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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

8

to insulation.

6

)温度降容。

(6) Temperature de-rating.

断路器安装场所的环境要求如下表

4

Environmental requirements for installation location of breaker are shown as follow Table 4:

4

断路器安装场所的环境要求

Table 4 Environmental requirements for installation location of breaker

项目

Item

规范

Specifications

周围空气温度

Ambient air 

temperature

-35

 

  +70

相对湿度

Relative 

humidity

(

+40

℃时

)

不超过

50%

,最低温度湿月最不超过

+25

℃,且该月平均最大相

对湿度不超过

90%,

并考虑因温度变化发生在产品表面上的凝露。

The relative humidity of the air does not exceed 50% (at +40

), the lowest 

temperature in the most humid month should not 25

, and the 

highest humidity in this month should not exceed 90% while condensation 

on breaker surface caused by temperature change should be taken into 

consideration.

海拔高度

Altitude

不超过

2000m

Lower than 2000m

污染等级

Pollution 

degree

3

Level 3

温度降容系数见下表

5

Temperature de-rating coefficient is shown as follow Table 5:

5

温度降容系数

Table 5 Temperature de-rating coefficient 

温度

Temperature

+40℃

+45℃

+50℃

+55℃

+60℃

+65℃

+70℃

降容系数

De-rating

Coefficient

1

1

1

0.978

0.957

0.934

0.911

注:当使用环境温度低于

40

时,产品可正常使用,不存在降容。

Notes

When ambient temperature is less than 40

, breaker can be used normally without any 

de-rating.

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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