| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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Outdoor live tank AC High-Voltage SF6(SF6) circuit breaker (hereinafter referred to as "circuit breaker") is an outdoor high-voltage distribution switchgear with three-phase AC 50Hz and rated voltage of 40.5kV. It can be used to open and close rated current and fault current, switch on and off capacitor banks, and switch lines. It is especially suitable for frequent operation and can also be used as a contact circuit breaker
Ambient temperature: maximum temperature +40ºC; Minimum temperature -30ºC.
Relative humidity: daily average relative humidity ≤90%; Monthly average relative humidity ≤95%.
Altitude: the altitude under normal use conditions does not exceed 1000m(plain type); Special use conditions altitude does not exceed 3000m(referred to as plateau type);
Wind speed not exceeding 34m/s(corresponding to 700Pa on the surface of the cylinder);
The seismic intensity does not exceed 8 degrees (horizontal acceleration 0.25g, vertical acceleration 0.125g);
Air pollution level :IV; Minimum nominal creepage distance :31mm/kV.
The circuit breaker is a three-phase discrete porcelain column structure and adopts a pressurized gas interrupter. The three phases are fixed on a common frame, and the three phase gas is connected through a steel pipe.
The circuit breaker is composed of arc extinguisher chamber, porcelain sleeve of pillar, drive shaft, connecting rod, bottom frame and spring operating mechanism.
Excellent breaking performance, short arc burning time, rated short circuit breaking current up to 40kA.
Reliable insulation, high mechanical reliability, strong arc extinguishing ability, frequent operation.
Switching capacitor bank current 630A without reignition.
It can be equipped with 3 ~ l2 built-in current transformer, simple structure, small volume, long period without maintenance.
The bottom frame adopts the overall surface treatment technology, beautiful appearance and strong anti-corrosion ability.
| Mane | Unit | Data | |
| Rated frequency | Hz | 50 | |
| Rated voltage | kV | 40.5 | |
| Rated current | A | 1250/1600/2000 | |
| Rated Short-Circuit Breaking Current | kA | 31.5 | |
| Rated Short-Circuit Closing Current | 80 | ||
| Rated Short-Time Withstand Current | 31.5 | ||
| Rated Peak Withstand Current | 80 | ||
| Rated Out of Step Breaking Current | 10 | ||
| Rated Short-Circuit Continuous Time | S | 4 | |
| Rated Short-Circuit Breaking Current Breaking Times | Times | 10 | |
| Rated short-time power frequency withstand voltage | Interphase, to earth(dry) | kV/min | 95/1 |
| Fracture (dry) | 118/1 | ||
| Interphase, to earth(wet) | 80/1 | ||
| Auxiliary circuit to earth | 2/1 | ||
| Rated lightning impulse withstand voltage | Interphase, to earth | kV | 185 |
| Fracture | 215 | ||
| Rated Operating Voltage and Auxiliary Circuit Rated Voltage | V | AC220,DC220 | |
| Main Circuit Rsistance | Rated Current 1600A and below | micro-Ohm | Not more than 90 |
| Rated Current more than 1600A | Not more than 40 | ||
| Closing Time | Under AC Voltage | ms | Not more than 100 |
| Under DC Voltage | 55~100 | ||
| Opening Time | Under AC Voltage | Not more than 60 | |
| Under DC Voltage | 30~65 | ||
| Closing-Opening Time | Not less than 120 | ||
| Opening-Closing Time | Not more than 50 | ||
| Full Breaking Time | Not more than 78 | ||
| Rated Operating Order | 0-0.3s-C0-180s-CO | ||
| Moving Contact Travel | mm | 96±2.5 | |
| Contact Opening Distance | mm | 60±1.5 | |
| Closing buffer Stroke | mm | 10±2 | |
| Phase-to-Phase opening Synchronism | ms | Not more than 3 | |
| Phase-to-Phase closing Synchronism | ms | Not more than 3 | |
| Phase spacing | mm | 725 | |
| Annual Gas Leakage rate of SF6 | % | Not more than 0.5 | |
| SF6 Gas Moisture content (ppm, gauge pressure at 20 degrees Celcius) | Handover Acceptance Value | V/V | Not more than 150 |
| Distance Travel | Not more than 300 | ||
| SF6 Gas Rated Pressure (gauge pressure at 20°ºC) | MPa | 0.45 | |
| SF6 Gas Replenish Pressure (gauge pressure at 20°C) | 0.42 | ||
| SF6 Gas Locked Pressure (gauge pressure at 20ºC) | 0.4 | ||
| Mechanical Life | Times | 6000 | |
| SF6 Gas Weight | Kg | 5 | |
| Weight (with CT) | 800 | ||
| Weight (without CT) | 1000 | ||
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