文件编号
Doc.No.
NDT2920002
版次
Edition
第
5
版
Version5
实施日期
Implementation date
20181213
9
capacity
使用类别 Utilization category
B
B
B
短时耐受电流 (kA /1s) I
cw
Short-time withstand current
5
8
10
操作性能寿命
(次)
Operational
performance life
(times)
电气寿命
Electrical
life
7500
7500
7500
机械寿命
Mechanical
life
10000
10000
10000
飞弧距离 (mm)
Flashover distance
≤100
≤100
≤100
表 2(续):NDM3E 主要技术参数
Table 2 (continued): Main technical parameters of NDM3E
型号、规格
Model and specification
NDM3E-1250
NDM3E-1600
极数 Number of poles
3
3
4
电气性能符合标准
Applicable standard to electrical performances
GB/T14048.2
壳架额定电流(A) I
n
Frame size rated current
1250
1600
额定绝缘电压(V) U
i
Rated insulation voltage
1000
1000
额定冲击耐压(kV) U
imp
Rated impulse withstand voltage
8
8
额定工作电压(V) U
e
AC50/60Hz
Rated working voltage
380/400/415
380/400/415
500
660/690
660/690
分断能力
Breaking capacity
M
H
M
H
额定极限分断能力(kA) I
cu
AC380/400/415V
Rated ultimate breaking capacity
50
80
50
70
额定极限分断能力(kA) I
cu
AC500V
Rated ultimate breaking capacity
/
/
/
50
额定极限分断能力(kA) I
cu
AC660/690V
Rated ultimate breaking capacity
/
20
/
20