4. Przejście z pracy prądnicowej na silnik i przeprowadzenie regulacji mocy biernej przy biegu jałowym i wykreślenie charakterystyki Q=f(Iw), Ij=f(Iw) oraz cos<p=f(Iw) przy Un=const i fn=consL
Tabela 1 Un = 380V, fn =50Hz, Pn = 12kW (wyniki do pomiarów z punktów 2 i 3)
p |
II |
costp |
P |
II |
costp | ||
[kW] |
[A] |
[A] |
- |
[kW] |
[A] |
[A] |
- |
0P„ |
0.2SPn | ||||||
0 |
21 |
28 |
0 |
3 |
21 |
28 |
0.22 |
0 |
18 |
25 |
0 |
3 |
18 |
26 |
0.25 |
0 |
15 |
22 |
0 |
3 |
15.5 |
23 |
0.29 |
0 |
12 |
19 |
0 |
3 |
12 |
20 |
0.38 |
0 |
9 |
16.5 |
0 |
3 |
8.5 |
16 |
0.54 |
0 |
6 |
14 |
0 |
3 |
5 |
12 |
0.91 |
0 |
0 |
9 |
0 |
3 |
5.5 |
10 |
0.83 |
0 |
5 |
6 |
0 |
3 |
7 |
6.5 |
0.65 |
0 |
8 |
4 |
0 |
3 |
10 |
4 |
0.46 |
0 |
11 |
2.5 |
0 |
3 |
13 |
3 |
0.35 |
0 |
U |
1.5 |
0 |
3 |
15 |
2 |
0.3 |
0 |
15 |
1 |
0 |
3 |
16 |
1 |
0.28 |
0.5 P„ |
0,75 Pn | ||||||
6 |
21 |
28 |
0.43 |
9 |
21 |
26 |
0.65 |
6 |
17 |
24 |
0.54 |
9 |
20 |
25 |
0.68 |
6 |
14.5 |
20 |
0.63 |
9 |
19 |
24 |
0.72 |
6 |
12 |
18 |
0.76 |
9 |
17 |
21 |
0.8 |
6 |
9.5 |
14 |
0.96 |
9 |
15 |
17.5 |
0.91 |
6 |
8.5 |
11 |
1.00 |
9 |
13.5 |
12 |
1 |
6 |
10 |
8 |
0.91 |
9 |
14 |
10 |
0.98 |
6 |
12.5 |
5 |
0.73 |
9 |
16.5 |
7 |
0.83 |
6 |
16 |
3 |
0.57 |
9 |
18.5 |
5 |
0.74 |
6 |
20 |
2 |
0.46 |
9 |
21 |
4 |
0.65 |
Pn | |||||||
12 |
21 |
24 |
0.87 | ||||
12 |
19 |
20 |
0.96 | ||||
12 |
18 |
17 |
1 | ||||
12 |
17.5 |
15 |
1 | ||||
12 |
18 |
11 |
1 | ||||
12 |
19 |
10 |
0.96 |