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FKN12-12D/T630-20 FKRN12-12D/T125-31.5 INDOOR HIGH VOLTAGE PNEUMATIC LOAD SWITCH
Product Overview
FKN12-12D/T630-20 FKRN12-12D/T125-31.5 indoor high- voltage compressed air load switch is suitable for three- phase high-voltage switchgear of 12KV and below, as the control and protection of power equipment such as transformers, cables, overhead lines, etc. ; Especially suitable for terminal substations and box-type substations of urban and rural networks. It is also suitable for the control and protection of ring network and dual radiation power supply units.
Main Technical Parameters
| No. | Item | Unit | Data | ||
| FKN12-12D | FKRN12-12D | ||||
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated frequency | Hz | 50 | ||
| 3 | Rated current | A | 630 | 1250 | |
| 4 | Lightning impulse withstand voltage | kV | to earth and interphase 42，isolating fracture 48 | ||
| 5 | 1 min Power frequency withstand voltage | kV | to earth and interphase 75，isolating fracture 85 | ||
| 6 | Rated short-time withstand current | load switch | kA | 20 | - |
| grounding switch | kA | 20 | |||
| 7 | Rated short circuit duration | load switch | s | 4 | |
| grounding switch | s | 2 | |||
| 8 | Rated short-circuit closing current (peak) | 50 | - | ||
| 9 | Rated breaking current | Active load breaking current | A | 630 | - |
| Closed-loop breakingg current | A | 630 | - | ||
| 5% Rated active load breaking current | A | 31.5 | - | ||
| Cable charging current | A | 10 | - | ||
| Breaking no-load transformer capacity | KVA | 1250 | |||
| 10 | Rated short circuit breaking current (current limiting fuse) | KA | - | 31.5 | |
| 11 | Rated transfer current | A | - | 1200 | |
| 12 | Mechanical life | Times | 2000 | 2000 | |
| 13 | Impactor output energy | J | J | 1+0.5 | |
Appearance And Installation Dimensions
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