FZW28-12F Outdoor Boundary Vacuum Circuit Breaker
FZW28-12F outdoor Boundary Vacuum Circuit Breaker, or called Boundary Load Break Switch, is applied to rated voltage 12kV, AC 50HZ outdoor distribution equipment.
Description
Description
FZW28-12F outdoor Boundary Vacuum Circuit Breaker, or called Boundary Load Break Switch, is applied to rated voltage 12kV, AC 50HZ outdoor distribution equipment, use for opening .closing load current and closing short circuit current. Applicable to substations and industrial and mining enterprises and city, rural network for protection and control purposes, and city, rural network automatic distribution net and frequent operation place .
This product is applicable for operation of control switch of overhead line distribution systems, there are several types, VPS-12-type boundaries vacuum load switch with no oil, institutional simple. Reliable, no maintenance and other advantages, has been widely used. The product with the FDR-based fault detector or RTU remote terminal unit equipment combine to form a very simple structure, distribution automation system that allows the automatic overhead lines fault location and fault segment of the automatic quarantine. In order to update our existing distribution switchgear, so free of oil and automation features of the distribution equipment for the transformation.
Environmental conditions
1. Altitude: not higher than 2000m.
2. Air temperature: -40℃ to +85℃
3. Relative humidity: monthly average ≤90%, daily average: ≤95%
4. Earthquake intensity: ≤ 8 degree
5. Pollution Class: 3 degree
6.Icing thickness:10mm
7.Wind pressure: no more than 700Pa( equal to wind speed 34m/s)
Technical Data
| Rated voltage | KV | 12 | |
| Rated current | A | 630 | |
| Rated frequency | HZ | 50 | |
| Rated short-time withstand current (4s) | KA | 20 | |
| Rated short-circuit closing current (peak) | KA | 50 | |
| Operation voltage | V | AC220 (80%-110%) | |
| Power frequency withstand voltage(1min) | To earth | KV | 50 (GB.42) |
| Phase to phase | 50 (GB.42) | ||
| Fracture | 50 (GB.48) | ||
| Lightning impulse withstand voltage | To earth | KV | 95 (GB.75) |
| Phase to phase | 95 (GB.75) | ||
| Fracture | 110 (GB.84) | ||
| Insulation resistance | To earth | 2000 | |
| Phase to phase | 2000 | ||
| Fracture | 2000 | ||
| Main loop resistance per phase | μΩ | ≤500 | |
| Working life under rated current | Times | 10000 | |
| Weight | KG | 185 | |
| Three phase contact closing and opening non-synchronism | ms | ≤2 | |
| Contact closing bounce time | ms | ≤5 | |
| Closing time | ms | 120-180 | |
| Opening time | ms | 500-900 | |
| Contact travel | mm | 8-9 | |
| Contact over-travel | mm | 2.5-4 | |
| Isolating gap open distance | mm | 25-30 | |
| Isolation gap over line distance | mm | 6-13 | |
| SF6 Leakage per year | ＜1% | ||
| SF6 Gas moisture content | PPm | ＜2 | |
| Standard | IEC265-1 | ||
Outline & Mounting Dimensions
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