FZW28-12F Boundary Vacuum Load Break Switch Outdoor Intelligent Type
FZW28-12F Outdoor Intelligent Outdoor Boundary Circuit Breaker
product information
Product name: FZW28-12 outdoor demarcation vacuum load switch
Category: high voltage components
Product introduction: FZW28-12 series outdoor vacuum load switch is suitable for outdoor three-phase AC power distribution system with rated voltage of 12kV and rated frequency of 50Hz. It is used for opening and closing load current and closing short-circuit current.
Overview of FZW28-12 Outdoor Boundary Vacuum Load Switch
The FZW28-12 series of outdoor vacuum load switches are suitable for outdoor three-phase AC power distribution systems with a rated voltage of 12kV and a rated frequency of 50Hz. They are used to open and close load currents and close short-circuit currents.
It is suitable for substations, industrial and mining enterprises, cities and clothing networks as protection cities, rural power distribution networks, and places with frequent operations.
The boundary load switch consists of two parts, the FZW28-12 vacuum load switch and the controller, which are electrically connected through aviation sockets and outdoor sealed control cables. It can reliably judge the milliampere zero-sequence current and phase-to-phase interruption current inside and outside the detection range, and can be suitable for power distribution systems with different neutral point grounding methods.
Main technical parameters of FZW28-12 outdoor boundary vacuum load switch
| Serial number | project | unit | Numerical value | ||
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated insulation level | 1min power frequency withstand voltage (between poles to ground/fracture) | kV | Dry | 42/48 |
| Lightning impulse withstand voltage (between poles to ground/fracture) | wet | 34 | |||
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Rated current | A | 630 | ||
| 5 | Rated delay withstand current and duration | kA/4s | 16 | 20 | |
| 6 | Rated peak withstand current | KA | 40 | 20 | |
| 7 | Rated short-circuit making current | KA | 40 | 50 | |
| 8 | Mechanical life | Second-rate | 10000 | ||
| 9 | net weight | kg | 198 | ||
Technical parameters of FZW28-12 outdoor demarcation vacuum load switch demarcation point quick disconnect switch body
| project | unit | Numerical value |
| Rated voltage, frequency | kV,Hz | Rated voltage, frequency |
| Rated current | A | Rated current |
| Rated short-time withstand current | KA | Rated short-time withstand current |
| Rated making current | KA | Rated short-time withstand current |
| Power frequency withstand voltage to ground/phase to phase/fracture | kV | Power frequency withstand voltage to ground/phase to phase/fracture |
| Lightning impulse withstand voltage to ground/phase/fracture | kV | Lightning impulse withstand voltage to ground/phase/fracture |
| Insulation resistance | MΩ | Insulation resistance |
| Mechanical life, electrical life under rated current | Second-rate | Mechanical life, electrical life under rated current |
| weight | kg | weight |
| SF6 gas pressure/year leakage rate | SF6 gas pressure/year leakage rate | |
| CT ratio | CT ratio | |
| Zero sequence current CT ratio | Zero sequence current CT ratio | |
| Zero sequence voltage phase detector ZPD | mA,DEC | Zero sequence voltage phase detector ZPD |
| Power Transformer SPS | KV/V.VA | Zero sequence voltage phase detector ZPD |
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