Introduction
The FLN36 SF6 gas-insulated load break switch is a double fracture rotary switch that uses sulfur hexafluoride gas as the insulating and arc quenching medium, suitable for 7.2-24kV distribution system XGN15-12 RMU. Each load break switch is filled with SF6 gas in pressure of 0.4bar and the gas is permanently sealed.
Advantage
Safety: Made to highest IEC standards, non corrosive leak proof enclosure, inspection windows, integrated voltage indicator, interlocking device, gas gauge, etc.
Economy: A life span of minimum 30 years, sealed for life, low maintenance costs
Reliability: Stringent testing of each unit, extremely durable and reliable actuator, worldwide use, etc.
Smart integration: Modular construction, compact size, easy installation, one switch - many applications
Structure
The FLN36 is a SF6 gas-insulated two or three-position (two-position: close, open, three-position: close, open, earth) Load break switch (switch disconnector) for medium voltage switchgear within secondary distribution networks (such as Ampower-XGN15, Schneider-SM6). All electrically active parts, including the earthing switch, are in robust epoxy resin housing filled with SF6 (1.4 bar).
There are two types of operating mechanism, the single spring device(K type) and the double spring device with fuse tripping button (A type). Electric operation can be added to both types of operating mechanism, the electric operating voltage can be AC220V, DC220V, DC48V, DC24V.
Auxiliary switch on electric operation mechanism:
Closing position: 2 normally open -2 normally closed (2NO+2NC)
Opening position: 2 normally open -2 normally closed (2NO+2NC)
Earthing position: 2 normally open -2 normally closed (2NO+2NC)
Above Auxiliary switch contacts are standard, if you need more contacts, please specify it when ordering.
Technical Parameters
|
Switch Type
|
|
FLN36 Switch
|
FLRN36 Switch-fuse
|
|
Rated voltage
|
Ur [kV]
|
7.2/12/24
|
|
Rated insulation voltage
|
Us [kV]
|
7.2/12/24
|
|
Withstand voltage
|
Ud(1min)[kV]
|
30/42/65 (common value)
34/48/79 (across the isolating distance)
|
|
Impulse withstand voltage
|
Up [kV]
|
60/75/125 (common value)
70/85/145 (across the isolating distance)
|
|
Raged frequency
|
Fr [Hz]
|
50/60
|
|
Rated current
|
Ir [A]
|
630
|
125
|
|
Rated short-time withstand current (3s)
|
[kA]
|
25
|
****
|
|
Rated peak withstand current
|
[kA]
|
63
|
****
|
|
Rated short-time current duration
|
[s]
|
3
|
|
Auxiliary circuit power frequency withstand voltage (1min)
|
[V]
|
2000
|
|
Rated active load breaking current
|
[A]
|
630
|
|
Rated closed circuit breaking current
|
[A]
|
630
|
|
No-load transformer capacity
|
[KAV]
|
1250
|
|
Cable charging current
|
[A]
|
10
|
|
SF6 gas rated inflation pressure (20 ℃gauge pressure)
|
[MPA]
|
0.045 ± 0.005
|
|
SF6 gas yearly leakage rate
|
[per year]
|
≤1%
|
|
Breaking transfer current
|
[A]
|
****
|
1700
|
|
Max. fuse
|
[A]
|
****
|
125
|
|
Mechanical endurance (switch)
|
[cycles]
|
5,000
|
|
Mechanical endurance (earthing)
|
[cycles]
|
2,000
|
|
Different period of three-phase closing
|
[ms]
|
≤ 5
|
|
Different period of three-phase opening
|
[ms]
|
≤ 5
|
|
Main circuit resistance
|
[Ωμ ]
|
≤ 65
|
|
Pole-center distance
|
[mm]
|
210 ±2, 275 ±2
|
Fuse Technical Parameters
|
Rated voltage
|
Ur [kV]
|
7.2, 12, 24
|
|
Rated current
|
Ir [A]
|
40
|
100
|
125
|
|
Fuse link rated current
|
[A]
|
6.3, 10, 16, 20, 25, 31.5, 40
|
50, 63, 80, 100
|
125
|
|
Rated breaking current
|
[kA]
|
40
|
40
|
50
|
More details please go to "Download" area to download the catalogs or contact us!
|
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