Overview
FLN36-12D indoor high-voltage AC load switch is a medium-voltage switchgear developed by our company with reference to international new technologies and according to the relevant standards of my country’s power system. 2004 “3.6kV-40.5kV High Voltage AC Load Switch”, GB1985-2004 “High Voltage AC Isolation Switch and Earthing Switch”, GB/T11022-1999 “Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards”, is the standard of ring network cabinet. main switching element. The load switch is a multi-functional medium-voltage switchgear integrating gate, opening and grounding. It is filled with SF6 gas of 0.05MPa in a fully sealed epoxy resin shell with reinforced structure, and the above is achieved with the least parts. Three functions ensure product quality and improve reliability. Maintenance-free, safe operation for more than 20 years under normal conditions.
Use Environmental Conditions
a) The altitude does not exceed 1000m;
b) Ambient air temperature: upper limit +40, lower limit -25ºC;
c) Relative humidity: the daily average is not more than 95%, and the monthly average is not more than 90%;
d) The surrounding air is not obviously polluted by corrosive gas or combustible gas, water vapor, etc.;
e) No frequent violent vibrations.
The Main Technical Parameters
Project |
Units |
Data |
|
Rated voltage |
kV |
12 |
|
Rated frequency |
Hz |
50 |
|
Rated current |
A |
630 |
|
Rated peak withstand current |
kA |
50 |
|
4s rated short-time withstand current |
20 |
||
Rated making current |
50 |
||
Rated breaking current |
Active load breaking current |
A |
630 |
Closed-loop breaking current |
630 |
||
Cable charging breaking current |
10 |
||
Power frequency withstand voltage 1min alternately, to ground/fracture |
kV |
42/48 |
|
Lightning impulse withstand voltage phase-to-phase, to ground/fracture |
75/85 |
||
SF6 gas relative pressure (20℃ gauge pressure) |
MPa |
≤0.04 |
|
Rated operating voltage (electric) |
v |
AC/DC220 |
|
Shunt release rated voltage |
AC/DC220 |
||
Average opening speed |
m/s |
3.5±1.5 |
|
Average closing speed |
m/s |
3.5±1.5 |
|
Three-phase opening and closing synchronization |
ms |
≤3 |
|
Main circuit resistance |
uQ |
≤120 |
|
Manual operation maximum torque |
N.m |
160 |
|
Phase center distance |
mm |
210±0.5 |