Daelim LW25 550KV SF6 Gas Live Tank Electrical Circuit Breaker

H.V. A.C.porcelain type SF6 gas circuit breakers, with voltage from 40.5-550kV and rated current up to 4000A, manufactured by our company, are provided with three kinds of operating mechanism, pneumatic, spring and hydraulic type.

Product Details Company Profile

Description

Place of Origin: Beijing, China (Mainland)
Brand Name: Daelim
Model Number: LW25
Type: High Voltage
Poles Number: 3
Rated Short-Circuit Breaking Current: 50ka
Rated voltage: 550kv
Rated frequency: 50/60Hz
Rated current: 3150~4000A
Standard: GB10963/IEC60898
Brand: Daelim
Certificate: IEC 62271-100
Creepage Distance: 11000~17000mm
Gas: SF6
Color: Black&white

1.Brief Introduction

H.V. A.C.porcelain type SF6 gas circuit breakers, with voltage from 40.5-550kV and rated current up to 4000A, manufactured by our company, are provided with

three kinds of operating mechanism, pneumatic, spring and hydraulic type.

Motor is used in spring mechanism to charge closing spring and charge opening spring at closing. Disk spring is used in hydraulic mechanism to be charged instead

of traditional compressed nitrogen gas for charge, and hydraulic driving is used at both opening and closing. Compressed air is used in pneumatic mechanism as driven

force for open while spring is used for close. The three kinds of operating mechanisms have their own features and are used in circuit breakers of different voltage

class respectively.Due to the unit structure in circuit breaker, there are advantages of minimized number of breaks,lower number of parts, simple structure,high

reliability and long period of inspection.

2.Normal Service Condition

2.1.Altitude:≤3000m

2.2.Humidity monthly:≤90%
2.3.Max .wind velocity:≤35m/s
2.4.Pollution class:Ⅲclass,IV class
2.5.Ambient air temperature:-35℃~40℃(It’s satisfied under condition of -40℃ in heavy cold area)
2.6.Max .temperature difference daily: 25K
2.7.Earthquake withstand density:8 degree
2.8.Ice coating: ≤10mm
2.9.Max. radiance from sun: 1000 W/m2
Note: When product is used under the condition out of above range, user and manufacturer shall consult to confirm.

No.	Item	Unit	LW 550/Y
1	Rated Voltage	kv	550
2	Rated Frequency	Hz	50/60
3	Rated Current	ka	3150,4000
4	Rated short-circuit breaking current	ka	50,63
5	Rated short-circuit making current	ka	125,160
6	Rated short-time withstand current and duration	ka	50/63(3S)
7	Rated peak withstand current	ka	125,160
8	Closing time	ms	65-95
9	Opening time	ms	≤20
10	Breaking time	ms	≤40
11	Rated SF6 gas pressure (at 20°C)	mpa	0.60
12	Creepage Distance	cm/kv	2.0,2.5,3.1
13	Operating mechanism		Hydraulic
14	Applied standards		IEC 62271-100