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High Voltage Bypass Load Switch

DWP=FLW-12/250-16

12KV,200A/400A
The bypass load switch is a key device used to achieve rapid circuit switching in the power system. It is mainly used to ensure the continuity of power supply through the bypass channel during the maintenance and fault handling of distribution lines to avoid power outages on the user side. Its core functions are safety isolation, load transfer, and emergency power supply.
Mechanical structure: It adopts a two-station design, and the main circuit and bypass circuit are switched by rotating the operating mechanism. It can be used on the ground or mounted on a pole. A temporary pole mounting assembly is available.
Arc extinguishing technology: It uses SF6 gas dielectric insulation and arc extinguishing to ensure that the arc is extinguished quickly during the opening and closing process. It can meet the zero gauge pressure breaking requirements.

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Features Technical Indicators Overall Dimension

‌1. Excellent insulation performance, even at "0 gauge pressure", it can ensure insulation performance.
2. Strong current carrying capacity, good dynamic thermal stability, and higher breaking and closing performance.
3. SF6 gas, compressed air blow-out arc extinguishing, stable and reliable breaking.‌

Core application scenarios

Scenario	Function description
Distribution line maintenance	Temporarily build a bypass power supply channel to ensure continuous power supply for users
Emergency handling of faults	Rapidly isolate the faulty section and restore power to the non-faulty area through bypass
New energy grid connection	Realize seamless switching between distributed energy such as photovoltaic/wind power and the main grid
Guarantee supply of important power supply nodes	Cooperate with UPS system to ensure zero interruption operation of critical loads

Project			Unit	Parameter Value
Rated Voltage			kV	12
Rated Current			A	250	450
Rated Frequency			Hz	50/60
Insulation Properties	Rated Impulse Withstand Voltage	Relatively	kV	95
		Phase	kV	95
		Switch Break	kV	95
	Rated Power Frequency Withstand Voltage	Relatively	kV	45
		Alternate	kV	45
		Switch Break	kV	50
	Partial Discharge		kV/pC	15 kV <10pC
Breaking Performance	Rated Load Breaking Current		A	250	450
	Cable Charging Breaking Current		A	10
	Line Charging Breaking Current		A	1
Main circuit resistance			μΩ	≤ 150
Mechanical Life			次	5000
Annual Leakage Rate				≤ 0.05%
Protection Level				IP68W
Rated Short-Time Withstand Current			kA/2s	16
Rated Short-Circuit Making Current			kA	40
Gas Pressure	Rated Pressure (20℃)		bar	0.3