|
US$534.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GBZ25842.2-2012: Low-voltage switchgear and controlgear -- Over-current protective devices -- Part 2: Selectivity under over-current conditions
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/Z 25842.2-2012 | English | 534 |
Add to Cart
|
3 days [Need to translate]
|
Low-voltage switchgear and controlgear -- Over-current protective devices -- Part 2: Selectivity under over-current conditions
| Valid |
GB/Z 25842.2-2012
|
PDF similar to GBZ25842.2-2012
Basic data | Standard ID | GB/Z 25842.2-2012 (GB/Z25842.2-2012) | | Description (Translated English) | Low-voltage switchgear and controlgear -- Over-current protective devices -- Part 2: Selectivity under over-current conditions | | Sector / Industry | National Standard | | Classification of Chinese Standard | K30 | | Classification of International Standard | 29.130.01 | | Word Count Estimation | 27,268 | | Quoted Standard | GB 10963.1-2005; GB 13539.1-2008; GB/T 13539.2-2008; GB 13539.3-2008; GB 14048.2-2008; GB 14048.6-2008; GB 14048.9; GB/Z 25842.1-2010; IEC 60947-1-2007; IEC 60255-11; IEC 60255-1; IEC 60255-12; IEC 60255-127; IEC 60255-13; IEC 60255-151; IEC 60255-16; IEC | | Adopted Standard | IECTR 61912-2-2009, IDT | | Regulation (derived from) | National Standards Bulletin 2012 No. 28 | | Issuing agency(ies) | Ministry of Health of the People's Republic of China | | Summary | This standard specifies the definitions of relevant terms. The technical guidance document even for low-voltage switchgear and control equipment did not prepare overcurrent protective devices between selective application guidelines, and gives some applic | GBZ25842.2-2012: Low-voltage switchgear and controlgear -- Over-current protective devices -- Part 2: Selectivity under over-current conditions
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Low-voltage switchgear and controlgear. Over-current protective devices. Part 2. Selectivity under over-current conditions
ICS 29.130.01
K30
People's Republic of China national standardization of technical guidance documents
Low-voltage switchgear and control equipment over-current protection
Part 2. Selectivity under overcurrent conditions
Part 2.Selectivityunderover-currentconditions
(IEC /T R61912-2.2009, IDT)
Posted on.2012-11-05
2013-02-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Preface Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and Definitions, Abbreviations 2
3.1 Terms and definitions 2
3.2 Abbreviations 4
4 The scope of the selectivity requirement 4
4.1 General requirements 4
4.2 Motor Protection Circuit Breakers/Manual Motor Starters 5
5 Selective determination 5
5.1 circuit breaker as UD 5
5.2 Fuses (in accordance with GB 13539.1) as UD 10
6 Remaining current device (RCD) 13
6.1 General requirements 13
6.2 Selectivity - RCD/RCD 13
7 Regional Selective Chain (ZSI) 15
7.1 General requirements 15
7.2 working principle 15
7.3 Examples 15
8 Overcurrent protection relay (OCR) --- with or without time-related single-input measurement relay 16
Appendix A (informative) Example of selectivity between overcurrent protective devices --- example of the applicable selectivity level of the circuit breaker 17
Appendix B (informative) Fixed load --- fixed load in the overload area on the selectivity of 20
References 23
Foreword
GB /Z 25842 "low-voltage switchgear and control equipment over-current protection electrical" is divided into two parts.
--- Part 1. The application of short-circuit fixed;
--- Part 2. Over-current conditions of selectivity.
This Guidance Document is Part 2 of GB /Z 25842.
This instructional document has been drafted in accordance with the rules given in GB/T 1.1-2009.
This Guidance Document is equivalent to IEC /T R61912-2.2009 "Low-voltage switchgear and control equipment over-current protection device 2
Part. Over-current conditions of selectivity. "
Our document, which corresponds in a consistent manner to the international documents that are normative references in this Guidance Document, is as follows.
--- GB 14048.1 low-voltage switchgear and control equipment Part 1. General (IEC 60947-1.2007, MOD)
--- GB 14048.4-2010 low-voltage switchgear and control equipment Part 4-1. Contactor and motor starter motor
Contactor and motor starter (including motor protectors) (IEC 60947-4-1.2009, MOD)
--- GB 16916.1-2003 Residual current operated circuit breakers (RCCB) for household and similar purposes without overcurrent protection
Part 1. General rules (IEC 61008-1.1996, MOD)
--- GB 16917.1-2003 Residual current operated circuit breakers (RCBO) with overcurrent protection for household and similar purposes No. 1
Section. General rules (IEC 61009-1.1996, MOD)
The following editorial changes have been made to this technical document.
