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MT 209-1990 English PDF

MT 209-1990_English: PDF (MT209-1990)
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MT 209-1990English150 Add to Cart 0--9 seconds. Auto-delivery Electrical and electronic products for coal mine - Communication, testing and control - General technical requirements   MT 209-1990
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BASIC DATA
Standard ID MT 209-1990 (MT209-1990)
Description (Translated English) Electrical and electronic products for coal mine - Communication, testing and control - General technical requirements
Sector / Industry Coal Industry Standard
Classification of Chinese Standard D98
Word Count Estimation 17,187
Date of Issue 1990/4/4
Date of Implementation 1990/12/1
Drafting Organization Changzhou Automation Research Institute of Coal Research Institute
Summary This standard specifies the mine communications, detection, control the basic standards for electric and electronic products (hereinafter referred to as the product). This standard applies to: . A mine communications, signal systems and equipment; b mine infrastructure, and environmental monitoring of production processes, control, regulation systems, equipment and instrumentation; c measurement of mine electrical and mechanical equipment, control equipment and instruments...


MT 209-90 (MT 209-1990) MT INDUSTRIAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA MT 209-90 Electrical and electronic products for coal mine communication, testing and control – General technical requirements ISSUED ON. APRIL 4, 1990 IMPLEMENTED ON. DECEMBER 1, 1990 Issued by. National Energy Administration 3. No action is required - Full-copy of this standard will be automatically & immediately delivered to your EMAIL address in 0~60 minutes. Table of Contents 1 Subject content and scope of application ... 3  2 Normative references ... 3  3 General provisions ... 5  4 Environmental conditions ... 5  5 Use performance ... 8  6 Appearance ... 11  7 Structure ... 12  8 Electrical clearance and creepage distance ... 13  9 Major components and elements ... 13  10 Temperature rise ... 16  11 Electrical safety ... 16  12 Stability ... 17  13 Explosion-proof performance ... 19  14 Marking ... 19  Annex A Selection of severity level for special environmental conditions (supplementary) ... 21  Annex B Effect of altitude on product temperature rise and insulation electrical strength (supplementary) ... 22  Annex C Explosion proof and mining - General products shall be tested (informative) ... 23  Additional information... 24  Electrical and electronic products for coal mine communication, testing and control – General technical requirements MT 209-90 This Standard is used in conjunction with MT 210 “Electrical and electronic products for coal mine communication, testing and control - Basic test method” and MT 211 “Electrical and electronic products for coal mine communication, testing and control - Quality inspection rules”. 1 Subject content and scope of application 1.1 This Standard specifies the basic technical requirements for electrical and electronic products for coal mine communication, testing and control (hereinafter referred to as products). 1.2 This Standard applies to. a. Coal mine communication, signal system and equipment; b. Monitoring, control, regulating system, equipment and instrumentation for coal mine infrastructure, production process and environment; c. Measurement and control equipment and instrumentation for electromechanical equipment in coal mines. 2 Normative references GB 156 Rated voltage GB 190 Label for packages of dangerous goods GB 191 Packaging - Pictorial markings for handling of goods GB 762 Standard current GB 1497 Basic standards for low voltage electrical appliances GB 2423.1 Basic environmental testing procedures for electrical and electronic products - Test A. Cold GB 2423.2 Basic environmental testing procedures for electrical and electronic products - Test B. Dry heat GB 2423.3 Basic environmental testing procedures for electrical and electronic products - Test Ca. Damp heat steady state GB 2423.4 Basic environmental testing procedures for electrical and electronic products - Test Db. Damp heat, cyclic GB 2423.5 Electrical and electronic products - Basic environmental test procedures - Test Ea. Shock GB 2423.6 Basic environmental testing procedures for electrical and electronic products - Test Eb. Bump GB 2423.10 Basic environmental testing procedures for electrical and electronic products - Test Fc. Vibration (sinusoidal) GB 2681 Conductor color in electrical assembly devices GB 2682 Color of indicator lights and push-buttons used in electrical assembly devices GB 3047.1 Basic