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MT 210-1990 PDF English


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MT 210-1990: PDF in English

MT 210-90 (MT 209-1990) MT INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA MT 210-90 Electrical and electronic products for coal mine communication, testing and control – Basic test method 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 ... 4 2 Reference standards ... 4 3 General provisions ... 5 4 Test conditions ... 6 5 General inspection ... 7 6 Performance indicator test ... 8 7 Insulation resistance detection ... 8 8 Power frequency withstand voltage test ... 9 9 Water pressure test ... 10 10 Power fluctuation adaptability test ... 11 11 Surface temperature measurement ... 11 12 Thermal stability test ... 12 13 Thermal drastic change test ... 13 14 Enclosure impact test ... 14 15 Drop test ... 16 16 Enclosure protection performance test ... 17 17 Rubber material aging test ... 17 18 Leading in device clamping test ... 18 19 Leading in device sealing performance test and mechanical strength test19 20 Connector twisting test ... 21 21 Cable pull-out test ... 22 22 Determination of surface insulation resistance ... 22 23 Working environment temperature test ... 23 24 Storage ambient temperature test ... 24 25 Vibration test ... 25 26 Impact test ... 26 27 Transportation test ... 27 28 Damp heat test ... 28 29 Anti-interference test ... 29 30 Reliability test ... 29 31 Strength test and explosion proof test ... 29 32 Intrinsically safe spark test ... 29 Annex A Detection method for surface flashover and leakage current increase in pressure resistance test (supplementary) ... 30 Additional information... 31 Electrical and electronic products for coal mine communication, testing and control – Basic test method MT 210-90 This Standard is used in conjunction with MT 209 “Electrical and electronic products for coal mine communication, testing and control - General technical requirements” 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 test method for electrical and electronic products for coal mine communication, testing and control. 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 Reference standards GB 531 Test method for hardness of vulcanized rubber shore A hardness GB 998 Basic testing methods of low voltage electric apparatus GB 1410 Methods of test for insulation resistance, volume resistivity and surface resistivity of solid insulating electrical materials GB 2423.1 Basic environmental testing procedures for electric and electronic products - Tests A. Cold GB 2423.2 Basic environmental testing procedures for electric and electronic products - Tests B. Dry heat GB 2423.3 Basic environmental testing procedures for electric and electronic products - Test Ca. Damp heat, steady state GB 2423.4 Basic environmental testing procedures for electric and electronic products - Test Db. Damp heat, cyclic GB 2423.5 Basic environmental testing procedures for electric and electronic products - Test Ea. Shock GB 2423.8 Basic environmental testing procedures for electric and electronic products - Test Ed. Free fall GB 2423.10 Basic environmental testing procedures for electric and electronic products - Test Fe. Vibration (Sinusoidal) GB 3836.2 Electrical apparatus for explosive atmosphere - Flameproof electrical apparatus “d” GB 3836.4 Electrical apparatus for explosive atmospheres - Intrinsically safe circuits and electrical apparatus “i" GB 4942.2 Low voltage electrical enclosure protection class GB 5080.1 ~ 5080.7 Equipment reliability testing GB 6379 Precision of test methods; Determination of repeatability and reproducibility for a standard test method by interlaboratory tests MT 209 Electrical and electronic products for coal mine communication, testing and control - General technical requirements 3 General provisions 3.1 The test items and test methods specified in the identification inspection, factory- exit inspection and type inspection of electrical and electronic products for coal mine communication, testing and control shall comply with the relevant provisions of this Standard. 3.2 The relevant standards shall specify the test method, severity level and test sequence (if any) used according to the product type and the use environment conditions. 3.3 The relevant standards shall specify the performance indicators and other relevant requirements of test specimen during the test or after the test according to MT 209. 3.4 When the conditions for carrying out overall test on large-scale products are 5 General inspection 5.1 Inspection requirements General inspection shall include appearance inspection, structural inspection, dimensional inspection, weight inspection and other relevant inspection items specified in the relevant standards. The appearance inspection is to inspect whether the marking, surface quality, corrosion traces, color, display clarity, flexibility and reliability of flexible parts of test specimen and other appearance requirements comply with the relevant standards. The structural inspection is to inspect whether the parts structure, electrical assembly, mechanical assembly and other structural requirements comply with the relevant standards. The dimensional inspection is to inspect whether the product dimension, installation dimension, parts dimension, clearance, creepage distance, explosion-proof surface dimension, explosion-proof gap and other dimensional requirements comply with the relevant standards. The weight inspection is to inspect whether the weighing product and the parts with the required weight comply with the relevant standards. 5.2 Inspection method 5.2.1 Appearance inspection and structural inspection Visual inspection method is generally used. In the most favorable viewing distance and appropriate illumination conditions, inspect with naked eyes with normal vision and color resolution. For those with special stringent requirements, inspect with magnifying glass or other measuring instruments. 5.2.2 Dimensional inspection and weight inspection Inspect with qualified measuring instruments. 5.3 Details need to be specified The relevant standards shall specify the following items. a. Details of inspection site and items; b. Criteria for defects; c. Details of inspection instruments (if required). 8.2.3 In the course of the test if there is no insulation breakdown, surface flashover, significant increase of leakage current or sudden drop in voltage and other phenomena, the product is determined qualified. The determination method for surface flashover and leakage current increase shall comply with Annex A of this Standard. 8.3 Details need to be specified The relevant standards sh... ......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.