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It can also be equipped with a special pushing mechanism to form a handcart unit for use.
The main circuit part can adopt an integral solid-sealed pole column to achieve miniaturization, high reliability, and maintenance-free operation of the circuit breaker.
It can be equipped with KYN series and other middle-mounted handcart-type switchgear cabinets.
The fixed type can also be used with HXGN fixed switchgear cabinets.
It can also be equipped with a special pushing mechanism to form a handcart unit for use.
The main circuit part can adopt an integral solid-sealed pole column to achieve miniaturization, high reliability, and maintenance-free operation of the circuit breaker.
It can be equipped with KYN series and other middle-mounted handcart-type switchgear cabinets.
The fixed type can also be used with HXGN fixed switchgear cabinets.
Enforce standars
GB1984-2003 High voltage AC circuit breaker
DL/T402-2007 High voltage AC circuit breaker ordering technical conditions
IEC60056 High voltage AC circuit breaker
Type description
Normal service condition
Ambient temperature: not higher than 40℃ and not lower than -10℃ (storage and transportation at -30℃ are allowed).
Altitude: not exceeding 1000m. (If a higher altitude is required, the rated insulation level should be correspondingly increased.)
Relative humidity: the daily average value is not greater than 95%, and the daily average value of the saturated vapor pressure is MPa, and the monthly average value is not greater than 1.8x10 square millimeters.
Seismic intensity: not exceeding magnitude 8.
Places without fire, explosion, severe pollution, chemical corrosion, and intense vibration.
Performance parameter
| Serialnumber | name | unit | data | ||||
| Rated voltage | kV | 12 | |||||
| 2 | Maximum operating voltage | kV | 12 | ||||
| 3 | Rated current | A | 6301250 | 63012501600200025003150 | 125016002000250031504000 | ||
| 4 | Rated short-circuit breaking current (rated thermal stable current-RMS) | kA | 20/25 | 31.5 | 40 | ||
| 5 | Rated short circuit closing current (peak) | kA | 50/63 | 80 | 100 | ||
| 6 | Rated peak withstand current (rated dynamic stable current -peak) | kA | 50/63 | 80 | 100 | ||
| 7 | 45 rated short-circuit withstand current | kA | 20/25 | 31.5 | 40 | ||
| 8 | Ratedmaximu | Working voltage (rated before and after breaking)/1minpower frequency voltage | Ground 42(fracture 48) | ||||
| mMarginaI level | Impulse withstand voltage (rated before and afterbreaking)/Peak rated lightning impulse withstand voltage | kV | Ground to ground 75(fracture 85) | ||||
| 9 | Rated thermal stability time | S | |||||
| 10 | Rated operating sequence | Minute -0.3S-combined minute-1805-combinedminute | |||||
| 11 | Mechanical life | time | 20000 | ||||
| 12 | Rated short circuit breaking current breaking times | time | 50 | ||||
| 13 | Rated closing voltage of operating mechanism (DC) | V | AC. DC 110,220 | ||||
| 14 | Rated switching voltage of operating mechanism (DC) | V | AC. DC 110,220 | ||||
| 15 | Contact opening distance | mm | 11±1 | ||||
| 16 | overtravel(contact spring compression length) | mm | 3.5±0.5 | ||||
| 17 | Three phase,closing bounce time | ms | s2 | ||||
| 18 | Contact closing bounce time | ms | ≤2 | ||||
| 19 | Average opening speed | m/s | 0.9-1.2 | ||||
| Average closing speed | m/s | 0.5-0.8 | |||||
| 20 | Opening time | At the highest operating voltage | S | ≤0.05 | |||
| 21 | At the lowest operating voltage | ≤0.08 | |||||
| 22 | Closing time | S | 0.1 | ||||
| 23 | Main circuit resistance of each phase | μQ | 630≤50 1250≤45 | ||||
| 24 | Allowable wear accumulation thickness of dynamic and static contacts | mm | 3 | ||||
| Rated current(A) | 630 | 1250 | Rated current (A) | 630 | 1250 |
| Rated short circuit breakingcurrent (kA) | 20,25,31.5 | 25.31.5 | Rated short circuit breakingcurrent (kA) | 20,25,31.5 | 25.31.5 |
| Fit static contact size(mm) | 035 | 049 | Fit static contact size(mm) | Ø35 | 049 |
| Interphase distance(mm) | 275±1.5 | Interphase distance(mm) | 275±1.5 | ||
