1.FZN21-12KV 11KV 10KV indoor Gas Insulated Air Load Break Switch
FZN21-12(R)D/T125-31.5 Series Indoor AC high voltage load switch- fuse combination units appliances for three-phase AC 10kV, 50Hz power system, or with the complete power distribution equipment and loop-network switch cabinet , combined substation and other ancillary uses, is widely used in urban network construction and transformation engineering, industrial and mining enterprises, high-rise buildings and public facilities ,can be used as ring power supply unit or terminal equipment, play power distribution, control and protection.
Technical performance of the products meet the IEC publication 60265-1/FDIS “high voltage switches, Part 1: Rated voltages below 1kV over 52kV high voltage load switch”, IEC60420 “High Voltage AC load switch – fuse combination units”; and CB16926 “AC High-voltage load switch - fuse combination units”, GB3804 “3-63kV AC high voltage switches” requirement.
2.Product parameter data
| No | Item | Unit | Value |
| 1 | Rated voltage | kV | 12 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 630 | 125 |
| 4 | Rated insulation level | 1min power frequency withstand voltage | kV | Arc-quenching chamber fracture 48 |
| (effective value) | Earth , phase 42, insulating fracture 48 |
| Lightning impulse withstand voltage (peak) | Earth , phase 75, insulating fracture 85 |
| 5 | Rated dynamic current (peak) | kA | 50 | |
| 6 | 4S thermal current | kA | 20 | |
| 7 | Rated power load breaking current | A | 630 | |
| 8 | Rated closed-loop breaking current | A | 630 | |
| 9 | Rated cable charge breaking current | A | 10 | |
| 10 | Rated breaking no-load transformer capacity | KVA | 1250 |
| 11 | Rated breaking AC current | A | 3150 |
| 12 | Rated short-circuit closed current | kA | 50 |
| 13 | Rated current breaking times | times | 2000 |
| 14 | Mechanical life | times | 10000 |
| 15 | Permitted wear-thickness of vacuum arc-quenching chamber contact | mm | 2 |
| 16 | Manual operating torque | Nm | >200 |
3.Environmental application
A. The ambient air temperature: Max.: +40 °C. Min: -10 °C.
B. The altitude ≤ 1000m.
C. The relative humidity of air. daily average ≤ 90%. monthly average ≤ 95%.
D. The ambient air should not be obviously polluted by corrosively or the flammability gas and gleam. etc.
E. Without frequent shake.
F. Environment degree: grade Ⅱ.
4.Technical diagram
5. Warehouse view
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FZN21 12KV Indoor Gas Insulated Air Load Break Switch Images
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