看看这么选断路器对么？

小杆 · 发表于 2009-7-3 09:37

长延时设定值Ir = 1x0.9xIn=90A 在反时限曲线下在1.3Io=1.3x90=117下约16~20秒脱扣？？？
这什么意思，是两种情况考虑么？啥叫在反时限曲线下？是说断路器如有反时限特性就按后面的值选么？那117不还是大于断路器额定电流100了么？
长延时就选额定电流好么“

wlmkl · 发表于 2009-7-3 11:09

原帖由 CST1234 于 2009-7-3 01:27 发表
另外说句，你计算发电机开关的瞬动不能按照708所蓝皮书提到的公式去做。
他写的那是按照日本人推荐的老方法算的，不对的。

你要根据脱扣器实际能检测到的电流去计算。
当高直流分量一产生的时候，CT很快很饱和， ...

瞬动无用的情况下，上下级开关就靠能量脱扣或者可返回时间/全分断时间。能做到的没几个。
还有NS100-250的Icw全是编的，其源头我也在找，谁第一编出来的，现在居然都统一了。

孤单的瓶子 · 发表于 2009-7-3 12:27

你赶紧叫CST和吴孟达来扫盲吧
^_^
上面的类似反函数曲线的那一段是过载长延时特性，也叫反时限特性曲线
垂直下来到中间那个圈圈的算是短延时脱扣
最右边那段算是限流和能量脱扣部分。
老实说，我一直对施耐德的能量脱口抱有怀疑态度。整的挺玄乎的。

孤单的瓶子 · 发表于 2009-7-3 13:25

因为它涉及到双金属片热态和冷态动作时间是不一样的。
热态的话，相对来说动作时间要短。

孤单的瓶子 · 发表于 2009-7-3 13:44

也就是说，鼠笼式异步电机启动时，会产生一个启动电流，但是他有一个峰值电流，开关的瞬时动作值应该大于这个峰值，才能躲过启动电流，也就是说不要在电机启动过程中开关误动作。但是也要注意热继电器的脱扣级别，因为有些重载电机，启动时间过长，导致热继电器会动作。所以如果出现这种情况，应该选择20，或30级别的热继电器。热继电器脱口级别可以查找相关IEC标准，好像是在7.2Ir的时候，热继电器动作时间来定义的。平常用的都是10，10A的比较多。
你上面这个图已经是说明了这个问题。

孤单的瓶子 · 发表于 2009-7-3 13:44

也就是说，鼠笼式异步电机启动时，会产生一个启动电流，但是他有一个峰值电流，开关的瞬时动作值应该大于这个峰值，才能躲过启动电流，也就是说不要在电机启动过程中开关误动作。但是也要注意热继电器的脱扣级别，因为有些重载电机，启动时间过长，导致热继电器会动作。所以如果出现这种情况，应该选择20，或30级别的热继电器。热继电器脱口级别可以查找相关IEC标准，好像是在7.2Ir的时候，热继电器动作时间来定义的。平常用的都是10，10A的比较多。
你上面这个图已经是说明了这个问题。

