Chinese supplier 10kV 12kV switch-disconnector SF6 insulated LBS Load Break Switch
Product Description
FLN36 12kV SF6 load break switch is a switch equipment for medium voltage Switchgear, using SF6 gas as arc extinguishing and insulating medium.There are three working positions:open, closed, earth position in the switch. The compact size, easy installation, and fine adaptability to environment make the switch suitable for many different applications.
It can be divided into two types: FLN36-12D ( K type single spring operating mechanism ),FLRN 36-12D (A type double spring operating mechanism). The latter type could be equipped with Fuse combination, having control and protecting function, which can be used for power supply and substation as a protecting and control device, especially suitable for ring main unit, cable distribution box and switching substation.
Manual operating mechanism
K type spring dual-function operating mechanism: as a inlet control unit, the working principle of K type spring operating mechanism is spring press and release.
Earthing operation: driven by the handle, upper crank arm rotates and presses spring 2 to store energy, when the max energy reaches continue rotate the rank arm, the energy storage spring starts to release energy and drive the upper trigger, enables the connecting bar to drive the crank arm, crank arm rotates and drives the moving contactor for earthing.
Switch on operation: driven by the handle, lower crank arm 1 rotates, presses spring 2 to store energy, when the energy released, it drives the trigger 8, enables connecting bar to drive the crank arm, crank arm rotates and drives the moving contactor and load break switch turns on.
Switch off operation: rotate the main shaft crank arm counterclockwise by the handle, release the energy storage spring and the load break switch turns off.
A type spring dual-function operating mechanism: as a outlet control unit.
Working principle of A type mechanism is same as K type, in addition, it has fuse striker trip function. For A type mechanism. Electromagnetic trip is also available for customers requirement.
Switch on operation: driven by the handle, lower crank arm 1 rotates to press switch on spring 12 and switch off spring 8 at the same time, to provide sufficient energy required by switching off. When the lower crank arm 1 buckles the pin and drives trigger to move, it makes the lower roller wheel tripped, and release the switch on spring and load break switch turns on.
Switch off operation: press the switch off button or push the trip pin 2 by the fuse striker, release the spring and load switch turns off.
Earth operation: earthing operation of A type mechanism is the same as that of K type.
Motorized operating mechanism
Motor operation can be added to both types of operating mechanisms, which means it can be operated manually or motorized.
Operating voltage: DC48V AC/DC 110V 220V
Parameters:
Technical Parameter of FLN36-12
Ambient condition
1.Ambient temperature:-40℃ ~+40℃
2.Relative humidity:Daily average ≤ 95%
Monthly average ≤ 90%
3.Altitude: ≤ 2000m
4.Earthquake intensity:≤ 8 degree
5.No corrosive gas,no combustible gas,no steam and shake.
*Annual leakage rate ≤ 0.1%
*Special conditions:When the altitude > 2000m,please indicate in order to adjust the designing scheme.
| MAIN TECHNICAL SPECIFICATION | UNIT | FLN36-12D/T630-20 Load break switch | FLRN36-12D/125-50LBS + Fuse-combination units | |||
| Rated voltage | kV | 12 | 12 | |||
| Rated frequency | Hz | 50 | 50 | |||
| Rated current | A | 630 | 125 | |||
| Short-duration(1min) power frequency withstand voltage | kV | 42 | 42 | |||
| Lightning impulse withstand voltage | kV | 75 | 75 | |||
| Rated power frequency withstand voltage(5min) | kV | 24 | 24 | |||
| Rated short-time withstand current(Load break switch/3s) | kA | 20 | 20 | |||
| Rated short-time withstand current(Earthing switch/2s) | kA | 20 | 20 | |||
| Rated peak withstand current(Load break switch) | kA | 50 | 50 | |||
| Rated peak withstand current(Earthing switch) | kA | 50 | 50 | |||
| Rated short-circuit making current(Load break switch) | kA | 50 | 125 | |||
| Rated short-circuit making current(Earthing switch) | kA | 50 | 50 | |||
| Rated closed-loop dropout current | A | 630 | ||||
| Rated active load breaking current | A | 630 | ||||
| Rated cable-charging breaking current | A | 10 | 10 | |||
| Rated short-circuit breaking current | kA | 50* | ||||
| Rated transfer current | A | 1750* | ||||
| Fuse type | XRNT-12kV/125A* | |||||
| Fuse impact output energy | J | 1±0.5 | ||||
| Mechanical endurance LBS/Earthing switch | Time | 5000/2000 | 5000 | |||
| Air insulation distance of charged body and ground | mm | ≥ 125 | ≥ 125 | |||
| SF6 Gas pressure(Relative pressure at 20℃ ) | bar | 0.4 | 0.4 | |||
| Opening and Closing simultaneity | ms | ≤ 2 | ≤ 2 | |||
| Main circuit resistance | μΩ | ≤ 65 | ≤ 65 | |||
 |
Yueqing Liyond Electric Co.,Ltd was established in 2011, located in Yueqing City, Zhejiang Province, China. Liyond has become a high-tech enterprise integrating the R&D, manufacturin and sales of mid and high Voltage Switchgear and accessories products. We have excellent management team and technical team. They have tacit cooperation in product development, promotion and maintenance. Our business philosophy is customer-centric. "Service" throughout the company's operations and management of every detail, has received extensive trust and support from customers. Liyond realize standardization and institutionalize management, committed to the power industry development and innovation.
|
|
Q: Could I have prices of your products?
A: Welcome. Please feel free to send us inquiry here. We will reply you within 24 hours.
Q: Can I get a sample before the bulk order?
A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.
Q: Can we print our logo/ company name on products?
A: Yes, of course, we accept OEM, then need you to provide brand authorization to us
Q:Do you accept product customization?
A:Yes, of course, please provide specific drawings or parameters, we will quote you after evaluation
Q: What is the lead time?
A: The lead time depends on the quantities ordered, generally within 7-20 days after receiving the payment.
Q: What is your Trade Terms?
A: We accept EXW, FOB, CIF, FCA, etc.
Q: What is your payment method?
A: We accept T/T, Western Union, Paypal, irrevocable L/C at sight, etc
Q: Do you inspect the finished products?
A: Yes, each step of production and finished products will be came out inspection by QC department before shipping. And we will provide goods inspection reports for your reference before shipment
Q: How to solve the quality problems after sales?
A: Take photos of the quality problems and send to us for our checking and confirming, we will make a satisfied solution for you within 3 days.
Any inquiries or request, please feel free to contact us!
Product Categories : Load break switch > SF6 load break switch
