| 摘要 |
The device incorporates its own transformer to provide a local low tension supply. The electrical cut-out comprises a box (100) housing the cut-out mechanism, the box being made of metal and accommodating a voltage transformer (200). The metal box does not have right angle corners, but has cut off corners, giving rise to an octagonal horizontal section. The transformer within the box is a step-down transformer, changing from 20,000 volts to a low tension. This low tension is then used to operate an electronic cut-out management system. The line conductors (300) enter the box through insulating sleeves (360) made of a silicon material, with projecting fins (362). The cut-out box is sealed and may contain either a neutral gas, or an arc-extinguishing gas.
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