柊镜 · 发表于 2009-7-3 16:00

哦，TCC图啊，船厂研究这个的少呢，iamsense研究的很深了
一般设计院和设备厂商做这个

柊镜 · 发表于 2009-7-3 16:06

IEC标准找的到的啊，我有，但不保证很全，要么？
----------------------------
IEC 60044-1 Instrument Transformers Part-1 Current Transformers
IEC 60071-1 Insulation Co-Ordination - Definitions, principles and rules
IEC 60071-2 Insulation Co-Ordination - Application guide
IEC 60071-4 Insulation Co-Ordination - Computational guide to insulation co-ordination and modell
IEC 60076-1 Power transformers - General
IEC 60076-10 Power transformers - Determination of sound levels
IEC 60076-2 Power transformers - Temperature rise
IEC 60076-3 Power transformers - Insulation levels, dielectric tests and external clearances in a
IEC 60076-4 Power transformers - Guide to the lightning impulse and switching impulse testing
IEC 60076-5 Power transformers - Ability to withstand short circuit
IEC 60076-8 Power transformers - Application guide
IEC 60079-1 Electrical apparatus for explosive gas atmospheres - Flameproof enclosures 'd'
IEC 60079-10 Electrical apparatus for explosive gas atmospheres - Classification of hazardous areas
IEC 60079-11 Electrical apparatus for explosive gas atmospheres - Intrinsic safety 'i'
IEC 60079-14 Electrical apparatus for explosive gas atmospheres - Electrical installations in hazardous areas
IEC 60079-15 Electrical apparatus for explosive gas atmospheres - Construction, test and marking of type of protection n electrical apparatus
IEC 60079-2 Electrical apparatus for explosive gas atmospheres - Pressurized enclosures 'p'P
IEC 60079-27 Fieldbus intrinsically safe concept (FISCO) and Fieldbus non-incendive concept (FNICO)
IEC 60079-4 Method of test for ignition temperature
IEC 60079-5 Electrical apparatus for explosive gas atmospheres - Powder Filling 'q'
IEC 60079-6 Electrical apparatus for explosive gas atmospheres - Oil-immersion 'o'
IEC 60079-7 Electrical apparatus for explosive gas atmospheres - Increased safety 'e'
IEC 60092_375 General Instrumentation, Control & Communication Cables
IEC 60092_376 Cable for Control & Instrumentation Circuits
IEC 60092-350 Elecetrical Installations in Ship
IEC 60092-352 Choice & Installation of Cables for Low Voltage Power Systems
IEC 60092-375 Ship board telecommunication cables and radio-frequency cables - General instrumentation, control and communication cables
IEC 60228 Conductors of Insluated Cables
IEC 60245-3 Rubber Insulated Cables
IEC 60255-13 Electrical relays - Biased (percentage) differential relays
IEC 60255-22-5 Electrical relays - Electrical disturbance tests for measuring relays and protecti
IEC 60255-23 Electrical Relays - Contact Performance
IEC 60255-24 Electrical relays - Common format for transient data exchange (COMTRADE) for power s
IEC 60255-3 Electrical relays - Single input energizing quantity measuring relays with dependent
IEC 60255-5 Electrical relays - Insulation coordination for measuring relays and protection equip
IEC 60255-6 Electrical relays - Measuring relays and protection equipment
IEC 60255-8 Electrical relays - Thermal electrical relays
IEC 60269-1 Low-voltage fuses - General requirements
IEC 60269-2 Low-voltage fuses - Supplementary requirements for fuses for use by authorized person
IEC 60269-2-1 Low-voltage fuses - Supplemetary Requirements for Fuses for use by authorized perso
IEC 60269-4 Low-voltage fuses - Supplementary requirements for fuse-links for the protection of s
IEC 60269-4-1 Low-voltage fuses - Supplementary requirements for fuse-links for the protection of
IEC 60298 A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to
IEC 60331 Fire Resisting Charecteristics of Electric Cables
IEC 60331-11 Test on Electrical Cables Under Fire Condition
IEC 60331-12 Test on Electrical Cables Under Fire Condition
IEC 60331-31 Test on Electrical Cables Under Fire Condition
IEC 60332-1 Tests on electric cables under fire conditions - Test on a single vertical insulated
IEC 60332-1_1 Tests on electric and optical fibre cables Under Fire Condition
IEC 60332-1_2 Tests on electric and optical fibre cables Under Fire Condition
IEC 60332-1_3 Tests on electric and optical fibre cables Under Fire Condition
IEC 60332-2 Tests on electric cables under fire conditions - Test on a single small vertical insu
IEC 60332-2_1 Tests on electric and optical fibre cables Under Fire Condition
IEC 60332-2_2 Tests on electric and optical fibre cables Under Fire Condition
IEC 60332-3-10 Tests on electric cables under fire conditions - Test for vertical flame spread of
IEC 60332-3-21 Tests on electric cables under fire conditions - Test for vertical flame spread of
IEC 60332-3-22 Test on Electrical Cables Under Fire Condition
IEC 60332-3-22 Tests on electric cables under fire conditions - Test for vertical flame spread of
IEC 60332-3-23 Tests on electric cables under fire conditions - Test for vertical flame spread of
IEC 60332-3-24 Tests on electric cables under fire conditions - Test for vertical flame spread of
IEC 60332-3-25 Tests on electric cables under fire conditions - Test for vertical flame spread of
IEC 60364-1 Electrical installations of buildings - Fundamental principles, assessment of general
IEC 60364-3 Electrical Installations of Buildings
IEC 60364-5-52 Electrical installations of buildings - Selection and erection of electrical equip
IEC 60364-5-54 Electrical installations of buildings - Selection and erection of electrical equip
IEC 60364-5-548 Electrical installations of buildings - Selection and erection of electrical equi
IEC 60364-5-55 Electrical installations of buildings - Selection and erection of electrical equip
IEC 60364-5-56 Electrical installations of buildings - Selection and erection of electrical equip
IEC 60364-7-707 Electrical installations of buildings - Requirements for special installations or
IEC 60439-1 Low-voltage switchgear and controlgear assemblies - Type-tested and partially ty
IEC 60439-2 Low-voltage switchgear and controlgear assemblies - Particular requirements for busba
IEC 60439-3 Low-voltage switchgear and controlgear assemblies - Particular requirements for Iow-v
IEC 60439-4 Low-voltage switchgear and controlgear assemblies - Particular requirements for assem
IEC 60439-5 Low-voltage switchgear and controlgear assemblies - Particular requirements for assem
IEC 60502-1 Power cables with extruded insulation and their accessories for rated voltages
IEC 60502-2 Power cables with extruded insulation and their accessories for rated voltages
IEC 60502-4 Power cables with extruded insulation and their accessories for rated voltages
IEC 60529 Degrees of protection provided by enclosures (IP Code)
IEC 60534-1 Industrial Process Control Valves - Terminology & General Considerations
IEC 60534-2_1 Industrial Process Control Valves - Flow capacity Equations
IEC 60534-2_3 Industrial Process Control Valves - Flow capacity Equations
IEC 60534-2_4 Industrial Process Control Valves - Flow capacity Equations
IEC 60534-2_5 Industrial Process Control Valves - Flow capacity Equations
IEC 60534-3 Industrial Process Control Valves - Dimensions
IEC 60534-3_1 Industrial Process Control Valves - Dimensions
IEC 60534-3_2 Industrial Process Control Valves - Dimensions
IEC 60534-3_3 Industrial Process Control Valves - Dimensions
IEC 60534-4 Industrial Process Control Valves - Inspection & Routine Testing
IEC 60534-5 Industrial Process Control Valves - Marking
IEC 60534-6 Industrial Process Control Valves - Mounting details for attachment of positioners
IEC 60534-6_1 Industrial Process Control Valves - Mounting details for attachment of positioners
IEC 60534-6_2 Industrial Process Control Valves - Mounting details for attachment of positioners

