Load Break Switch (FLN36-12 SF6 Gas Insulated Load Break Switch)

Load Break Switch <small>(FLN36-12 SF6 Gas Insulated Load Break Switch)</small>
Load Break Switch <small>(FLN36-12 SF6 Gas Insulated Load Break Switch)</small>
Load Break Switch <small>(FLN36-12 SF6 Gas Insulated Load Break Switch)</small>
Load Break Switch <small>(FLN36-12 SF6 Gas Insulated Load Break Switch)</small>
Load Break Switch <small>(FLN36-12 SF6 Gas Insulated Load Break Switch)</small>
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Introduction to SF6 Gas Insulated Load Break Switch
The FLN36-12 SF6 load break switch is a double fracture rotary switch that uses sulfur hexafluoride gas as the insulating and arc quenching medium, suitable for 10KV 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.

Technical Parameters of SF6 Gas Insulated Load Break Switch
No. Item Unit Value
FLN36 FLRN36
1 Rated voltage KV 12
2 Rated frequency Hz 50
3 Rated current   A 630 125
4 Rated insulation level 1 min power frequency withstand voltage phase-to-phase, phase to earth KV 42
fracture 48
Lightning impulse withstand voltage (peak) phase-to-phase, phase to earth 75
fracture 85
5 Auxiliary circuit 1min power frequency withstand voltage V 2000
6 Rated short-time withstand current / duration main switch KA 20/3
earthing switch 20/2
7 Peak withstand current and short-circuit breaking current KA 50 125
8 Rated closed circuit breaking current A 630
9 Rated active load breaking current A 630
10 Rated cable charging breaking current A 10
11 Rated breaking no-load transformer capacity  KVA 1250
12 Breaking transfer current A 1700
13 Expected short-circuit breaking current KA 50
14 Mechanical life times 2000
15 SF6 gas rated inflation pressure (20 ℃gauge pressure)   MPa 0.04
16 SF6 gas highest pressure (20 ℃gauge pressure)
MPa 0.045
17 Dimensions (width × height × depth)
mm 345 × 420× 730
Fuse Rated Parameters
No. Rated Voltage (KV) Fuse Rated Current (A) Fuse Link Rated Current (A) Rated Breaking Current (KA)
1 12
 
40 6.3, 10, 16, 20, 25, 31.5, 40 40
2 100 50, 63, 80, 100 40
3 125 125 50
Operating Mechanism for SF6 Gas Insulated Load Break Switch
1. Operating mechanism (K type for incoming cabinet, A type for outgoing cabinet)

Main switch function: manual and electrical opening and closing operations are both allowed. The closing is only allowed when the earthing switch is in open state.

Earthing switch function: the opening and closing operation can only be done manually. When the main switch is in closed state, the earthing switch is not available.

Auxiliary switch:
Closing position: 2 normally open -2 normally closed;
Opening position: 2 normally open -2 normally closed;
Grounding position: 2 normally open -2 normally closed.

Mechanism indication:
Main switch and earthing switch status indication (K-type operating mechanism)
Main switch and earthing switch status indication, blown fuse indication (A-type operating mechanism)
Shunt trip coil is for A type operating mechanism.

2. Electric operation: automatic opening and closing can be achieved through motor drive and control unit. The motor operating voltage can be AC220V, DC220V, DC48V, DC24V.

Outline of SF6 Gas Insulated Load Break Switch
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