--- Remove the foreword of the international standard;
--- Remove 3.1 international standards in the 3.1 term index;
--- "This report" be changed to "the guidance of technical documents";
--- Reference document IEC /T R61459 "Fuse and contactor/motor starter coordinated use of Guide" and
IEC /T R61818 "Low-voltage Fuse Application Guide" instead quoted IEC 60269-5.2010 "Low-voltage Fuse Application Guide."
This guidance document is proposed by China Electrical Equipment Industry Association.
The guidance of technical documents by the National Standardization Technical Committee of low-voltage electrical (SAC/TC189) centralized.
This guidance is responsible for the drafting of technical documents unit. Shanghai Electric Institute of Science and Technology, Universal Group Co., Ltd., Shanghai Electric Technology Co., Ltd.
Limited company.
The guidance of technical documents to participate in the drafting unit. Shanghai Siemens Line Protection System Co., Ltd., Guizhou Changzheng Switch Manufacturing Co., Ltd.
Division, Changshu Switch Manufacturing Co., Ltd., Zhejiang Chint Electric Co., Ltd., Zhejiang Tianzheng Electric Co., Ltd., Schneider Electric (China
State) Co., Ltd., Shanghai Electrical Equipment Testing Institute, Wah Tung Electrical Co., Ltd., China Quality Certification Center, Delixi Electric Co., Ltd.,
Hangzhou Kefeng Electronics Co., Ltd., Fateh Electric (Jiangsu) Co., Ltd., Suzhou Electric Apparatus Research Institute Co., Ltd., Wuxi TCL
Legrand Low Voltage Appliance Co., Ltd.
The main drafters of this technical guidance document. Li Hui, Huang Jingye, Li Lifang.
The guiding technical documents to participate in the drafting of the person. Bao Zhang Yao, He Guibing, Chu Bo, Fang Fengshu, Wang Weiguo, Sun Haitao, Zeng Jing Jing, Feng Xinmin,
Lang Jiancai, Huang Rongrong, Ni Shijie, Ding Gaofeng, Wang Jingen, Fu Kai.
Low-voltage switchgear and control equipment over-current protection
Part 2. Selectivity under overcurrent conditions
1 Scope
This guidance document defines the definitions of terms.
This guideline applies to the selective application of low-voltage switch equipment and control equipment over-current protection between the selective application of guidelines and
Some examples of applications are given.
The following product standards are referenced in this guidance document.
--- IEC 60255-3, IEC 60255-6, IEC 60255-8, IEC 60255-12;
--- IEC 60269-1, IEC 60269-2, IEC 60269-3, IEC 60269-4;
--- IEC 60898-1;
--- IEC 60947 series;
--- IEC 61008-1 series;
--- IEC 61009-1 series.
This guidance does not consider other forms of protection, such as reverse power protection, directional protection and arc protection systems.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB 10963.1-2005 Electrical accessories for household and similar places overcurrent protection circuit breaker Part 1.
Road devices (IEC 60898-1.2002, IDT)
Low-voltage fuses Part 1. Basic requirements (IEC 60269-1.2006, IDT)
Low voltage fuses - Part 2. Supplementary requirements for fuses used by full time personnel (mainly for workers
Industry Fuses) Standard Fuse System Examples A to I (IEC 60269-2.2006, IDT)
GB 13539.3-2008 Low-voltage fuses - Part 3 - Supplementary requirements for fuses used by unskilled persons (mainly for domestic use
And Fuses of Similar Purposes) Examples of Standardized Fuse Systems A to F (IEC 60269-3.2006, IDT)
GB 14048.2-2008 Low-voltage switchgear and controlgear - Part 2. Circuit breakers (IEC 60947-2.2006, IDT)
GB 14048.6-2008 Low-voltage switchgear and control equipment - Part 4-2. Contactor and motor starter AC semiconductors
Body motor controllers and starters (including soft starter) (IEC 60947-4-2.2007, IDT)
GB 14048.9 Low-voltage switchgear and control equipment Part 6-2. Multi-function electrical (equipment) control and protection switch electrical equipment
Prepared) (CPS) (IEC 60947-6-2.2007, IDT)
GB /Z 25842.1-2010 Low-voltage switchgear and controlgear overcurrent protection appliances Part 1. Application of short-circuit fixed
(IEC /T R61912-1.2007, IDT)
IEC 60947-1-2007 low-voltage switchgear and control equipment Part 1. General (Low-voltageswithgearandcon-
trolgear-Part 1.Generalrules)
IEC 60255 (all parts) Electrical Relays (Electricalrelays)
IEC 60269-4, Low voltage fuses - Part 4. Supplementary requirements for semiconductor equipment protection fuses (Low-voltage fuses-
Part 4.Supplementaryrequirementsforfuse-linksfortheprotectionofsemiconductordevices)
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GBZ25842.2-2012_English be delivered?Answer: Upon your order, we will start to translate GBZ25842.2-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GBZ25842.2-2012_English with my colleagues?Answer: Yes. The purchased PDF of GBZ25842.2-2012_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|