柊镜 · 发表于 2009-7-3 16:07

IEC 60534-7 Industrial Process Control Valves - Data Sheet
IEC 60534-8_1 Industrial Process Control Valves - Noise Considerations
IEC 60534-8_2 Industrial Process Control Valves - Noise Considerations
IEC 60534-8_3 Control valve aerodynamic noise prediction method
IEC 60534-8_4 Industrial Process Control Valves - Noise Considerations
IEC 60584-1 Thermocouples - Reference tables
IEC 60584-2 Thermocouples - Tolerances
IEC 60584-3 Thermocouples - Extension and compensating cables
IEC 60694 Common specifications for high -voltage switchgear and controlgear standards
IEC 60726 Dry Type Power Transmformers
IEC 60751 Industrial platinum resistance thermometer Sensors
IEC 60793-1-44 Optical fibres - Measurement methods and test procedures - Cut-off wavelength
IEC 60874-14-4 Connectors for optical fibres and cables - Detail specification for fibre optic adaptor (simplex) type SC for multimode fibre
IEC 60909-0 Short-circuit currents in three-phase a.c. systems - Calculation of currents
IEC 60909-1 Short-circuit currents in three-phase a.c. systems - Factors for the calculation of s
IEC 60909-2 Electrical equipment - Data for short-circuit current calculations
IEC 60909-3 Short-circuit currents in three-phase a.c. systems - Currents during two separate sim
IEC 60909-4 Short-circuit currents in three-phase a.c. systems - Examples for the calculation of
IEC 60947-1 Low-voltage switchgear and controlgear - General rules
IEC 60947-1-2004 Low-voltage switchgear and controlgear - General rules
IEC 60947-2 Low-voltage switchgear and controlgear - Circuit Breakers
IEC 60947-3 Low-voltage switchgear and controlgear - Switches, disconnectors, switch-disconnector
IEC 60947-4-1 Low-voltage switchgear and controlgear - Contactors and Motor Starters - Electromec
IEC 60947-4-2 Low-voltage switchgear and controlgear - Contactors and Motor Starters - AC Semicon
IEC 60947-4-3 Low-voltage switchgear and controlgear - Contactors and motor-starters - AC semicon
IEC 60947-6-1 Low-voltage switchgear and controlgear - Multiple function equipment - Automatic tr
IEC 60947-6-2 Low-voltage switchgear and controlgear - Multiple function equipment - Control and
IEC 60947-7-1 Low-voltage switchgear and controlgear - Ancillary equipment - Terminal blocks for
IEC 61131-1 Programmable controllers - General information
IEC 61131-2 Programmable controllers - Equipment Requirements and Tests
IEC 61131-3 Programmable controllers - Programming languages
IEC 61131-4 Programmable controllers - User guidelines
IEC 61131-5 Programmable controllers - Communications
IEC 61131-7 Programmable controllers - Fuzzy control programming
IEC 61131-8 Programmable controllers - Guidelines for the application and implementation of programming languages
IEC 61158-1 Overview and guidance for the IEC 61158 series
IEC 61158-2 Physical layer specification and service definition
IEC 61158-3 Data link service definition
IEC 61508 Part 1 - General Requirements
IEC 61508 Part 1 Addenda
IEC 61508 Part 2 - Requirements for Electrical - Electronic programmable electronic safety-related systems
IEC 61508 Part 3 - Software Requirements
IEC 61508 Part 3 Addenda
IEC 61508 Part 4 - Definitions and Abbreviations
IEC 61508 Part 4 Addenda
IEC 61508 Part 5 - Examples of Methods for the determination of safety integrity levels
IEC 61508 Part 5 Addenda
IEC 61508 Part 6 - Guidelines on the application of parts 2 and 3
IEC 61508 Part 7 Overview of Techniques & Measures
IEC 61511 Part-1 Framework, definitions, system, hardware and software requirements
IEC 61511 Part-2 Guidelines in the application of IEC 61511-1 - Informative
IEC 61511 Part-3 Guidance for the determination of safety integrity levels - informative
IEC 61537 Cable tray systems and cable ladder systems
IEC 61831 On-line analyser systems - Guide to design and installation
IEC 61832 Analyser systems - Guide to technical enquiry & Bid Evaluation
IEC 61892-6 Mobile and fixed offshore units - Electrical installations
IEC 62086-1 Electrical apparatus for explosive gas atmospheres - Electrical resistance trace he
IEC 62271-100 High-voltage switchgear and controlgear - High-voltage alternating-current circuit-
IEC 62271-102 High-voltage switchgear and controlgear - High-voltage alternating-current Disconne
IEC 62271-105 High-voltage switchgear and controlgear - Alternating-current Switch Fuse Combinati
IEC 62271-200 High-voltage switchgear and controlgear - AC metal-enclosed switchgear and controlg
IEC 62271-203 High-voltage switchgear and controlgear - Gas-insulated metal-enclosed swithgear
IEC 62271-308 High-voltage switchgear and controlgear - Guide to Asymetrical shoet circuit breaki
IEC PAS 62030 Real-Time Publish-Subscribe (RTPS) Wire Protocol Specification Version 1.0
IEC TR 62095 Electric cables - Calculations for current ratings - Finite element method
IEC TR 62271-310 High-voltage switchgear and controlgear - Electrical endurance testing for circuit
--------------------------------------------------------------------------------------------------------------------------
以上是清单

