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Outdoor high voltage AC SF6 circuit breaker
LW36-126 户外高压交流六氟化硫断路器

主要技术参数 /The main technical parameters

项目 project 单位 unit 参数 parameter
额定电压 Rated voltage kV 126

额定工频耐电压 对地 To the ground K•230
Rated power frequency withstand voltage
断口间 Fracture room K•265
额定雷电冲击耐受电压 对地 To the ground kV K•550
Rated lightning impulse withstand voltage
断口间 Fracture room K•630
SF6 气体零售表压时的工频耐受电压 (5min) K•95
Power frequency withstand voltage of SF6 gas retail gauge (5min)

额定频率 Rated frequency Hz 50
额定电流 Rated current A 3150
首开级系数 First opening factor 1.5
额定短路开断电流 Rated short-circuit breaking current kA 40
额定短路关合电流 ( 峰值 )Rated short circuit closing current (peak) 100
额定短路耐受电流 Rated short-circuit withstand current kA 40
额定峰值耐受电流 Rated peak withstand current 100

额定短路持续时间 Rated short circuit duration s 4
额定失步开断电流 Rated out-of-step breaking current kA 10
近区故障开断电流 Near-field fault breaking current kA 90%IK,75%IK
额定线路充电开合电流 Rated line charging and closing current A 31.5
额定操作顺序 Rated operation sequence O-0.3s-CO-180s-CO
主回路电阻 Main loop resistance μΩ ≤ 40
额定六氟化硫气体压 (20℃表压 ) Mpa 0.6
Rated sulfur hexafluoride gas pressure (20℃ gauge)
报警／最低功能压力 (20℃表压 ) Mpa 0.55±0.03/0.50±0.03
Alarm / minimum function pressure (20℃ gauge)
Sf6 气体年漏气率 Sf6 gas annual air leak rate 〈0.5%

气体水分含量 (V/V)Gas moisture content (V/V) ≤ 150×10-6
机械寿命 Mechanical life 次 10000
无线电干扰电平 Radio interference level μV ≤ 500
断口间 Fracture room 3906/3150
爬电距离 Creepage distance mm
对地 To the ground 3906/3150
每台充入 SF6 气体质量 Each is filled with SF6 gas quality kg 10
每台断路器质量 Quality of each circuit breaker kg 1500

注：外绝缘按海拔修正系数 K 进行修正：海拔每 2000m，K-1.13；海拔 3000m，K=1.28
Note: The external insulation is corrected according to the altitude correction coefficient K: altitude is 2000-1, K-1.13; altitude is 3000m, K=1.28

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