DGUV Information 213-013e - SF6-Switchgear and Equipment

In the context of this DGUV Information, the following definitions apply:

1. 1.

   SF₆: Chemical formula and abbreviation for sulphur hexafluoride, an inorganic gas with excellent electrical insulating properties.

2. 2.

   SF₆-switchgear: an SF₆-gas-insulated electrical device enclosed in metal.

3. 3.

   SF₆-equipment: operating equipment filled with SF₆, such as switchgear, transducers, gas-insulated lines (GIL), high-voltage bushings, capacitors and transformers.

4. 4.

   SF₆-gas compartment: part of the SF₆ switchgear or SF₆ equipment filled with SF₆ gas (gas-filled compartment).

5. 5.

   Equipment room: the room in a facility where SF₆ switchgear or SF₆ equipment is situated.

6. 6.

   SF₆gas compartment work: encompasses the discharging, evacuating or filling of SF₆ gas compartments, the opening of SF₆ gas compartments as well as work on or in opened SF₆ gas compartments.

7. 7.

   7. Work in equipment rooms: any activities performed in the equipment room not associated with SF₆ or its decomposition products.

   Examples of such activities can be the operation of SF₆switchgear, lighting maintenance, cleaning work, painting work, etc.

8. 8.

   SF₆gas servicing unit: mobile equipment operating as a closed system used for emptying, evacuating and filling SF₆ gas compartments as well as for cleaning, storing and reprocessing SF₆ gas.

   SF₆gas servicing units are designated according to their different technical characteristics, such as the SF₆servicing unit, SF₆gas maintenance unit or SF₆gas recovery unit.

9. 9.

   Decomposition products: the decay and reaction products resulting from the decomposition of SF₆ due to the application of energy to SF₆ switchgear.

10. 10.

    SF₆gas container: a mobile, reusable vessel used to store SF₆ (SF₆ pressurized gas bottle or cylinder)