IOG Test Transformers
IOG transformers (Test, Single-phase, with Gas insulation) are designed for use as high voltage sources in the mobile and stationary test laboratories.
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| IOG-100/7,5 test transformer outline drawing |
IOG-100/7,5 test transformer in a transporting case
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Transformers specifications are shown in table:
| Characteristic |
Value |
| IOG-150/18 |
IOG-100/20 |
IOG-100/7,5 |
IOG-50 |
IOG-15 |
| HV winding rated voltage, kV |
150 |
100 |
100 |
50 |
15/10* |
| Max. HV winding voltage at short-term using (use factor 10 %), kV |
155 |
105 |
105 |
55 |
15/10* |
| 50 Hz frequency test voltage, kV |
165 |
110 |
110 |
55 |
16.5/11* |
| LV winding rated voltage, V |
220 |
220 |
220 |
220 |
240 |
| Rated frequency, Hz |
50 |
50 |
50 |
50 |
50 |
| Short-circuit stable current, A, not less |
1,8 |
2,9 |
1,4 |
2,8 |
6,7/7,5* |
| Short-circuit voltage Usc, % |
6,8 |
6,7 |
5,0 |
3,5 |
3,5 |
| Min. load capacitance, nF |
0,0 |
0,0 |
0,0 |
0,0 |
0,0 |
| Max. capacitance of the test object, nF |
15 |
15 |
15 |
40 |
330 |
Test power, kVA:
— long-term rate
— short-term rate (use factor 10%) |
8,5
18 |
12
20 |
4,1
7,8 |
4,4
7,5 |
4,7
7,4 |
| Max. supply power, no more, kVA |
14,0 |
13,5 |
5,5 |
5,5 |
4,8 |
| Proper PD intensity, pC, no more |
5,0 |
5,0 |
5,0 |
5,0 |
5,0 |
| Rated SF6 overpressure, MPa, no more |
0,32 |
0,32 |
0,35 |
0,30 |
0,30 |
| SF6 filling volume, l |
25 |
25 |
15 |
15 |
15 |
| Overall dimensions, mm |
400x420x1270 |
400x420x700 |
350x350x620 |
350x350x580 |
350x350x580 |
| Weight, kg |
95 |
85 |
42 |
38 |
36 |
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* — The transformer has two LV winding sections; in the denominator – data for the series connection of the sections
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