Results 21 to 30 of about 63,848 (255)
Design of novel intrinsically safe power supply with 'ia' grade [PDF]
Gong-kuang zidonghua, 2017 According to working condition of mine-used power supply in coal mine underground, novel intrinsically safe power supply with 'ia' grade was designed. The power supply uses a fully enclosed AC-DC module to eliminate special flameproof enclosure, and has ...
YU Zhixue, FANG Xupeng, ZHAO Yang
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Gong-kuang zidonghua, 2020 For problems of large output voltage ripple-wave and poor intrinsic safety performance existed in mine-used intrinsic safety type power supply caused by large filtering capacitor of switching converter, a filtering capacitor resolution scheme was ...
CHEN Huili, LI Jie
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Research of Mine-used Digital Three-phase Power Supply
Gong-kuang zidonghua, 2012 For the problem of harmonic pollution of underground power network caused by existing mine-used three-phase power supply, a mine-used digital three-phase power supply based on STM32F103VB was designed and working principle and control strategies of the ...
YANG Jian-kang +2 more
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Research and Design Idea of a New Type of Power Supply System of Central Substation of Coal Mine [PDF]
Gong-kuang zidonghua, 2010 A design idea of new type of power supply system of central substation of coal mine was proposed on the basis of analyzing existing technology status of power supply system of central substation of coal mine.
YANG Wei-yi
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Design of Battery Management System of Mine-used DC Power Supply
Gong-kuang zidonghua, 2012 The paper introduced overall structure and designs of hardware and software of battery management system of mine-used DC power supply. The system assesses remaining capacity by detecting charge current and discharge current to ensure continuous power ...
TIAN Wei-ming
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Design of a new type of protection circuit of mine-used intrinsic safety power supply
Gong-kuang zidonghua, 2013 The paper put forward a design scheme of a new type of protection circuit of mine-used intrinsic safety power supply with LM339 comparator and MAX4080SASA current detection chip based on the analysis of advantages and disadvantages of traditional ...
ZHOU Xue-feng
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Basic Requirements and Design Method of Mine-used Intrinsic Safety Power Supply
Gong-kuang zidonghua, 2012 Combining with related requirements of new national standard GB3836.4-2010 and Mining Products Safety Approval and Certification Center, the paper analyzed technical performance of mine-used intrinsic safety power supply, namely electrical isolation ...
ZHU Qian-wei
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Design of mine-used adaptive wide-voltage power supply with explosion-proof and intrinsic safety
Gong-kuang zidonghua, 2013 For characteristics that power supplys in coal mine underground has multi input voltage grades and are susceptible to disturbed when big equipments are starting or stopping, the paper put forward a design scheme of adaptive wide-voltage power supply with
LIU Ya-hui, GUO Jiang-tao, LIN Yin
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Design of wide range DC input power module used in coal mine [PDF]
Gong-kuang zidonghua, 2015 In view of problems that power supply voltage level and power type between mine-used sensors and DC power supply system is inconsistent, a design scheme of new type of wide range DC input and intrinsic safety type power module was put forward.
HU Yun +3 more
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AQ 6201-2017 General Technical Requirements of Coal Mine Safety Monitoring System (draft for approval) [PDF]
Gong-kuang zidonghua, 2017 The standard stipulates product classification, general requirements, environmental conditions, power supply, system design requirements, basic functions, software functions, main technical indexes, transmission performance, power fluctuation ...
SUN Jiping
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