25kV Three Phase Oil LBOR Switch
The two-position oil-immersed load switch is mainly used in pad mounted transformers. It has a spring operating mechanism and is a three-phase switch, capable of performing load opening and closing operations. Two such two-position load switches can also form a ring network switch system, which is used in ring network distribution systems. The states of the two-position switch are: connected and disconnected. The 35kV grade can be used for transformers in wind power projects. Before use, it needs to be dried along with the transformer.



Mechanical Working Principle
The operating mechanism is a spring energy storage device. This load switch has two working positions: closed and disconnected. The directions of the two working positions are at a 90-degree angle. Depending on the different configurations of the switch, it can form two types of power distribution systems: terminal type and ring network type. This load switch is not only applicable to the 20kV power grid, but also to the original 10kV power grid.
Technical Parameters
|
Item |
Value |
|
Rated voltage |
25kV |
|
Rated current |
630A |
|
Power Frequency |
60Hz |
|
Rated thermostable current |
20kA / 2 seconds |
|
Rated dynamic current |
50kA |
|
Impulse withstand voltage |
|
|
Ground between phase across open contacts |
125kV 145kV |
|
Power frequency withstand (1 min) |
|
|
Ground between phase across open contacts |
55kV 60kV |
|
Contact mechanical life |
≥2000 times |
Advantage
Design and test according IEEE std, Wenzhou Best Loadbreak switch can compatible with various transformer tank structures.
Using Wenzhou Best Loadbreak switch reduced maintenance frequency and improve transformer safety.


FAQ
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