Standard No.:	MT 287-1992
English Name:	General Technical Specifications for Signal Equipment of Coal Mine
Chinese Name:	煤矿信号设备通用技术条件
Chinese Classification:	D98    Coal mine special equipment
Professional Classification:	MT    Professional Standard - Coal
Issued by:	0
Issued on:	1992-3-31
Implemented on:	1992-8-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	6000 words
Price(USD):	120.0
Delivery:	via email in 1 business day

1 Subject Content and Application Scope This standard specifies the product classification, technical requirements, test method, inspection rule, marking, packaging, transportation and storage of signal equipment of coal mine (hereinafter referred to as "signal equipment"). This standard is applicable to the signal equipment of coal mine and the acoustic-optical signal part of other equipment. This standard is not applicable to the traffic light in rail transportation. 2 Normative References GB 156 Voltage and Frequency Ratings for Electrical Equipment GB 191 Packaging - Pictorial Markings for Handling of Goods GB 2682 Colors of Indicator Lights and Push-buttons Used in Electrical Assembly Devices GB 3836.1 Electrical Apparatus for Explosive Atmospheres - General Requirements GB 3836.2 Electrical Apparatus for Explosive Atmospheres - Flameproof Electrical Apparatus “d” GB 3836.3 Electrical Apparatus for Explosive Atmospheres - Increased Safety Electrical Apparatus “e” GB 3836.4 Electrical Apparatus for Explosive Atmospheres - Intrinsically Safe Circuits and Electrical Apparatus “i" GB 4942.2 Degrees of Protection Provided by Enclosures for Low-voltage Apparatus GB 5080.1~5080.7 Equipment Reliability Testing GB 12173 Mining Electrical Apparatus for Non Hazardous Area MT 209 General Technical Requirements for Electric and Electronic Products used for Communication, Detection and Control in Coal Mine MT 210 Basic Test Method for Electric and Electronic Products used for Communication, Detection and Control in Coal Mine MT 211 Quality Inspection Rule for Electric and Electronic Products used for Communication, Detection, and Control in Coal Mine MT 286 Model Compilation Method and Management Method for Automotive Product of Coal Mine Communication 3 Product Classification 3.1 Model 3.1.1 The composition of signal equipment model is as follows:

1 Subject Content and Application Scope 2 Normative References 3 Product Classification 4 Technical Requirement 5 Test Method 6 Inspection Rules 7 Marking, Packaging, Transportation and Storage Appendix A (Informative) Environmental Noise Level of Underground Coal Mine Additional Explanation