Page 28 - 常州阿斯博开关有限公司

MVG-12S 型侧装式高压真空断路器

Type Side-Mounted High Voltage Vacuum Circuit Breaker

主要技术参数 MVG-12S（套筒式）
Main Technical Parameters 侧装式真空断路器外形尺寸

项 目 Item 单位 Unit 技术数据 Technical data Outline Dimension of Side-Mounted Vacuum Circuit Breaker
额定电压 Rated voltage kV 12
额定绝缘水平 额定短时工频耐受电压（1min） kV 42
Rated power-frequency short-duration withstand voltage(1min)
Rated insulation
level 额定雷电冲击耐受电压（峰值） kV 75
Rated lightning impulse withstand voltage (peak value)
额定频率 Rated frequency Hz 50
630 630 1250
额定电流 Rated current A
1250 1250
额定短路开断电流 Rated short-circuit breaking current kA 20 25 31.5
额定短时耐受电流 Rated short-time withstand current kA 20 25 31.5

额定峰值耐受电流 Rated peak withstand current kA 50 63 80
额定短路关合电流（峰值）Rated short-circuit making current (peak value) kA 50 63 80
4s热稳定电流 4s thermal stability current kA 20 25 31.5
额定动稳定电流 Rated dynamic current kA 50 63 80
额定电容器组关合涌流 Rated capacitor bank inrush making current kA 12.5 ( 频率不大于1000Hz/frequency not more than 1000Hz)
机械寿命 Mechanical life 次 20000
额定单个/背对背电容器组开断电流 A 630 / 400
Rated single/back-to-back capacitor bank breaking current
额定短路持续时间 Rated duration of short-circuit S 4
二次回路工频耐受电压 V 2000
Power-frequency withstand voltage of secondary circuit
合闸线圈 Closing coil V AC110 / 220 DC110 / 220

额定操作电压
Rated operational 分闸线圈 Opening coil V AC110 / 220 DC110 / 220
voltage
储能电机 Energy-storage motor V AC110 / 220 DC110 / 220
分闸时间（额定电压） Opening time (rated voltage) ms 20～50
合闸时间（额定电压） Closing time (rated voltage) ms 30～70
动、静触头允许磨损累计厚度 mm 3
Permit abrasion total thickness of dynamic and static contacts
储能时间 Energy storage time S ≤15
触头开距 套筒式 Sleeve Type 11±1
Clearance between mm
open contacts 固封式 Solid sealing 9±1
接触行程 Contacting travel mm 3～4
触头合闸弹跳时间 Jump time of contact close brake ms ≤2
三相分、合闸不同期性 Three-phase opening, closing non-synchronism ms ≤2
1
平均分闸速度 Average opening speed 1 m/s 0.9～1.3
2
平均合闸速度 Average closing speed 2 m/s 0.5～0.9

触头分闸反弹幅值 Contact opening rebound amplitude mm ≤3
主导电回路电阻 ≤45（630A)
Main galvanic circle resistance uΩ ≤40（1250A)
触头合闸接触压力 N 3100±200(31.5kV) 额定电流 (A) 额定短路开断电流 (kA) 机箱柜宽 (mm)
Contact closing rebound amplitude Rated current Rated short-circuit breaking current Enclosure width

额定操作顺序 Rated operating sequence 分Opening -0.3s- 合分 Closing opening -180s -合分 Closing opening 630～1250 20...31.5 240
MVG-12S 1. 平均分闸速度是指断路器触头刚分后6mm的平均速度； 主回路采用套筒式 MVG-12S
The average opening speed refers to the average speed of 6mm after the circuit breaker contact is just opened;
Main circuit is of sleeve type
2. 平均合闸速度是指断路器触头全开距平均速度。
The average closing speed refers to full clearance average speed of the circuit breaker contact.
26 27