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Control transformers
Control transformers – compliant to SR EN 61558-2-2
These transformers have an input rated voltage up to 1000 Vac, the rated frequency up to 50 Hz and a rated output not exceeding 1000 VA.
They are defined by a specific parameter which is the instantaneous maximum output , this being the maximum power produced temporarily, when the transformer is supplied with the rated input voltage, rated frequency, load power factor is 0,5 and the secondary voltage is no less than 95% from rated value.
The transformers produced by PETRA have an instantaneous maximum output which is 25% more than the rated output.
Techinical data:
|
Power
[VA]
|
OD
[mm]
|
H
[mm]
|
Weight
[kg]
|
dU
[%]
|
DTmax
[C]
|
Cooper Losses
[W / 20 C]
|
No load losses
[W]
|
|
3
|
46
|
26
|
0.13
|
21.97
|
25
|
0.83
|
0.09
|
|
5
|
51
|
27
|
0.18
|
17.00
|
26
|
1.01
|
0.14
|
|
10
|
52
|
29
|
0.21
|
20.17
|
40
|
2.44
|
0.14
|
|
15
|
61
|
29
|
0.30
|
17.11
|
39
|
3.04
|
0.21
|
|
20
|
62
|
30
|
0.35
|
15.69
|
43
|
3.69
|
0.21
|
|
25
|
70
|
29
|
0.43
|
13.22
|
39
|
3.81
|
0.32
|
|
30
|
71
|
30
|
0.47
|
13.26
|
44
|
4.58
|
0.32
|
|
35
|
71
|
30
|
0.50
|
12.97
|
47
|
5.21
|
0.33
|
|
40
|
75
|
35
|
0.58
|
12.96
|
44
|
5.95
|
0.39
|
|
50
|
85
|
36
|
0.74
|
11.32
|
41
|
6.39
|
0.51
|
|
63
|
89
|
36
|
0.83
|
11.40
|
46
|
8.11
|
0.60
|
|
80
|
90
|
37
|
0.98
|
9.55
|
47
|
8.51
|
0.61
|
|
100
|
90
|
45
|
1.16
|
9.02
|
51
|
9.95
|
0.75
|
|
120
|
100
|
44
|
1.37
|
8.74
|
50
|
11.56
|
0.97
|
|
150
|
111
|
46
|
1.68
|
7.80
|
48
|
12.82
|
1.23
|
|
200
|
123
|
48
|
2.15
|
7.24
|
49
|
15.75
|
1.54
|
|
250
|
130
|
46
|
2.48
|
6.47
|
51
|
17.44
|
1.82
|
|
300
|
126
|
55
|
2.92
|
5.72
|
51
|
18.37
|
2.27
|
|
350
|
136
|
56
|
3.37
|
5.43
|
50
|
20.22>
|
2.76
|
|
400
|
138
|
58
|
3.64
|
4.91
|
51
|
20.80
|
2.73
|
|
450
|
143
|
58
|
4.01
|
4.70
|
52
|
22.36
|
3.00
|
|
500
|
145
|
59
|
4.23
|
4.54
|
54
|
23.83
|
3.01
|
|
630
|
161
|
59
|
5.26
|
4.08
|
53
|
26.96
|
3.89
|
|
750
|
176
|
60
|
6.24
|
3.98
|
53
|
31.27
|
4.75
|
|
850
|
178
|
61
|
6.66
|
3.73
|
55
|
33.08
|
4.77
|
|
1000
|
172
|
69
|
7.68
|
3.11
|
54
|
32.17
|
6.22
|
The information presented above are typical data and can be changed without prior notice. Other values are available on request.
