Rotor and

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This is a brief description of our technical needs
1.- Resume:
Cores for three phase electric motors, 50/60 Hz, HIGH EFFICIENCY, composed of stator and rotor, for use in motors totally enclosed(TEFC-acronym in English), category N & H from IEC, according to photos below.
 
2.- The stator should be coiled with copper wires, output cables properly varnished (ready to use).
3.- The rotorcan be injected aluminum or copper (In other cases, the supplier must provide and reach the minimum incomes, as indicated below). The rotor should NOT be with solid steel shaft (axel), as photo above.In other words, without the shaft.
MINIMUM INCOME THAT BRAZILIAN MARKET USE FOR THREE-PHASE ELECTRIC MOTORS IN 60Hz |
KW | 2 POLES | 4 POLES | 6 POLES |
================== | 3600 RPM | 1800 RPM| 1200 RPM |
0.75 | 80.5 | 82.3 | 80.0 |
1.10 | 82.8 | 83.8 | 79.9 |
1.50 | 84.1 | 85.0 | 83.0 |
2.20 | 85.6 | 86.4 | 83.4 |
3.00 | 86.7 | 87.4 | 85.0 |
4.00 | 87.6 | 88.3 | 87.5 |
5.50| 88.6 | 89.5 | 88.0 |
7.50 | 89.5 | 90.1 | 89.0 |
11.0 | 90.5 | 91.0 | 90.2 |
15.0 | 91.3 | 91.8 | 91.0 |
18.5 | 91.8 | 92.4 | 91.7 |
 
Note: we do NOT need a complete electric motor, butthe stator and rotor set. We will use our IEC frame here in Brazil.
4.- RPM and poles that we will need:
* 3600 RPM (2 poles), 1800 RPM (4 pole) and 1200 RPM (6 poles).
5.- The voltages thatthese cores should be:
* 220/380/440 V.
Note: if 440V is a complicating factor for negotiation, we are able to choose only 220/380V since the one doesn’t make any encumbrances for us.
6.- CorePower that we will need:
* 0.75 KW
* 1, 1KW
* 1,5KW,
* 2,2KW
* 3KW
* 4KW
* 5,5KW
* 7,5KW
* 11KW
* 15KW
* 18,5KW.
Note: In a general way, we will need cores formotors from 1 to 25 HP.
7.- The Questions below are asked to the supplier after all the information above make part of their production:
* What is the Power Factor for each type of power, as...
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