真空灭弧室固封极柱技术参数说明 Technical Specification of Embedded Pole
序号No.
主要技术参数 Main Technical Specification
Type型号
EP34-12/630-25A/R
EP34-12/1250-25A/R
EP34-12/1250-31.5A/R
EP34-12/1600-31.5A/R
电压参数 VOLTAGE RATINGS AT RATED CONTACT STROKE
1
额定频率(fr) Rated frequency (fr)
Hz
50/60
2
额定电压(Ur) Rated Voltage (Ur)
kV
12
3
短时（(1 min)工频耐受电压(Ud) Short-time(1 min) power-frequency withstand voltage (Ud)
kV
48
4
雷电冲击耐受电压(峰值) (UP) Lightning impulse withstand voltage(Peak) (UP)
kV
85
电流参数 CURRENT RATINGS
1
额定电流(Ir) Rated Current (Ir)
A
630
1250
1250
1600
2
额定短路开断电流（Isc） Rated short-circuit breaking Current （Isc）
kA
25
20
31.5
31.5
3
额定短路开断电流的直流分量 Percentage D.C component of rated S.C Breaking Current
%
40
4
额定短路开断电流开断次数 Breaking operations of rated short circuit breaking current
Times
30
或按照GB/T1984-2003和IEC 62271-100 E2级执行 Or afford with E2 class GB/T1984-2003 and IEC 62271-100
5
额定短时耐受电流(Ik) Rated short-time withstand current(Ik)
kA
25
20
31.5
31.5
6
额定短路持续时间(tk) Rated duration of short-circuit(tk)
s
4
7
额定峰值耐受电流(Ip) Rated peak withstand current(Ip)
kA
63
63
80
80
8
额定短路关合电流 Rated short-circuit making Current
kA
63
63
80
80
9
额定电缆充电开断电流 Rated cable-charging breaking current
A
25
10
额定触头压力下限时的回路电阻 Circuit resistance at lowest rated contact force
??
≤25
≤23
≤23
≤23
11
额定操作顺序 Rated operating sequence
O-0.3s-CO-180s-CO
12
局部放电限定值（试验电压为1.1 Ur） Local discharge limit value（the test voltage is 1.1Ur）
pc
≤5
机械参数 MECHANICAL DATA
1
运动部分质量 Weight of movable parts
kg
1.1
2
触头自闭力 Closing force due to bellow and atmosphere
N
100±40
3
额定开距下的触头反力 Force required to hold contacts open at full stroke
N
200±60
4
额定触头压力 Rated added external contact final force
N
2500±200
2500±200
3100±200
3100±200
5
触头初压力 Added external contact force at contact touch point
1750±150
1750±150
2170±150
2170±150
对开关机械特性需求 MECHANICAL REQUIREMENTS
1
触头开距 Clearance between open contacts
mm
9±1
2
平均分闸速度（触头闭合位置～75%开距） Average opening speed(contact close position～75% contact gap)
m/s
1.2±0.2
3
平均合闸速度（30%开距～触头闭合位置） Average closing speed(30% contact gap～contact close position)
m/s
0.7±0.2
4
触头合闸弹跳时间 Contact bouncing duration at closing operation
ms
≤2
5
触头合闸和分闸不同期 Closing and Opening non-simultaneity of three-phase Contacts
ms
≤2
6
分闸触头反弹幅值 Maximum Rebound during opening
mm
≤2
≤1.5
7
超行程 Over-travel
mm
4±0.5
寿命 LIFE
1
储存时间 Storage life
years
202
机械寿命 Mechanical endurance
Times
30000
3
触头允许磨损厚度 Contacts limit erosion
mm
3