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NB/T 11631-2024: Explosion proof dual power switching switch used for auxiliary fans used for mine
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| NB/T 11631-2024 | English | 539 |
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Explosion proof dual power switching switch used for auxiliary fans used for mine
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NB/T 11631-2024
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Basic data | Standard ID | NB/T 11631-2024 (NB/T11631-2024) | | Description (Translated English) | Explosion proof dual power switching switch used for auxiliary fans used for mine | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | D98 | | Classification of International Standard | 73.100.99 | | Word Count Estimation | 26,264 | | Date of Issue | 2024-09-24 | | Date of Implementation | 2025-03-24 | | Issuing agency(ies) | National Energy Administration | NB/T 11631-2024: Explosion proof dual power switching switch used for auxiliary fans used for mine
---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.
Explosion proof dual power switching switch used for auxiliary fans used for mine
Energy Industry Standards of the People's Republic of China
The National Energy Administration released
Explosion-proof dual power switch for local ventilation fans in coal mines
Explosion proof dual power switching switch used for auxiliary
fans used for mine
Published on 2024-09-24
2025-03-24 Implementation
CCS D 98
ICS 73.100.99
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Classification and model naming 2
4.1 Classification 2
4.2 Model naming 2
5 Features 2
5.1 Rated value 2
5.2 Protective devices 3
6 Normal working conditions 4
7 Technical Requirements 4
7.1 General requirements 4
7.2 Structural requirements 4
7.3 Performance requirements 7
7.4 Function 13
8 Test methods 13
8.1 Verification Structure 13
8.2 Verification Performance 15
8.3 Verification Function 16
9 Inspection Rules 17
9.1 Inspection categories 17
9.2 Inspection Items 17
9.3 Factory Inspection 19
9.4 Type inspection 19
9.5 Decision Rules 19
10 Marking, packaging, transportation and storage 19
10.1 Signs 19
10.2 Packaging 20
10.3 Transportation 20
10.4 Storage 20
Reference 21
Table of contents
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Science and Technology Development Department of the China Coal Industry Association.
This document is under the jurisdiction of the Coal Industry Coal Mine Safety Standardization Technical Committee.
This document was drafted by. China Coal Technology and Engineering Group Chongqing Research Institute Co., Ltd., Chongqing Safety Standard Testing Institute Co., Ltd., Safety Standard National Mining
Product Safety Marking Center Co., Ltd., Rizhao Zhongbo Electrical Technology Co., Ltd., Huainan Wantai Electronics Co., Ltd., Shanxi Changzhi Shell Electric
Gas Co., Ltd. and Ping An Electric Co., Ltd.
The main drafters of this document are. Peng Hongling, Zhang Shaojie, Su Kejia, Liu Feng, Yin Lianggui, Guo Guiwei, Liu Gang, Song Zhansong, Gao Xiaobin, Ge Xiaojun,
Guo Shuqing, Chen Xingwen, Ni Rui, Li Yufei, Chen Zhao, Tan Lei, Li Yan, He Xianneng, Deng Peng, Yang Fan, Shi Faqiang, and He Lehui.
Explosion-proof dual power switch for local ventilation fans in coal mines
1 Scope
This document specifies the classification and model naming, special features, and specifications of explosion-proof dual power transfer switches (hereinafter referred to as “transfer switches”) for local ventilation fans in coal mines.
performance, normal working conditions, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage.
This document is applicable to the control of dual power supply of local ventilation fans in coal mines, in AC 50 Hz, voltage 1 140 V and below lines.
A switch for line switching and circuit protection.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.
document.
GB/T 191 Pictorial markings for packaging, storage and transportation
GB/T 2423.4 Environmental testing for electric and electronic products Part 2.Test method Test Db Cyclic damp heat (12 h 12 h
cycle)
GB/T 2900.18 Electrical terminology - Low voltage electrical appliances
GB/T 2900.35 Electrical terminology - Explosive atmospheres
GB/T 3836.1-2021 Explosive atmospheres Part 1.General requirements for equipment
GB/T 3836.2-2021 Explosive atmospheres Part 2.Equipment protected by flameproof enclosure "d"
GB/T 3836.3 Explosive atmospheres Part 3.Equipment protected by increased safety "e"
GB/T 3836.4-2021 Explosive atmospheres Part 4.Equipment protected by intrinsic safety type "i"
GB/T 4205 Basic and safety rules for human-machine interface signs and symbols Operating rules
GB/T 4208-2017 Degrees of protection provided by enclosures (IP Code)
GB/T 14048.1-2023 Low-voltage switchgear and controlgear Part 1.General
GB/T 14048.3-2017 Low-voltage switchgear and controlgear Part 3.Switches, isolators, disconnectors and fuse groups
Electric
GB/T 14048.4-2020 Low-voltage switchgear and controlgear Part 4-1.Electromechanical contactors and motor starters
Contactors and motor starters (including motor protectors)
GB/T 14048.5 Low-voltage switchgear and controlgear Part 5-1.Control circuit devices and switching elements Electromechanical control circuits
Road Electric
AQ 1043 Mining Product Safety Signs and Labels
MT/T 111-2011 Explosion-proof low-voltage AC vacuum electromagnetic starter for mining
MT/T 154.2 Method for compiling model numbers of electromechanical products for coal mines Part 2.Method for compiling model numbers of electrical products
MT/T 175 Electronic protector for explosion-proof electromagnetic starter for mining
MT/T 661-2011 General technical requirements for electrical equipment used in underground coal mines
3 Terms and definitions
The terms and definitions defined in GB/T 14048.1, GB/T 2900.18, GB/T 2900.35 and the following apply to this document.
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