Shandong Deyuan Electric Power Technology Co.
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Pole Mounted Circuit Breaker
Pole mounted circuit breaker takes vacuum arc extinguishing and air insulation, able to carry, close and open load currents, overload currents and short-circuit currents in overhead distribution lines. The operating mechanism of the circuit breaker has electric spring and electric permanent magnet modes, and can be externally mounted with an error-proof interlocking function and an obvious disconnecting knife gate. The circuit breaker can be equipped with intelligent feeder terminal to realize the application of power distribution automation. It is suitable for contact point, section point, branch or user separate point of 10kV overhead distribution line.
Product Parameters
| serial number | Parameter name | unit (of measure) | parameter value | |
| 1 | switching structure | Transformer form | / | Outside the sealing pole |
| insulating material | / | Epoxy resin covered with silicone rubber or outdoor epoxy resin | ||
| 2 | Dielectric | / | atmosphere | |
| 3 | rated voltage | kV | 12 | |
| 4 | rated current | A | 630 | |
| 6 | Rated cable charging and breaking current | A | 25 | |
| 7 | Rated short-circuit breaking current | kA | 20 | |
| 8 | Temperature rise test current | / | 1.1Ir | |
| 9 | Rated frequency 1min withstand voltage | Relative to/between | kV | 42 |
| intermittent | kV | 48 | ||
| 10 | Rated lightning impulse withstand voltage (1.2/50s) peak value | Relative to/between | kV | 75 |
| intermittent | kV | 85 | ||
| 11 | Rated short-time withstand current and duration | kA/s | 20/3 | |
| 12 | Rated peak withstand current | kA | 50 | |
| 13 | Rated short-circuit breaking current | kA | 20 | |
| 14 | Rated short-circuit closing current | kA | 50 | |
| 15 | Main circuit resistance | μΩ | ≤70 | |
| 16 | mechanical stability | substandard | ≥10000 | |
| 17 | Minimum creepage distance for external insulation | mm | 372 | |
| 18 | Rated short-circuit breaking current breaking times | substandard | ≥ 30 times | |
| 19 | Closing and opening not synchronized | ms | ≤2 | |
| 20 | Contact closing bounce time | ms | ≤2 | |
| 21 | Partial discharge (1.1Ur) | pC | ≤20 | |
Core Function
- The circuit breaker adopts three-phase pillar structure, featuring stable and reliable opening and closing performance, no combustion and explosion hazards, maintenance-free, small volume, light weight and long service life. 2. The integrated fully-closed and s
- The integrated fully-closed and sealed pole, with good sealing performance, improves moisture-proof and condensation-proof performance, and is characterized by high and low temperature resistance, ultraviolet ray resistance, aging resistance, and better applicability to temperature and humidity.
- The operating mechanism adopts a miniaturized spring operating mechanism with low energy consumption; the mechanism adopts a direct-action transmission drive with fewer switching parts, and the operating mechanism is placed in a sealed mechanism box with strong anti-corrosion performance, which improves the reliability of the mechanism.
- Manual or electric operation and remote control operation can be adopted for opening and closing operation.
- The circuit breaker can be equipped with two-phase or three-phase CT, and metering CT and zero-sequence CT can be added according to customer requirements.
Application Scenario
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Installed in the 10kV agricultural network overhead line contact, segment, branch line, play a protective and control role.