dimensions of panels, stands and cabinets GB 3836.1 Electrical apparatus for explosive atmosphere - General requirements GB 3836.2 Electrical apparatus for explosive atmosphere - Flameproof electrical apparatus d GB 3836.3 Electrical apparatus for explosive atmosphere - Increased safety e GB 3836.4 Electrical apparatus for explosive atmosphere - Intrinsically safe circuits and electrical apparatus GB 4588.1 Technical requirements for single and double sided printed boards without metallized holes GB 4588.2 Technical requirements for single and double sided printed boards with metallized holes GB 4796 Classification of environmental parameters and severity of electrical and electronic products GB 4798.1 Electrical and electronic applications - Environmental conditions of use - Storage ZBY 120 Industrial automation instrumentation - Operating conditions temperature, humidity and atmospheric pressure SJ 2313 Printed circuit board dimension series MT 154.1 Preparation guidelines and management methods of coal mine electromechanical products MT 210 Electrical and electronic products for coal mine communication, testing and control - Basic test method standards in accordance with the type of the coal mine communication, testing and control products, AND shall comply with the relevant provisions of the corresponding national industry standards. a. Monitoring, control system and equipment. use functions, transmission distance, capacity, power supply method, input and output signals, quality indicators (bit error rate, accuracy or measurement error, etc.), transmission frequency, or rate; b. Testing instruments and sensors. use functions, power supply method, output signal, work system, sensitivity, measurement range, quality indicators (accuracy or measurement error); c. Communication system and equipment. use functions, power supply method, coverage, frequency used, signal method, capacity classification, network access requirements, voice quality, communication method, transmission attenuation, and defense. 5.1.5 The sound level of the coal mine underground signal product shall not be less than 85 dB. 5.2 Voltage and current 5.2.1 The rated voltage shall comply with the provisions of GB 156. 5.2.2 The rated current shall comply with the provisions of GB 762. 5.3 Signal system 5.3.1 General requirements In the coal mine monitoring and control system, the switching signals and analog signals of the information transmitted between the substation and the sensor and the controlled device shall comply with the provisions of this Clause. 5.3.2 Switching value 5.3.2.1 When the output current of the active switch output signal at the high level output state is 2 mA, the output voltage shall be not less than 3 V; at the low level output state, when the input current is 2 mA, the output voltage shall be not more than 0.5 V. 5.3.2.2 At the inactive switch output state, when it is disconnected (cut off), the leakage resistance between the two outputs shall be not less than 100 kΩ; when it is closed (connected) and the input current is 2 mA, the output end voltage shall be not more than 0.5 V. 5.3.3 Analog signal 5.3.3.1 DC analog signals shall be. 1 ~ 5 mA (load resistance 0 ~ 500 Ω or greater than 500 Ω). 4 ~ 20 mA (load resistance 0 ~ 350 Ω or greater than 350 Ω). 6.2 Metal parts shall not have corrosion and other mechanical damage. 6.3 The switch button shall be flexible and reliable in operation. The parts shall be tightened without loosening, AND the plugging moving parts shall be plugged freely. 6.4 The indicator lamps of different functions shall be distinguishable in colors, AND the function description symbols and texts as well as all product labels shall be clear, regular, and tightly installed. 6.5 The surface roughness of the flameproof joint face AND the flameproof holes shall comply with the relevant provisions, AND the surface shall be free form scratches, pinholes, or other defects. 7 Structure 7.1 General requirements 7.1.1 The product structure shall be such as able to ensure the safety, convenience, and reliability in the process of commissioning, running, operation, maintenance, handling and installation. 7.1.2 The same type of product shall be consistent in mechanical structure and electrical wiring. 7.1.3 The dimensions of the panel, frame and cabinet of the ground-surface control equipment shall comply with the provisions of GB 3047.1. 7.1.4 Products with operational and observational functions shall be designed for ease of operation and observation. 7.1.5 All ferrous metal components shall have a reliable protective layer. The fasteners shall be made of rust-proof or made of stainless steel AND shall be prevented from being automatically released... ......