longkui · 发表于 2009-7-3 16:38

原帖由 iamsense 于 2009-7-1 21:59 发表
CST1234高手。谢谢解答。
请问，在哪个船级社的规范上看到对发电机的保护设定的。我手头上只有BV的，没有查到相关的资料。
说明一点的是，我所做的那些设定都是根据NEC的标准来设定的。当然那是具有针对性的，不是 ...

你买的什么电扇啊。这么容易坏，其实像你这种情况，主要是电机里转子和磁铁缺少润滑油或者是轴缺油而引起的！~~一般买的家用电扇就是转不动也很难烧掉，你买的电扇质量太差了！~~

柊镜 · 发表于 2009-7-3 17:03

http://rapidshare.com/files/109007501/IECstandards.part1.rar
http://rapidshare.com/files/109015565/IECstandards.part2.rar
http://rapidshare.com/files/109022214/IECstandards.part3.rar
http://rapidshare.com/files/108998436/IECstandards.part4.rar
-----------------------------------------------------------------------------------------
注意，点free use进去，等1分钟可下
两次下载要间隔12分钟
版本不是最新的

wangyufeng · 发表于 2009-7-3 17:10

谁有船舶电站的书，共享一下，好吧！

小杆 · 发表于 2009-7-3 19:16

原帖由 wangyufeng 于 2009-7-3 17:10 发表
谁有船舶电站的书，共享一下，好吧！

W A I T。。。。

小杆 · 发表于 2009-7-3 19:18

[local]1[/local]船舶电站，我觉得这本书很有水平了。

我发不了附件。。发个连接吧
传送
http://bbs.81tech.com/read.php?t ... B0%B5%E7%D5%BE.html

[ 本帖最后由小杆于 2009-7-3 19:31 编辑 ]

柊镜 · 发表于 2009-7-3 22:23

我发给你了，不过这个是旧版了

柊镜 · 发表于 2009-7-3 23:12

原帖由 iamsense 于 2009-7-3 22:48 发表
谢谢柊镜。前面这个字怎么发音啊。

哦，读“zhong”

三生石 · 发表于 2009-7-4 09:18

这个资料我也想要.....能再施舍给我一次吗?

柊镜 · 发表于 2009-7-4 09:29

那你把邮箱留个哈

三生石 · 发表于 2009-7-4 18:19

292913600@qq.com..............thanks so much..............

柊镜 · 发表于 2009-7-4 21:50

发了，请查收

[电气] 看看这么选断路器对么？

IEC

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