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NB/T 10754-2021Mine rectifier (English PDF)

矿用整流器

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

November 16, 2021

Implementation date

February 16, 2022

Scope

NB/T 10754-2021 is the English-translated version of 矿用整流器.

NB/T 10754-2021 covers the rectifiers that form part of flameproof AC variable-frequency drives used in the explosive atmospheres of coal mines. It is limited to units for AC voltages up to 1140 V and powers up to 1200 kW.

The standard defines the product model and its meaning, then gives technical requirements, test items and methods, inspection rules, marking and nameplates, and rules for packaging, transport, lifting, storage and accompanying documents.

The references point to the checks involved: flameproof and increased-safety protection under GB 3836, IP rating, supply voltage deviation, harmonics, frequency deviation and three-phase unbalance limits, electromagnetic compatibility of adjustable-speed drives and damp heat testing.

Manufacturers of mine drives and testing centres use it. Issued on 16 November 2021, it has applied since 16 February 2022.

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Document preview — NB/T 10754-2021

National Standard of the People's Republic of China

Classification: D 98

Issued by: National Energy Administration of the People's Republic of China

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Product Model
5 Technical requirements
6 Inspection method
7 Inspection Rules
8 Logos and nameplates
9 Packaging, transportation and hoisting, storage and accompanying documents

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 of Standardization Documents" drafted.

1 Scope

This document specifies the product model and meaning, technical requirements, test items and methods, inspection rules, signs, packaging, transportation Transport and hoisting and storage.

This document is applicable to AC voltage of 1140V and below, power of 1200kW and below, for use in explosive environments in coal mines The rectifier for mine flameproof AC variable frequency speed regulating device (hereinafter referred to as "rectifier").

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 2423.4-2008 Environmental testing of electrical and electronic products - Part 2: Test method Test Db. Damp heat (12h 12h cycle)

GB 3836.1-2010 Explosive Atmospheres Part 1: General Requirements for Equipment

GB 3836.2-2010 Explosive Atmospheres Part 2: Equipment protected by flameproof enclosure "d"

GB 3836.3-2010 Explosive Atmospheres Part 3: Equipment Protected by Increased Safety "e"

GB/T 4208-2017 Protection class of enclosure (IP code)

GB/T 12325-2008 Power Quality Supply Voltage Allowable Deviation

GB 12668.3-2012 Speed-regulating electrical drive systems - Part 3: Electromagnetic compatibility standards for products and their specific tests method

GB 14048.1-2012 Low-voltage switchgear and controlgear Part 1: General

GB/T 14549-1993 Power Quality Harmonics of Public Grid

GB/T 15945-2008 Frequency Deviation of Power Quality Power System

GB/T 15543-2008 Three-phase voltage unbalance of power quality

AQ1043-2007 Mining Product Safety Signs

MT/T 111-2011 Mine explosion-proof low-voltage AC vacuum electromagnetic starter

MT/T 661-2011 General technical conditions for electrical equipment used in coal mines

MT/T 1099-2009 Mining frequency conversion speed control device

JB/T 9689-1999 Rectifier for Traction Substation

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 Rectifier

Mining converters for rectification.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

AQ1043-2007 · MT/T 111-2011 · MT/T 1099-2009

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