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 | |