Two-Position Oil-Immersed Load Switch 12-24kV

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  • Details

Product Introduction:

The FYB-24 type two-position oil-immersed load switch is suitable for integrated transformers with AC frequencies of 50Hz and 60Hz and a rated voltage of 24kV. It is a load switch specially designed and manufactured by our company for the increased voltage class of domestic integrated transformers.


The load switch adopts a two-position structure. It uses transformer oil as the insulation and arc-extinguishing medium, with spring energy storage and three-phase linkage. It can accurately and quickly open or close the rated load current and can withstand short-term fault current under specified conditions. The contact system of the switch adopts a double-break floating contact bridge. The moving and static contacts have good contact performance, low resistance, and strong current-carrying capacity. The unique structural design gives the contact system an excellent electromagnetic compensation effect, greatly improving its fault resistance under short-circuit conditions.


The load switch has two positions: open and closed. It is operated by rotation: clockwise to close and counterclockwise to open, with rotation angles of 90° and 120°. According to different power grid needs and configurations, it can be used as a control device for terminal-type integrated transformers, or three load switches can be used to form a control device for ring network type integrated transformers. The load switch can also be equipped with an auxiliary travel switch and an electric operating mechanism to suit various types of transformers. Customers can choose corrosion protection classes such as C3, C4, C5, etc., according to design requirements. 


Serial
Number
NameUnitFYB-10/315-20FYB-(10-24)/630-25
RatedvoltageKV10 24 
Power Frequency withstand voltageGround,
interphase
KV65 
Isolating
distance
KV79 
Lightning Impulse withstand voltageGround,
interphase
KV125 
Isolating
distance
KV145 
RatedcurrentA315 630 
Rated Short-circuit withstand currentKA20/4S25/4S
Rated Peak withstand currentKA50 63 
Main Circuit ResistanceμΩ<200
<200
Mechanical LifeNumber of times>3000

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