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FN7-12DR type AC high-voltage load switch is a new type of gas production type indoor high-voltage load switch, which is suitable for the three-phase AC power system with AC 50Hz and rated voltage 12KV, and is used for breaking load current and closing short-circuit current.
Overview
FN7-12DR type AC high-voltage load switch is a new type of gas production type indoor high-voltage load switch, which is suitable for the three-phase AC power system with AC 50Hz and rated voltage 12KV, and is used for breaking load current and closing short-circuit current.
Main Technical Parameters
| Rated voltage(KV RMS) | 12 | ||
| Insulation level | Power frequency 50Hz withstand voltage 1min(KV.Effective value) | Phase to phase 42 | Isolation fracture 48 |
| Lightning impulse withstand voltage(KV.Peak) | Phase to phase 75 | Isolation fracture 85 | |
| Rated current (A) | 400 | 630 | |
| Rated thermal stable current (KV.Effective value 4S) | 12.5 | 20 | |
| Rated dynamic stable current(KV.Value) | 31.5 | 50 | |
| Rated short circuit closing current(KA.Peak) | 31.5 | 50 | |
Installation And Use
Normal use conditions:
Ambient air temperature: Upper limit: +40℃ ; Lower limit: 10℃ in general area, -25℃ in high cold area
Altitude: The sea level is 1000m and below
Relative humidity: daily average less than 95%, monthly average less than 90%
The surrounding air should not be significantly polluted by corrosive or flammable gases and water vapor
No frequent violent vibration
Main Specification
| Name | Model | DS | DK | L | R | RA | F |
| The ground switch is at the incoming end | The ground switch is at the outgoing end | Interlocking device | Fuse | Knock out fuse | Electric brake opening device | ||
| Load switch | FN7-12 | – | – | ||||
| FN7-12DSL | △ | – | △ | – | – | ||
| FN7-12DXL | – | △ | △ | ||||
| FN7-12R | – | – | – | △ | – | – | |
| FN7-12DSLR | △ | – | △ | △ | – | – | |
| FN7-12DXLR | – | △ | △ | △ | – | ||
| FN7-12RAF | – | – | – | – | △ | △ | |
| FN7-2DSLRAF | △ | – | – | △ | △ | ||
| FN7-2DXLRAF | △ | – | △ | △ |
Dimensions And Mounting Dimensions (mm)
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