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NB/T 11460-2023: Technical conditions of transient electromagnetic detecting instrument for coal-mine
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Technical conditions of transient electromagnetic detecting instrument for coal-mine
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NB/T 11460-2023
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Standard similar to NB/T 11460-2023 NB/T 11459 NB/T 11461 NB/T 11458 Basic data | Standard ID | NB/T 11460-2023 (NB/T11460-2023) | | Description (Translated English) | Technical conditions of transient electromagnetic detecting instrument for coal-mine | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | D82 | | Classification of International Standard | 73.100.99 | | Word Count Estimation | 18,156 | | Date of Issue | 2023-12-28 | | Date of Implementation | 2024-06-28 | | Issuing agency(ies) | National Energy Administration | NB/T 11460-2023: Technical conditions of transient electromagnetic detecting instrument for coal-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.
NB/T 11460-2023 English version. Technical conditions of transient electromagnetic detecting instrument for coal-mine
ICS 73.100.99
CCSD82
Energy Industry Standards of the People's Republic of China
Technical requirements for transient electromagnetic advance detectors for mines
Released on 2023-12-28
2024-06-28 implementation
The National Energy Administration released
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Naming, composition and classification 2
5 Technical Requirements 2
6 Test methods 5
7 Inspection Rules 10
8 Marking, packaging, transportation and storage 11
Foreword
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 China Coal Industry Association.
This document is under the jurisdiction of the Coal Industry Coal Mine Special Equipment Standardization Technical Committee.
This document was drafted by. China Coal Technology and Engineering Xi'an Research Institute (Group) Co., Ltd., China University of Mining and Technology, and Chang'an University.
The main drafters of this document are. Feng Hong, Li Ping, Wang Xiaobo, Zhang Zhe, Wang Bingchun, Yue Jianhua, Li Xiu and Zhao Zhao.
Technical requirements for transient electromagnetic advance detectors for mines
1 Scope
This document specifies the naming, composition and classification, technical requirements, test methods and procedures of mine transient electromagnetic advance detectors (hereinafter referred to as transient detectors).
Methods, inspection rules, marking, packaging, transportation and storage.
This document is applicable to the R&D, design, production and quality inspection of transient instruments.
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.
GB/T 191 Pictorial markings for packaging, storage and transportation
GB/T 2423.1 Environmental testing for electric and electronic products Part 2.Test methods Test A. Low temperature
GB/T 2423.2 Environmental testing for electric and electronic products Part 2.Test methods Test B. High temperature
GB/T 2423.4 Environmental testing for electric and electronic products Part 2.Test method Test Db. Cyclic damp heat (12h 12h cycle
ring)
GB/T 2423.5 Environmental testing Part 2.Test method Test Ea and guidance. Impact
GB/T 2423.10 Environmental testing Part 2.Test methods Test Fc. Vibration (sinusoidal)
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 3836.4-2021 Explosive atmospheres Part 4.Equipment protected by intrinsic safety type "i"
GB/T 4208-2017 Enclosure protection degree (IP code)
GB/T 10111-2008 Generation of random numbers and their application in product quality sampling inspection
GB/T 13384 General technical requirements for packaging of electromechanical products
AQ1043 Mining Product Safety Signs and Labels
MT210-1990 Basic test methods for electrical and electronic products used for communication, detection and control in coal mines
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Emission current emissioncurrent
In actual detection operations, when the transient instrument is transmitting, an excitation current is provided to the transmitting wire frame. After the transmitting voltage reaches the set value,
The current value recorded when the current is turned off.
3.2
Turn-off time
In actual detection operations, when the transmitting current is turned off, the time interval during which the current intensity drops from 100% of the initial stable current to 10%.
Note. Also called effective ramp step time width.
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