The epoxy insulated load switchgear used for branching and dividing 22.9kV underground distribution lines is the world's first new concept product in which the main body block and the ground are molded into a solid insulation integrated structure.
The risk of explosion due to gas is completely eliminated by applying the epoxy mold insulation method and vacuum blocking method instead of the existing SF6 gas. In addition,there is no need for maintenance due to gas leakage or replenishment,and due to the excellent insulation performance of epoxy,it can be applied not only to general areas but also to areas that are salty and contaminated.
The operation method is the same as the existing gas insulation method,so that the main body part input-open and the ground part input-open can be freely opened. In particular,the grounding switch completely solved the problem of grounding failure by applying a vegetable oil insulation method instead of a vacuum cutoff.
responsibility
-Completely solving the problem of ground switch failure through vegetable insulating oil
-Significantly improve the insulation performance between the poles of the ground
-Existing vacuum cut-off method [125kV BIL] ⇒ Newly developed vegetable oil method [over 180kV BIL]
safety
-Three-phase short circuit accident is prevented by separating the insulating housing for each phase.
-Resolve the risk of explosion due to pressure expansion in the SF6 gas insulation method
Environmentally friendly epoxy insulation
-Can be applied to damaged areas due to the use of epoxy resistant to contaminated environments
-Maintenance-free structure that does not require gas and pressure release locking device [Maintenance Free]
-Environmentally friendly with no use of SF6 gas with a warming factor of 23,900 times that of CO2
Other technical notes
-Metal phase connection bus bar and epoxy shrinkage,prevention of epoxy destruction by expansion coefficient difference
-Silicon injection molding method eliminates eccentricity defects [additional inspection such as X-ray and ultrasonic waves]
-Semi-permanent life is guaranteed through the use of vegetable insulating oils that are 3 to 4 times better than conventional mineral oils in anti-aging and oxidation resistance.
-No occurrence of carbonized deposits [furan] from existing insulating oil [mineral oil] during long-term use