Characteristics of Structure
The circuit breaker features a sealed SF6 gas insulation structure with strong arc-extinguishing capability and high dielectric strength. Its robust outdoor design offers excellent resistance to harsh environmental conditions such as moisture, dust, and temperature variations. The compact and modular construction ensures easy installation, reliable operation, and low maintenance.
Applications
1.High-Voltage Substations
2.Power Transmission Lines
3.Power Grid & Utility Projects
4.Industrial Power Systems
Technical data
Main technical data of breaker
| No. | Name | Unit | Value | |
| 1 | Rated voltage | 126 | ||
| 2 | Rated power frequency withstand voltage(1min) | To earth | kV | K·230 |
| Between interrupter | K·265 | |||
| 3 | Rated thunder impulse withstand voltage | To earth | K·550 | |
| Between interrupter | K·620 | |||
| 4 | SF6 gas zero table pressure power frequency voltage tolerance (5 min) | K·95 | ||
| 5 | Rated frequency | Hz | 50 | |
| 6 | Rated current | A | 3150 | |
| 7 | First open class coefficient | 1.5 | ||
| 8 | Rated short open circuit current | 40 | ||
| 9 | Rated short circuit close current (peak) | kA | 100 | |
| 10 | Rated short circuit current tolerance | 40 | ||
| 11 | Rated current peak tolerance | 100 | ||
| 12 | Rated short circuit duration | s | 4 | |
| 13 | Rated out-of-step open circuit current | KA | 10 | |
| 14 | Area near fault open circuit current | KA | 90%lk,70%lk | |
| 15 | Rated line open charging electric current | A | 31.5 | |
| 16 | Rated operating order | O-0.3s-CO-180s-CO | ||
| 17 | The main loop resistance | μΩ | ≤40 | |
| 18 | Rated six fluoride sulfur gases pressure (20°C table press) | Mpa | 0.6 | |
| 19 | The police,the lowest pressure function(20°C table press) | Mpa | 0.55±0.03/0.50±0.03 | |
| 20 | SF6 gas leakage rate in | <0.5% | ||
| 21 | Gas water content (V/V) | ≤150x0.000006 | ||
| 22 | Mechanical life | Times | 10000 | |
| 23 | Radio interference level | μV | ≤500 | |
| 24 | Creepage distance | Between interrupter | mm | 3906/3150 |
| To earth | 3906/3150 | |||
| 25 | Weight of the Sf6 | kg | 10 | |
| 30 | Weight of the circuit breaker | kg | 1500 | |
Main technical data of structure
| No. | Name | Unit | Value | |
| 1 | Auxiliary circuit voltage | V | DC220 or DC110 | |
| 2 | Points off coil voltage/current | V/A | DC110/4;DC220/2 | |
| 3 | Energy storage motor | Rated voltage | V | DC220、AC220/DC110、AC110 |
| Normal operating voltage range | V | 85%~110% | ||
| Power | W | 600 | ||
| 4 | Motor energy storage time | s | ≤15 | |
| 5 | Heater and lighting circuit voltage | V | AC220 | |
| 6 | Auxiliary switch the rated voltage | V | DC220、AC220 | |
| 7 | Auxiliary switch rated current | A | 10 | |
| 8 | Auxiliary switch pick up points | 10 normally open 10 NC | ||
| No. | Name | Unit | Value |
| 1 | Breaker pole center distance | mm | 1750 |
| 2 | Moving contact stroke | mm | 120 |
| 3 | Moving contact contact trip | mm | 25 |
| 4 | Circuit breakers and white operating rod travel(chord length) | mm | 110 |
| 5 | Opening speed | m/s | 4.2-5m/s |
| 6 | Closing speed | m/s | 2.2-3m/s |
| 7 | Opening time | ms | ≤40 |
| 8 | Closing time | ms | ≤100 |
| 9 | Breaking time | ms | ≤60 |
| 10 | Together -sub time | ms | ≤80 |
| 11 | Minutes-time together | ms | 300 |
| 12 | Three-phase sub-gate-term | ms | ≤2 |
| 13 | Three-phase switch on a different period | ms | ≤3 |
