High voltage SF6 load break switch for switchgear FLN48-12D/FLRN48-12D

Model: FLN48-12D/FLRN48-12D

Description:

SF6 Load Break Switch is an important component of high-voltage switchgear, used for electrical circuit breaking, work switching, protective melting, and other operations in high-voltage electrical equipment to prevent overcurrent and short circuit faults from occurring in the circuit.

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General
Technical Parameter

This series of load switch is developed by our company in 2003 and is applied to XGN14-12SF6 ring main unit.it has high economy, safety, reliability, simple structure, flexible operation, reliable interlocking and convenient installation. It meets the standard of IEC60694、GB3804、GB16926 etc.
Working condition
O Ambient temperature: Max. +40°C ; Min.- -35°C . O Humidity: Maximum average relative humidity daily average:≤95%; monthly average:≤90%. O Altitude:≤2000m. O Seismic resistance:8 degree. O The surrounding air should be free from corrosive, flammable gases, water vapor, etc., and should not be subjected to frequent and severe vibrations. O Annual leaKAge rate:≤0.1%.
Product definition

Drawing

Environmental

ltem	Unit	FLN48-12D/T630-20 type load switch	FLRN48-12D/125-50 type load switch-fuse combination unit
Rated voltage	KV	12	12
Rated frequency	Hz	50	50
Rated current	A	630	125
l min Power frequency withstand voltage,to earth,phase to phase/Fracture	KV	42/48	42/48
Lightning impulse withstand voltage,to earth,phase to phase/Fracture	KV	75/85	75/85
5min Zero gauge pressure rated power frequency withstand voltage	KV	24	24
Rated thermal stability current 3s/2s load switch/earthing switch	KA	20/20	20/20
Rated dynamic current(peak)load switch/earthing switch	KA	50/50	50/50
Rated short circuit closing current load switch/earthing switch	KA	50/50	125/50
Rated closed-loop breaking curreni	A	630
Rated active load breaking curren	A	630
Rated cable charging breaking currenl	A	10	10
Rated short circuit breaking current	KA		50*
Rated transfer currenl	A		1700
Fuse type			XRNT-12KV/100A*
Fuse impact output energy	J		1±0.5
Mechanical life load switch/earthing switch	Times	5000/200	3000/2000
Air insulation distance between charged body and to earth	mm	≥125	≥125
SF6 gas pressure(20℃ relative pressure	bar	0.4	0.4
Opening and closing synchronization	Ms	≤2	≤2
Main loop resistance	μφ	≤65	≤65

High voltage SF6 load break switch for switchgear FLN48-12D/FLRN48-12D

Working condition

Product definition

Drawing

Environmental

Yufeng Electric Co.,LTD

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