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MT 210-1990: Electrical and electronic products for coal mine - Communication, testing and control - Basic test method
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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
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 fall3 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.4 Test conditions
4.1 Environmental conditions for test In addition to the environmental tests or otherwise specified in the relevant standards, the test shall be carried out in the following environmental conditions. 4.2 Power supply 4.2.1 In addition to the power fluctuation adaptability test and otherwise specified the relevant standards, the power supply shall comply with the provisions of this clause. 4.2.2 AC supply voltage shall be. 4.2.3 DC supply voltage shall be. 4.3 Other test conditions Unless otherwise specified in the relevant standards, the test conditions shall comply with.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. 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. 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.6 Performance indicator test
6.1 Test requirements 6.1.1 The test method must be able to fully assess the product performance and indicators mentioned in the relevant technical requirements. 6.2 Test method Product standards shall be based on national, industry standards test methods. The contents shall include test equipment, equipment, test lines, test procedures, test results of the assessment or calculation.7 Insulation resistance detection
7.1 Test requirements 7.1 The test shall be carried out on products installed in the normal working position. If the tested product is installed in the insulation enclosure, the insulation enclosure shall be covered with metal foils, which shall be used as enclosure during the test. 7.1.1 Megohmmeter for measuring insulation resistance shall be selected according to the grade listed in Table 1. 7.2 Test method The Megohmmeter is connected to the measured site at the two ends, and the insulation resistance value is read when the display is stable. During the measurement, it shall ensure reliable contact between the Megohmmeter test pen and the measured sites and enough insulation resistance between the test leads, to get accurate reading. 7.3 Details need to be specified The relevant standards shall specify the following items.8 Power frequency withstand voltage test
8.1 Test requirements 8.1.1 It shall comply with the provisions of 7.1 of this Standard. 8.2 Test method 8.2.1 It may use the circuit program of low-voltage regulating by connecting the test transformer in series with the autotransformer. 8.2.2 The test voltage shall start from the half of the full value and gradually rise to the specified value. The rise time shall not be less than 10 s and shall maintain for 1 min. The voltage shall be gradually reduced to zero after the test. 8.3 Details need to be specified The relevant standards shall specify the following items.9 Water pressure test
9.1 Test requirements 9.1.1 The water pressure test shall be carried out after the parts are finished, and the parts shall be fixed to simulate the actual assembly as much as possible. 9.2 Test method 9.2.1 The water pressure test shall be carried out on the products one by one. 9.3 Details need to be specified The relevant standards shall specify the following items. 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 AdministrationTable 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 fall3 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.4 Test conditions
4.1 Environmental conditions for test In addition to the environmental tests or otherwise specified in the relevant standards, the test shall be carried out in the following environmental conditions. 4.2 Power supply 4.2.1 In addition to the power fluctuation adaptability test and otherwise specified the relevant standards, the power supply shall comply with the provisions of this clause. 4.2.2 AC supply voltage shall be. 4.2.3 DC supply voltage shall be. 4.3 Other test conditions Unless otherwise specified in the relevant standards, the test conditions shall comply with.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. 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. 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.6 Performance indicator test
6.1 Test requirements 6.1.1 The test method must be able to fully assess the product performance and indicators mentioned in the relevant technical requirements. 6.2 Test method Product standards shall be based on national, industry standards test methods. The contents shall include test equipment, equipment, test lines, test procedures, test results of the assessment or calculation.7 Insulation resistance detection
7.1 Test requirements 7.1 The test shall be carried out on products installed in the normal working position. If the tested product is installed in the insulation enclosure, the insulation enclosure shall be covered with metal foils, which shall be used as enclosure during the test. 7.1.1 Megohmmeter for measuring insulation resistance shall be selected according to the grade listed in Table 1. 7.2 Test method The Megohmmeter is connected to the measured site at the two ends, and the insulation resistance value is read when the display is stable. During the measurement, it shall ensure reliable contact between the Megohmmeter test pen and the measured sites and enough insulation resistance between the test leads, to get accurate reading. 7.3 Details need to be specified The relevant standards shall specify the following items.8 Power frequency withstand voltage test
8.1 Test requirements 8.1.1 It shall comply with the provisions of 7.1 of this Standard. 8.2 Test method 8.2.1 It may use the circuit program of low-voltage regulating by connecting the test transformer in series with the autotransformer. 8.2.2 The test voltage shall start from the half of the full value and gradually rise to the specified value. The rise time shall not be less than 10 s and shall maintain for 1 min. The voltage shall be gradually reduced to zero after the test. 8.3 Details need to be specified The relevant standards shall specify the following items.9 Water pressure test
9.1 Test requirements 9.1.1 The water pressure test shall be carried out after the parts are finished, and the parts shall be fixed to simulate the actual assembly as much as possible. 9.2 Test method 9.2.1 The water pressure test shall be carried out on the products one by one. 9.3 Details need to be specified The relevant standards shall specify the following items. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
