Indoor Loadbreak Switch Fln36 12kv 630A

• Customization: Available
• Installation: Indoor High-Voltage
• Grounding: Single Ground
• Model NO.: Fln36-12
• Run: Turn The Horizontal
• Switching Mode: Single Throw-in
• Transport Package: Export Package
• Specification: 12kV/630A
• Trademark: SUVELL or OEM
• Origin: China

Product Description

Product Description

12kV Indoor SF6 Switch-Disconnector FL(R)N36 Load Break Switch (LBS) is a double-break rotary load switch using SF6 gas for insulation and arc extinguishing, designed for 12kV power distribution systems. Each unit is sealed with 0.4bar SF6 gas and can be installed vertically or horizontally. A common installation in ring main units involves a horizontal steel partition between the cable and busbar rooms for safety compliance.

Combining the FLN36-12 indoor high-voltage SF6 load switch with other electrical components enables control and protection functions, ideal for industrial and mining enterprises, civil power supply, and secondary substations. The FLRN36-12kV load switch-fuse combination is particularly suited for ring network power supply units due to its matching protection characteristics with transformers.

No.	Items			Unit	Value
					FLN36-12	FLRN36-12
1	Rated voltage			kV	12
2	Rated frequency			Hz	50/60
3	Rated current			A	630	1250
4	Rated insulation level	1 min power frequency withstand voltage	phase-to-phase	kV	42
			phase-to-earth		42
			fracture		48
		Lightning impulse withstand voltage voltage(peak)	phase-to-phase		75
			phase to earth		75
			fracture		85
5	Auxiliary circuit 1 min power frequency			V	2000
6	Rated thermal stability current /duration (3s/2s)		main switch	kA	20/3
			earthing switch		20/2
7	Rated short-circuit making 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 transfer current			A	——	1700
12	Expected short-circuit breaking current			KA	——	50
13	Mechanical life			times	2000
14	SF6 gas rated inflation pressure (20ºC gauge pressure)			MPa	0.04
15	SF6 gas highest pressure (20ºC gauge pressure)			MPa	0.045
16	Annual air leakage rate			%/Y	0.5
17	Synchronicity of opening and closing			ms	≤3
18	circuit resistance			μΩ	≤100

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