Disconnectors STOL
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The STOL disconnectors are devices used as components of stationary distribution substations. They are able to switch electrical circuits ON & OFF in the no-load conditions. The devices are controlled manually (if so, they are electromagnetically arrested in the end positions) or using a motor-driven unit. STOL disconnectors are fitted with auxiliary contacts extending status signals. Thanks to its modular design the STOL series of disconnectors can offer a range of optional configurations.
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The range of the disconnectors STOL for traction according to standard ČSN EN 50123
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Technical data
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Number of poles |
1 | ||||
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Rated voltage |
750V |
1500V |
3000V | ||
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Insulation voltage |
1200V |
2300V |
4800V | ||
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Impulse withstand voltage |
8kV |
12kV |
30kV | ||
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Short-time withstand AC voltage |
4kV |
6kV |
14kV | ||
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Frequency |
0 - 60Hz | ||||
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Rated current |
800A |
1000A |
2000A |
3150A |
4000A |
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Short-time withstand current |
10kA |
13kA |
36kA |
40kA |
50kA |
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Peak withstand current |
25kA |
32kA |
63kA |
100kA |
125kA |
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Short-circuit time |
1s | ||||
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Mechanical rigidity |
20 000 cycles | ||||
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Ambient temperature |
-25° - +45°C | ||||
| Blocking electromagnet | 24 - 220VDC / 230VAC | ||||
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Driving motor |
24 - 220VDC / 230VAC / 3x400VAC | ||||
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Number of auxiliary contacts |
2 / 4 / 6 / 8 | ||||
