FLN43-12 Type Three Position High Voltage Load SwitchDetailed product description：

The FLN43-12 three position high-voltage load switch has a simple structure and complete functions:

Equipped with a multifunctional rotating three position switch inside;  
The three position switch contact box adopts imported environmentally friendly materials;  
Coaxial operation of "closure isolation grounding" without the need for interlocking devices;  
Grounding switch related closing capacity;  
There are no composite insulation measures between phases.

FLN43-12 type three position high-voltage load switch has safe and reliable performance:

Using SF6 gas as insulation and arc extinguishing medium;  
The main components of the switch are all located in a sealed chamber;  
Stainless steel chamber, fully welded and sealed;  
Good airtightness, annual leakage rate ≤ 0.1%;  
No on-site SF6 inflation work is required;  
There is a pressure release device at the rear of the sealed chamber;  
Maintenance free operation within the service life, with an expected lifespan of 20 years.
The insulation design has a large margin:
When used as a load switch and grounding switch, it can close the rated short-circuit closing current at least twice;  
Used as an isolation switch, capable of breaking the rated current 100 times;  
Operating mechanism
Operate vertically using a detachable handle;  
Adopting a spring operated mechanism; The operating mechanism of the composite electrical unit is equipped with an energy storage release device;  
The energy storage trip device of the operating mechanism can automatically trip the load switch when the fuse is blown or the parallel release device is activated;  
There are two operation modes to choose from: manual and electric;  
Remote control can be achieved.

Technical parameters of FLN43-12 three position high-voltage load switch

serial number	Name		unit	Technical specifications
one	rated voltage		kV	twelve
two	rated current		A	six hundred and thirty
three	rated frequency		Hz	fifty
four	Rated current breaking times		time	one hundred
five	Lightning impulse withstand voltage	To the ground, alternating with each other	kV	seventy-five
		isolation gap	kV	eighty-five
six	1-minute power frequency withstand voltage	To the ground, alternating with each other	kV	forty-two
		isolation gap	kV	forty-nine
seven	1-minute power frequency withstand voltage of auxiliary circuit		kV	two
eight	Rated short-time withstand current (2s)		kA	twenty-five
nine	Rated peak withstand current		kA	sixty-three
ten	Rated closed-loop breaking current		A	six hundred and thirty
eleven	Rated Active load breaking current		A	six hundred and thirty
twelve	5% rated active load breaking current		A	thirty-one point five
thirteen	Rated cable charging breaking current		A	ten
fourteen	Rated short-circuit closing current		kA	sixty-three
fifteen	Rated pressure of SF6 gas (20 ℃ gauge pressure)		MPa	zero point zero five
sixteen	Annual leakage rate of SF6 gas		%	≤0.1
seventeen	protection level		—	IP65