This standard is applied with MT 209 General Technical Requirements of Electric and Electronic Products Used for Communication, Detection and Control in Coal Mine and MT 211 Quality Inspection Rules of Electric and Electronic Products Used for Communication, Detection and Control in Coal Mine.
1 Subject Content and Application Scope
1.1 This standard specifies the basic test methods for electric and electronic products used for communication, detection and control in coal mine.
1.2 This standard is applicable to:
a. Communication and signal systems and equipment in coal mine;
b. Monitoring, control and regulating systems, equipment and instruments for infrastructures, production process and environment in coal mine;
c. Measurement and control equipment and instruments for electromechanical equipment in coal mine.
2 Normative References
GB 531
Rubber—Shore A Hardness—Hardness Test Method
GB 998
Low Voltage Apparatus—Basic Testing Method
GB 1410
Methods of Test for Insulation Resistance, Volume Resistivity and Surface Resistivity of Solid Electrical Insulating 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—Test B: Method of Test at Elevated Temperature
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 Test Method
GB 2423.8
Basic Environmental Testing Procedures for Electric and Electronic Products—Test Ed: Free Fall Test Method
GB 2423.10
Basic Environmental Testing Procedures for Electric and Electronic Products—Test Fc: Vibration (Sinusoidal) Test Method
GB 3836.2
Electrical Apparatus for Explosive Atmospheres—Flameproof Electrical Apparatus d
GB 3836.4
Electrical Apparatus for Explosive Atmospheres—Intrinsically Safe Circuits and Electrical Apparatus J
GB 4942.2
Degrees of Protection Provided by Enclosures for Low-voltage Apparatus
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
General Technical Requirements of Electric and Electronic Products Used for Communication, Detection and Control in Coal Mine
3 General Requirements
3.1 For the assessment items specified in appraisal inspection, delivery inspection and type inspection of electric and electronic products used for communication, detection and control in coal mine, the test methods shall comply with the relevant requirements of this standard.
3.2 The standard concerned shall specify the adopted test methods, severity and test sequence (if concerned) according to product type and service environment conditions.
3.3 The standard concerned shall specify the requirements for performance index and other items concerned of test sample in the test process or after the test according to MT 209.
3.4 Provided that the conditions are infeasible for the complete machine test of large products, the standard concerned shall specify the critical components to be tested.
1 Subject Content and Application Scope
2 Normative References
3 General Requirements
4 Test Conditions
5 General Inspection
6 Performance Index Test
7 Testing of Insulation Resistance
8 Power-frequency Voltage Withstand Test
9 Hydraulic Test
10 Test for Adaptive Capacity of Power Supply Fluctuation
11 Measurement of Surface Temperature
12 Thermal Stability Test
13 Thermal Shock Test
14 Impact Test of Shell
15 Drop Test
16 Protective Performance Test of Shell
17 Aging Test of Rubber Materials
18 Clamping Test on Lead-in Device
19 Seal Performance Test and Mechanical Strength Test of Lead-in Device
20 Connector Torsion Test
21 Cable Pull-out Test
22 Determination of Surface Insulation Resistance
23 Operating Environment Temperature Test
24 Storage Environment Temperature Test
25 Vibration Test
26 Impact Test
27 Transportation Test
28 Damp Heat Test
29 Anti-interference Test
30 Reliability Test
31 Strength Test and Explosion-proof Performance Test
32 Intrinsic Safety Spark Test
Annex A Inspection Method for Surface Flashover and Leakage Current Increment in Voltage Withstand Test (Supplementary)
