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Motors and Windings

How to know how many hp is the engine

Matias_kanazawa
hace 6 años
hace 6 años
Good people would need to know the hp of a three-phase motor since I want to use it at 220v, on the board it does not read well since the part of the hp is blurred, you get to see 7.5 but I am not sure, it is an old motor of A bank boiler, the rpm is 1400 220/380 50Hz and 3 / 1.7amperes says
Galego
Galego
679
hace 6 años

With these consumptions it corresponds to a 0.75 hp (3/4) engine ... Greetings

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Matias_kanazawa
hace 6 años

Would you have to use a 40mf capacitor to connect to 220v?

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todito
todito
581
hace 6 años
hace 6 años
If the motor is three-phase, with the capacitor as Matias says you can try it, but not to have it working. The one that says 220/380 is not that you can put it in 220 or three-phase. but it refers to the winding and the connection for soft start but in three phase or they can be 380/660 for start in triangle or other star
Galego
Galego
679
hace 6 años
hace 6 años
Good ... It is not my intention to boycott this answer but I think it is not correct at all .. That the motor puts 220/380 means that it can work with a three-phase voltage of both 230v and 380v, but making the corresponding Triangle / Star connection, because in triangle each winding supports the grid voltage and in star the voltage is applied between two windings, hence work at higher tension. As for passing it to 220v single phase, normally, the rule of 50UF is applied for each HP or 70UF per KW. You would have to connect it in a triangle and take into account that the power delivers around 2/3 since one branch of the winding is not powered ... The engine will run without problem .. I have converted several and never gave me problems ..
Matias_kanazawa
hace 6 años

Is this how I have seen them do, as for the hp is what Jallina said is 0.75 hp?

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