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型高压真空断路器
MVG-40.5 Type High Voltage Vacuum Circuit Breaker

主要技术参数
Main Technical Parameters

项 目 Item 单位 Unit 技术数据 Technical data 储能电机技术参数
额定电压 Rated voltage kV 40.5 Energy Storing Motor
额定短时工频耐受电压（1min） kV 95
额定绝缘水平 Rated power-frequency short-duration withstand voltage (1min)
Rated insulation level 额定雷电冲击耐受电压（峰值） kV 185 型号 额定电压（V） 额定输入功率（W） 正常工作电压范围 额定电压下的储能时间（S）
Rated lightning impulse withstand voltage (peak value) The range of normal Energy storage time
Model Rated voltage Rated power input working voltage under rated voltage
额定频率 Rated frequency Hz 50
DC110V
630 630 1250 ZYJ55-1 100 85%～110% 额定电压 ≤ 15
1250 1250 1600 DC220V 85%～110%Rated voltage
额定电流 Rated current A 2000
2500
3150
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
合、分闸电磁铁及相关电气元件技术参数

额定峰值耐受电流 Rated peak withstand current kA 50 63 80
Technical Parameters of the Closing and Opening Elecromagnet and Related Components
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 类别 Category 合闸电磁铁 分闸电磁铁 闭锁电磁铁 防跳继电器

额定短路关合电流（峰值）Rated short-circuit making current (peak value) kA 50 63 80 项目 Item Closing electromagnet Opening electromagnet Latching electromagnet Anti-trip relay
额定短路持续时间 Rated duration of short-circuit S 4 额定工作电压 (V) DC220 DC110 DC220 DC110 DC220 DC110 DC220 DC110
机械寿命 Mechanical life 次 10000 Rated operational voltage
额定工作电流 (A)
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 current 1.3 2.6 1.3 2.6 25 mA 9.1 mA
额定单个/背对背电容器组开断电流 A 630 / 400 额定电功率 (W)
Rated single/back-to-back capacitor bank breaking current Electrical rating 288 288 288 288 2.7 1.0
短路开断电流开断次数 Breaking times of short-circuit breaking current 次 20 正常工作电压范围 85%～110%额定电压 65%～120%额定电压低于30%
二次回路工频耐受电压 V 2000 The range of normal 85%～110% rated voltage 额定电压时，开关不能分闸
Power-frequency withstand voltage of secondary circuit working voltage When the 65%～120% rated voltage － －
额定操作电压 Rated operational voltage V AC110 / 220 DC110 / 220 is less than 30% rated voltage,
the switch cannot be opened.
额定操作顺序 Rated operating sequence O-0.3s-CO-180s-CO
储能时间 Energy storage time s ≤15
触头开距 Clearance between open contacts mm 20±2
接触行程 Contacting travel mm 6±1
相间中心距 Phases center distance mm 300±1.5 / 280±1.5 二次控制回路方案组合
触头合闸弹跳时间 Jump time of contact close brake ms ≤ 3 Scheme of the Double-control Circuit
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 1.4 ～ 2.0 欠压脱扣方案
2
平均合闸速度 Average closing speed 2 m/s 0.6 ～ 1.3 控制电压 闭锁方案 防跳方案 Undervoltage 过流脱扣方案
Control voltage Blocking scheme Anti-trip scheme Overcurrent tripping scheme
合闸时间 Closing time ms 30～70 tripping scheme
分闸时间 Opening time ms 20～45 过流脱扣器数量 动作电流值
AC 220V Quantity of Action current value

触头分闸反弹幅值 Contact opening rebound amplitude mm ≤ 3 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
动、静触头允许磨损累计厚度 mm 3 blocking tripper tripper 2过流 / 3过流
Permit abrasion total thickness of dynamic and static contacts DC 220V 2 overcurrent / 3.5 / 5 / 7.5 / 10
2000A及以下 3 overcurrent
≤ 75
主导电回路电阻 μΩ 2000A and below AC 110V 不带电气闭锁 不带防跳继电器 不带欠压脱扣
Main galvanic circle resistance 2500A及以上 Without electric Without anti-trip relay Without undervoltage 不带过流脱扣器
≤ 50 Without overcurrent tripper
2500A and above DC 110V blocking tripper
1. 平均分闸速度是指断路器触头刚分后12mm的平均速度；
MVG- 40.5 2. 平均合闸速度是指断路器触头合前12mm的平均速度。 MVG- 40.5
The average opening speed refers to the average speed of 12mm after the circuit breaker contact is just opened;
The average closing speed refers to average speed of 12mm before the circuit breaker contact is closed.
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