文件编号
Doc.No.
NDT2920002
版次
Edition
第
5
版
Version5
实施日期
Implementation date
20181213
38
User should use internal and external accessories provided by Nader so as to endure their
quality; Nader should not be held reliable for purchase of accessories from other companies or
authorized modifications.
在执行维护操作前，必须先完成下列操作：
Follow following steps before conducting maintenance:
（1）使断路器分闸；
Open the breaker;
（2）断开电源与断路器的连接（包括主电路、辅助电路）；
Disconnect power supply and breaker (including main circuit and auxiliary circuits)
（3）将断路器从安装位置上卸下（一般用于插入式，固定式最好也如此）
Remove the breaker from its installation position (normally for plug-in installation; it is
recommended to
do so for a fixing one).
断路器维护在正常操作条件下每年一次，在非正常条件下每半年一次，以下为维护内容：
Maintenance of breaker is carried out yearly under normal use and every six months under
abnormal use. The maintenance includes following procedures:
（1）再扣断路器，合、分断路器，在断路器合闸时用脱扣按钮使断路器脱扣，往复操作 5 次，断路器
应能可靠进行再扣、合、分、脱扣动作；
（2）清除断路器表面及连接处的灰尘（用清洁、干燥的抹布擦拭）；
（3）清洁隔弧板，如必要则需要更换隔弧板；
（4）绝缘测试（见 7.1）
（5）检查所有连接情况，用砂布擦除氧化物，用可溶解剂清洁，拧紧螺栓和螺母；
（6）控制器整定值测试：应使用我公司的 NDM3E 专用测试仪器与断路器的 TEST 端口连接，检验各
个设定参数，以保证参数设定与旋钮指示一致；
（7）如果断路器还装有其它内、外部附件，应逐一检查各个附件，以确保其处于正常工作状态。
（按照 8 附件说明 详细内容进行测试）
(1)
Re-trip the breaker, close and open the breaker, use tripping button to trip the breaker when it is
closed;
repeat for 5 times to check that the breaker can reliably re-trip, open, close and trip.
(2)Clean dust on breaker surface and connections (wipe with clean and dry cloth).
(3)Clean the flash barrier; replace it if necessary.
(4)Carry out insulation test (see Section 7.1).
(5)Check condition of all connections. Wipe away oxidations with abrasive cloth and clean with
soluble agent
. Screw bolts and nuts tight.
(6)Test of controller setting values: use a tester specialized for NDM3E provided by Nader to
connect with TEST terminal of the breaker. Check setting of each parameter to ensure that
parameter setting is consistent with knob indication.
