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MVG2-12 型高压真空断路器

Type High Voltage Vacuum Circuit Breaker

MVG2

固封式高压真空断路器 主要技术参数

Enclosed Type HV Vacuum Circuit Breaker Main Technical Parameters
储能电机技术参数
项 目 Item 单位 Unit 技术数据 Technical data
额定电压 Rated voltage kV 12 Energy Storing Motor
额定短时工频耐受电压（1min） kV 42
额定绝缘水平 Rated power-frequency short-duration withstand voltage(1min) 正常工作电压范围 额定电压下的储能时间（S）
Rated insulation level 额定雷电冲击耐受电压（峰值） kV 75 型号 额定电压（V） 额定输入功率（W）
Rated lightning impulse withstand voltage (peak value) Model Rated voltage Rated power input The range of normal Energy storage time
额定频率 Rated frequency Hz 50 working voltage under rated voltage
630 630 1250 1250 DC110V 85%～110% 额定电压
1250 1250 1600 1600 ZYJ55-1 DC220V 70 , 100 85%～110%Rated voltage ≤ 15
2000 2000
额定电流 Rated current A
2500 2500
3150 3150 3150
4000 4000 4000
额定短路开断电流 Rated short-circuit breaking current kA 20 25 31.5 40 50 合、分闸电磁铁及相关电气元件技术参数
额定短时耐受电流 Rated short-time withstand current kA 20 25 31.5 40 50 Technical Parameters of the Closing and Opening Elecromagnet and Related Components

额定峰值耐受电流 Rated peak withstand current kA 50 63 80 100 125
额定短路关合电流（峰值）Rated short-circuit making current (peak value) kA 50 63 80 100 125 类别 Category 合闸电磁铁 分闸电磁铁 闭锁电磁铁 防跳继电器

4s热稳定电流 4s thermal stability current kA 20 25 31.5 40 50
项目 Item Closing electromagnet Opening electromagnet Latching electromagnet Anti-trip relay
额定动稳定电流 Rated dynamic current kA 50 63 80 100 125
额定工作电压 (V)
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) Rated operational voltage DC220 DC110 DC220 DC110 DC220 DC110 DC220 DC110
额定单个/背对背电容器组开断电流 A 630 / 400 额定工作电流 (A)
Rated single/back-to-back capacitor bank breaking current Rated operational current 1.1 2.2 1.1 2.2 25 mA 9.1 mA
额定短路持续时间 Rated duration of short-circuit S 4 额定电功率 (W)
二次回路工频耐受电压 Power-frequency withstand voltage of secondary circuit V 2000 Electrical rating 242 242 242 242 2.7 1.0

额定操作电压 合闸线圈 Closing coil V AC 110 / 220 DC 110 / 220 正常工作电压范围 85%～110%额定电压 65%～120%额定电压低于30%
Rated operational 分闸线圈 Opening coil V AC 110 / 220 DC 110 / 220 The range of normal 85%～110% rated voltage 额定电压时，开关不能分闸
voltage 储能电机 Energy-storage motor V AC 110 / 220 DC 110 / 220 working voltage When the 65%～120% rated voltage － －
is less than 30% rated voltage,
分闸时间（额定电压） Opening time (rated voltage) ms 20～50 the switch cannot be opened.
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 二次控制回路方案组合
触头开距 Clearance between open contacts mm 9± 1
Scheme of the Double-control Circuit
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 控制电压 闭锁方案 防跳方案 欠压脱扣方案 过流脱扣方案
1 Undervoltage
平均分闸速度 Average opening speed 1 m/s 0.9 ～1.3 Control voltage Blocking scheme Anti-trip scheme tripping scheme Overcurrent tripping scheme
2
平均合闸速度 Average closing speed 2 m/s 0.4～1.0
触头分闸反弹幅值 Contact opening rebound amplitude mm ≤ 2 过流脱扣器数量 动作电流值

AC 220V Quantity of Action current value
≤ 55 (630A) 带电气闭锁 带防跳继电器 带欠压脱扣 带过流脱扣器 overcurrent trippers
With electric With anti-trip relay With undervoltage With overcurrent
主导电回路电阻 μΩ ≤ 45 (1250A) blocking tripper tripper 2过流 / 3过流
Main galvanic circle resistance ≤ 35 (1600A～2000A) DC 220V 2 overcurrent / 3.5 / 5 / 7.5 / 10
3 overcurrent
≤ 25 (2500A以上 / above 2500A)
AC 110V 不带电气闭锁 不带防跳继电器 不带欠压脱扣
不带过流脱扣器
2000±200 (20kA) Without electric Without anti-trip relay Without undervoltage Without overcurrent tripper
触头合闸接触压力 N 2400±200 (25kA) DC 110V blocking tripper
Contact closing rebound amplitude 3100±200 (31.5kA)
4750±200 (40kA)
3
额定操作顺序 Rated operating sequence 3 分 Opening -θ- 合分 Closing opening -180s -合分 Closing opening
50000 (31.5kA及以下 / 31.5kA and below)
机械寿命 Mechanical life 次 20000 (40kA及以上 / 40kA and above)
MVG2-12 1. 平均分闸速度是指断路器触头刚分后6mm的平均速度； MVG2-12
The average opening speed refers to the average speed of 6mm after the circuit breaker contact is just opened;
2. 平均合闸速度是指断路器触头全开距平均速度；
12 The average closing speed refers to full clearance average speed of the circuit breaker contact; 13
3. 当额定短路开断电流＜40kA时，θ=0.3s；当额定短路开断电流≥40kA时，θ=180s。
When the rated short-circuit breaking current is <40kA, θ =0.3s, when the rated short-circuit breaking current is ≥40kA,θ =180s.