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MVG4-12 型高压真空断路器

Type High Voltage Vacuum Circuit Breaker

MVG4 MVG4

套筒式高压真空断路器（大电流手车式 相间距275）外形尺寸 套筒式高压真空断路器 主要技术参数
Outline Dimension of Sleeve Type HV Vacuum Circuit Breaker Sleeve Type HV Vacuum Circuit Breaker Main Technical Parameters
(High Current Handcart-Type, With a Phase Spacing of 275)
项 目 Item 单位 Unit 技术数据 Technical data
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 1250
1250 1250 1600 1600
2000 2000
额定电流 Rated current A
2500 2500 3150
3150 3150 4000
4000 4000 5000
额定短路开断电流 Rated short-circuit breaking current kA 20 25 31.5 40 50
额定短时耐受电流 Rated short-time withstand current kA 20 25 31.5 40 50

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
4s热稳定电流 4s thermal stability current kA 20 25 31.5 40 50
额定动稳定电流 Rated dynamic current kA 50 63 80 100 125
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)
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 AC 110 / 220 DC 110 / 220
额定操作电压
Rated operational 分闸线圈 Opening coil V AC 110 / 220 DC 110 / 220
voltage
储能电机 Energy-storage motor V AC 110 / 220 DC 110 / 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 Clearance between open contacts mm 11±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 0.4 ～ 0.8

触头分闸反弹幅值 Contact opening rebound amplitude mm ≤ 2
≤ 55 (630A)
主导电回路电阻 μΩ ≤ 45 (1250A)
Main galvanic circle resistance ≤ 35 (1600A～2000A)
≤ 25 (2500A以上 / above 2500A)
2000±200 (20kA)
额定电流 (A) 额定短路开断电流(kA) 配套柜宽 (mm) 动静触头 额定电流 (A) 梅花触头 静触头尺寸 触头合闸接触压力 2400±200 (25kA)
Rated current Rated short-circuit breaking current Supporting cabinet width 配合尺寸 Ratedcurrent Tulip contact Static contact dimension Contact closing rebound amplitude N 3100±200 (31.5kA)
Fit 1600～2000 CT-48 ф 79
dimension 4750±200 (40kA)
1600～4000 31.5...*50 1000 of dynamic 2500～3150 CT-64 额定操作顺序 Rated operating sequence 3 分 Opening -θ- 合分 Closing opening -180s -合分 Closing opening
3
and static ф109
contacts 4000～5000 CT-82 机械寿命 Mechanical life 次 50000 (31.5kA及以下 / 31.5kA and below)
20000 (40kA及以上 / 40kA and above)
MVG4-12 1.主回路采用套筒式 50 1000 1. 平均分闸速度是指断路器触头刚分后6mm的平均速度; MVG4-12
*5000
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;
20 2.*此规格为特殊型号，订货前请与本司技术人员联系 The average closing speed refers to full clearance average speed of the circuit breaker contact; 21
*This specification is the special model, please contact our technical personnel before placing orders 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.