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文件编号

Doc. No.

NDT2920257

版次

Edition

2

Version 2

实施日期

Implementation date

2019-08-19

7

Isd/I

2

×Tsd

当故障电流

Ii

I

1.5×Isd

时,反时限保护转为定时限保护,即

tsd=Tsd

 

When  fault  current  is  Ii

I

1.5× Isd  ,  inverse  time-delay  convert  to  definite  time-delay  protection, 

tsd=Tsd.
3.2.2.6

短路瞬时保护

  Short-circuit instantaneous protection.  

a

)短路瞬动保护整定电流

Ii

,容许偏差±

15%;

a) Setting current of short-circuit instantaneous Ii

Allowable deviation is±15%;

b

)短路瞬动保护动作时间

Ti

50ms

b) Action time Ti of Short-circuit instantaneous protection is

50ms.

3.2.2.7

热记忆保护保护

  Thermal memory protection  

热记忆保护功能维持时间

Tthm=1200s

Thermal memory protection hold time Tthm is 1200s.

4.

工作环境

Working Environment

4.1 

存放的环境条件见下表

3

Storage condition is shown as follow Table 3:

3

存放环境条件表

Table 3 Storage condition

项目

Item

规范

Specifications

周围温度

Ambient temperature

-40

 

  +75

相对湿度

Relative humidity

(环境温度

25

℃时)≤

95%

  (when ambient temperature 

is 25

)

95%

4.2 

使用环境

Service environment

1

)不要安装于含有爆炸气体的环境里,否则有引发爆炸的危险;

(1) Do not install the breaker in explosive environment, or hazard of explosion will be resulted

     

2

)请勿安装于特别潮湿的地方;

 

(2) Do not install the breaker in extremely humid locations

3

)不要安装在外磁场大于地磁场

5

倍的地方,否则断路器不能正常工作;

(3) Do not install the breaker in places where external magnetic field is more than 5 times of 

the geomagnetic field, or the breaker cannot work normally

4

)不要安装在振动大于

10m/s

2

的地方;

(4) Do not install the breaker in places with vibration more than 10m/s

2

5

)不要安装在气体介质能腐蚀金属和破坏绝缘的地方。

(5) Do not install the breaker in places with gaseous medium corrosive to metal and aggressive 

2019.12.31

文件控制

Summary of Contents for NDM3EU-400

Page 1: ...ons Doc Code NDT2920257 Edition 1 Version 1 Product Model and Name NDM3EU 400 NDM3EU 400 MCCB Implementation Date 2019 08 19 Shanghai Nader Electrical Co Ltd NDM3EU 400 NDM3EU 400 Electronic MCCB Oper...

Page 2: ...19 1 Contents 2 Application Scope and Purpose 2 Description of Model 3 Technical Parameters 7 Working Environment 8 Dimensions and Installation Dimensions 9 Installation 10 Accessories 11 Operation a...

Page 3: ...and instantaneous short circuit the breaker can protect the circuit and electric power unit from being damaged 2 Description of model 1 Description of model is shown as follow Table 1 1 Table 1 Descri...

Page 4: ...and Bottom Horizontal Z2H4 Plug in Rear Connection Top Horizontal and Bottom Vertical 12 Ir A Setting current Ir A AC 250 AC 300 AC 350 AC400 AC 250 AC 300 AC 350 AC 400 13 Certification code U UL489...

Page 5: ...UPS working environment by customer Pollution class 3 Protection class IP20 Circuit breaker UL489 Certification Lug UL486E Accessories Terminal cover Double Auxiliary Contacts Shunt Trip Plug in Pre...

Page 6: ...rating Suitable combinations of current and time are adjusted by this knob so as to protect circuits and devices This operation should be done by specialized technical personnel 1 Tr Ir 2 Ir 400A Tr...

Page 7: ...lay a Ir 3 a Setting current Ir of overload long delay Allowable deviation is 3 b Tr 10 b Setting time Tr of overload long delay Accuracy of action time is 10 c I 1 15 Ir tr 2 Ir I 2 Tr c When actual...

Page 8: ...ing Environment 4 1 3 Storage condition is shown as follow Table 3 3 Table 3 Storage condition Item Specifications Ambient temperature 40 75 Relative humidity 25 95 when ambient temperature is 25 95 4...

Page 9: ...eed 50 at 40 the lowest temperature in the most humid month should not exceed 25 and the highest humidity in this month should not exceed 90 while condensation on breaker surface caused by temperature...

Page 10: ...low Table 6 6 Table 6 Installation dimensions Installation dimension Model L mm W mm H mm Y mm X mm mm Circuit breaker 277 150 123 204 48 6 Circuit breaker Plug in 357 150 155 158 70 6 2 6 Installatio...

Page 11: ...to test shunt release in the main circuit 4 12M 4 Insulation resistance should not be lower than 12M 6 2 Mounting method 3 4 Please install the breaker on flame retardants such as metal etc It can be...

Page 12: ...ram of shunt release is shown as follow Fig 5 5 Fig 5 Wiring diagram of shunt release 7 2 Auxiliary contact 7 3 Peripheral control circuits of connection of auxiliary contacts 8 Technical Data of auxi...

Page 13: ...at no short circuit or short to ground occurs between terminals of opposite polarity or exposes live parts 3 3 Check that terminal connection and fixing bolts are fastened without looseness 8 2 Commis...

Page 14: ...cludes following procedures 1 5 1 Re trip the breaker close and open the breaker use trip button to trip the breaker when it is closed repeat for 5 times to check that the breaker can reliably re trip...

Page 15: ...breaker with wet hands or electric shock would be resulted 2 2 Frequent operation will shorten service life of the breaker This product is manufactured in a sophisticated quality management system In...

Page 16: ...er can functions normally or the breaker will be replaced with a charge 10 Ordering Instruction 10 1 10 1 Customer should confirm that he or she is familiar with technical files of this product and pl...

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