12kV/17.5kV Indoor SF6 Gas Load Break Switch/LBSkits manufactured by Rockwill in China. It adopts SF6 gas as an arc-extinguishing and insulation medium.
12kV/17.5kV Indoor SF6 Gas Load Break Switch/LBSkits
-Rockwill Brand: RLS-12/17.5 type LBSkits load break switch is an indoor high-voltage SF6 load break switch, an switchgear with the rated voltage of 12kV/17.5kV, adopted with SF6 gas as an arc-extinguishing and insulation medium, including the three contactors for switching-on and switching-off and to-ground, and is characteristic in its small volume, its convenient installation and operation and itsthe great adaptability with surroundings.
RLS-RLS-12/17.5of an indoor high-voltage SF6 load switch and RLS-12/17.5D of SF6 load switch plus fuse combination canfunctionto protect and controlthe electric equipments for power supply and transformer substations especially being suitable for ring net cabinet, cable branch cabinet and distribution switching substation.
RLS-12/17.5of an indoor high-voltage SF6 load switch and RLS-12D load switch plus fuse combination are complied withthe standards of GB3804-1990, IEC60256-1,1997, GB16926, IEC60420 etc..
Service environment:
a) Airtemperature
Maximumtemperature: +40℃; Minimumtemperature:-5℃
b) Humidity
Monthly average humidity 95%; Daily average humidity 90%.
c) Altitude above sea level
Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) Nofrequent violent shake
Note: For short circuit breaking and peak current isbased on Fuseplus combination.
|
No
|
Item
|
Unit
|
Parameter
|
|
1
|
Rated voltage
|
kV
|
12/17.5
|
|
2
|
Rated frequency
|
Hz
|
50/60
|
|
3
|
Rated current
|
A
|
630/800
|
|
4
|
wet
1min Power frequency withstand voltage
dry
|
kV
|
38/45
48/50
|
|
5
|
Lightning impulse withstand voltage
|
kV
|
75/95
|
|
6
|
Rated short circuit breaking current (peak)
|
kA
|
Depend on Fuse
|
|
7
|
Rated activeload and close circuit breaking current
|
A
|
630
|
|
8
|
Rated transferring current
|
A
|
1700
|
|
9
|
Rated short circuit making current (peak)
|
kA
|
40
|
|
10
|
Rated cable(line) charging breaking current
|
A
|
50 and 10
|
|
1 1
|
Cable charge breaking current in earthing fault
|
A
|
20
|
|
12
|
Rated withstand current (peak)
|
kA
|
40
|
|
13
|
Short time withstand current (2s)
|
kA
|
20
|
|
14
|
Mechanism life
|
times
|
2000
|
Matching dimension of SF6 load break switch-fuse combination
Fig 1) SF6 load break switch without upper cubicle
Outline dimension & installation sizes
