安装方式/ Mounting Method - nader NDM2L Series Product Manual

安装板开孔 Holing installation panel
板前接线(X-X、Y-Y 为三极断路器中心) Front-panel wire(X-X, Y-Y is the centre of three-pole
breaker)
Table 9 External dimensions and installation dimensions
型号 Type
安装板开孔尺寸
（mm）
Holing size of installation panel
注：未注公差尺寸的极限偏差按 GB/T 1804-m。
Note: The limit deviation not indicated with the tolerance dimensions is as per GB/T 1804-m.
7. 安装方式/ Mounting Method
7.1 绝缘测试 Insulation test
本断路器出厂前已按标准规定绝缘测试。因断路器带有电子线路板，安装前如进行复测，必须按如下
步骤：
The breaker has gone through specified standard insulation test before factory delivery. Because many PCBs
are installed in the breaker, for re-testing, please conduct tests according to following procedures:
（1）用 500VDC 兆欧表。Use a 500VDC megameter.
（2）在断路器处于断开状态，对进出连接板 1-2 、3-4 、5-6 之间，和 1 、3 、5 连接板（3 个连
接板用导线相连）与外壳之间（外壳用金属箔覆盖）分别进行。Place the breaker in open status, carry out test
between 1-2, 3-4 and 5-6 connection boards, as well as between the 1, 3 and 5 connection boards (connected with
wires) and the breaker shell (covered by metal foil).
（3）对接至主电路的欠电压脱扣器，在进线与断路器外壳间。Test should be done in position between
incoming wire and breaker shell to test undervoltage release in the main circuit.
（4）绝缘电阻不小于 20 MΩ。Insulation resistance should not be lower than 20MΩ.
注: 也可分离电子线路板后进行绝缘测试。
Notes: Insulation test can also be done after separation of PCBs.
地址：上海市浦东新区申江南路 2000 号
文件编号：NDT2920129
表 9 外形尺寸与安装尺寸
NDM2L-125
A 60
B 129
C 4.5
邮编：201315
第 12 页 共 20 页
NDM2L-250 NDM2L-400
70
126
4.5
电话：(021)68586699
文件版本：2
NDM2L-630
94 140
194 243
7 7
传真：(021)23025796