[madisonelectronic]

@cristian3131 Automatic muslim castration machine.

[cristian3131]

what did the gear on the shaft use to turn ?

[2kapufa]

@cortexedge

To me it looks like a 240V Australian style plug. That would explain pretty much everything. Maybe he just made a typo. and it is 240V/415V.