Page 9 - 苏州施源特(中德合资)电气有限公司（低压）

SYTV3-12 高压真空断路器
High-voltage Vacuum Circuit Breaker

主要规格及技术参数 / Main specifications and technical parameters

断路器符合 GB1984-89《交流高压断路器》、JB3855-1996《3.6-40.5kV 户内交流高压真空断路器》、DL/T403-2000《12kV-40.5kV 高压真空断
路器订货技术条件》标准要求，并符合 IEC56(87 出版物 ) 的相关要求。
The circuit breaker meets the requirements of GB1984-89 "AC high voltage circuit breaker", JB3855-1996 "3.6-40.5kV indoor AC high voltage
vacuum circuit breaker", DL/T403-2000 "12kV-40.5kV high voltage vacuum circuit breaker ordering technical conditions" And comply with the
relevant requirements of IEC56 (87 publications).
项目/project 单位/unit 数值 /Numerical value
额定电压/Rated voltage 12
额定短路时工频耐受电压(1min) 42
Power frequency withstand voltage at rated short circuit (1min) kV
热定雷电冲击耐受电压（峰值） 75
Power frequency withstand voltage at rated short circuit (1min)
额定频率
Rated frequency Hz 50
630 1250 1250 1600
额定电流 A 630 1600 2000 2000 2500
Rated current 1250
2500 3150 3150 4000*
额定短路开断电流
Rated short-circuit breaking current 25 31.5 40
额定短时耐受电流 kA
Rated short-time withstand current 25 31.5 40
额定短路持续时间
Rated short circuit duration s 4
额定峰值耐受电流
Rated peak withstand current kA 63 80
额定短路关合电流 63 80
Rated short circuit closing current
二次回路工频耐受电压(1min) V 2000
Secondary circuit power frequency withstand voltage (1min)
而定单个/背对背电容器组开断电流 A 630/400(40kA为800/400)
The single/back-to-back capacitor bank breaking current
额定电容器组关合涌流
Rated capacitor bank kA 12.5(频率不大于1000Hz)
分闸时间（额定电压）
Opening time (rated voltage) 20-50
合闸时间（额定电压） ms
Closing time (rated voltage) 35-70
机械寿命
Mechanical life 20000
额定电流开断次数（电寿命）
Rated current breaking times (electrical life) 次 20000
额定短路电流开端次数 50(40kA为30)
Rated short circuit current start count
动、静触头允许磨损累计厚度
Dynamic and static contacts allow wear cumulative thickness mm 3
额定合闸操作电压
Rated closing operating voltage V AC110/220 DC110/220
额定分闸操作电压
Rated opening operating voltage
储能电机额定电压
Rated voltage of energy storage motor V AC110/220 DC110/220
储能电机额定功率
Energy storage motor rated power W 70(40kA 100)
储能时间/Energy storage time W ≤1 5
触头开距/Contact opening distance 1 1±1
mm
超行程/Overtravel 3.5±0.5
触头合闸弹跳时间/Contact closing bounce time ≤2(40kA≤3)
mm
三相分、合闸不同期性/Three-phase separation and closing ≤2
平均分闸速度（触头分开～6mm）
Average opening speed (contacts separated ~6mm) ms 0.9-1.2
平均合闸速度（6mm-触头闭合）
Average closing speed (6mm - contact closure) m/s 0.5-0.8
触头分闸反弹幅值 ≤3
Contact opening rebound amplitude mm
主导线回路电阻 ≤50(630A)≤45(1250A)
Main wire loop resistance μΩ ≤35(1600-2000A≤25(2500A以上)
触头合闸接触压力/ 2400±200(25KA)
Contact closing contact pressure N 3100±200(31.5kA)4250±250(40kA)
额定操作顺序
Rated operation sequence 分析0.3s-合分-180s-合分
注：4000A 需强制风冷
Note: 4000A requires forced air cooling
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