Arc Detection Solution
The arc detection system LBW is equipped with lightsensitive sensors which immediately detect the occurrence of internal arcs.
This means that the effective duration of the arc is considerably shortened and the gas discharge from the switch unit is appropriately reduced.
Metal-enclosed switchgear which comply with the requirements for protection against contact but for which staff safety in the event of arcing has not been proved, may be retrofitted with the system LBW.
In this manner arcing safety may be assured and the effects of arcing reduced.
At various accessible sides open switchgear may be provided with guards instead of with protective covers to provide a defined protection against contact.
The guards may be rails, chains or trellised walls or gates.
In general adherence to the requirements for arc resistant switchgear as regards protection against contact and stability of the switchgear building, cannot be expected for such installations.
By retrofitting the arc detection system LBW and additional measures if necessary, the effects of internal arcing may be limited.
