Coal Mine Power Cable 1. Implementation Standard: MT818.11-1999
2. Main use of the product This product is suitable for the transmission and distribution circuits for coal mines with AC rated voltage of 10KV and below.
3, the use of conditions 3.1 operating voltage: rated voltage U0/U is 8.7/10KV
3.2 The maximum long-term allowable operating temperature of the cable conductor is 70°C. 3.3 When the short-circuit (maximum duration does not exceed 5S), the maximum temperature of the XLPE conductor does not exceed 160°C, and the polyethylene does not exceed 140°C.
3.4 The ambient temperature for laying cables should not be lower than 0°C.
4, the main technical requirements 4.1 cable according to GB6995-86 "wire and cable identification mark method" for identification, each specification cable is required to perform color separation, and spray on the cable jacket specification model, voltage level and quantity 4.2 cable line The core is a copper core conductor: the conductor meets GB3953-83 "electrical round copper wire"
4.3 The cable uses cross-linked polyethylene, polyvinyl chloride and other materials, in line with MT818.11-1999 standards 4.4 Test electrical value is U0 below 3.6KV 2.5U0+2/5min, 3.6KV and above is 3.5U0/5min not hit When wearing 4.5 at 20 °C insulation resistance constant PVC 36.7MΩ · KM, cross-linked polyethylene is not assessed.
4.6 Partial Discharge Test: When AC voltage 1.5U0 is applied to the cable, the discharge capacity of PVC insulated cable shall be no more than 40PC, and the discharge capacity of cross-linked polyethylene insulated cable shall not be greater than the insulation and sheath thickness of 20PC4.7 cable. And flame retardant characteristics are in line with the MT818.11-1999 standard coal mine shield monitoring soft cable 1, the implementation of the standard: MT818.6-1999
2. Main use of the product This product is suitable for the power connection of underground mobile transformers and similar equipment.
3, the use of conditions 3.1 operating voltage: rated voltage U0/U is 8.7/10KV
3.2 The maximum long-term allowable operating temperature of the cable conductor is 70 °C
3.3 There is no explosive gas or flammable gas in the ambient air.
3.4 Try to avoid oil pollution and ozone gas contact.
3.5 The ambient temperature when laying cables should not be lower than 0 °C.
4, the main technical requirements 4.1 cable according to GB6995-86 "wire and cable identification mark method" for identification, each specification cable is required to perform color separation, and spray on the cable jacket specification model, voltage level and quantity 4.2 cable line The core is a copper core conductor: the conductor meets GB3953-83 "electrical round copper wire."
4.3 Insulation rubber materials using ethylene-propylene rubber as the base material, its performance should be consistent with the XJ-30A type specifications in GB7594.8, the tensile strength of not less than 6.5mpa, the thickness should be in line with the MT-818.1-1999 standards, ground The core is extruded and covered with a semiconductive layer.
4. Insulation resistance at 420°C The main wire core should be greater than 500MΩ·KM, and the monitoring wire core should be greater than 5MΩ·KM
4.5 Test voltage is 21KV/30min without breakdown 4.6 Partial discharge test: When AC voltage 1.5U0 is applied to the cable, the cable discharge capacity is not more than 40PC
4.7 The flame retardancy of the finished cable can meet the requirements in the MT386 standard. Shielded flexible cable for coal mines 1. Execution standard: MT818.5-1999
2. Main application of the product This product is suitable for the connection of various underground coal mining machines and similar equipment power supply. 3. Operating conditions 3.1 Operating voltage: Rated voltage U0/U is 0.66/1.14KV
3.2 The maximum long-term allowable operating temperature of the cable conductor is 70 °C
3.3 The ambient temperature when laying the cable should not be lower than 0 °C, the lower limit of the ambient temperature is -20 °C.
3.4 There is no explosive gas or flammable gas in the ambient air 3.5 Try to avoid oil contamination and ozone gas contact.
4, the main technical requirements 4.1 cable according to GB6995-86 "wire and cable identification mark method" for identification, each specification cable is required to perform color separation, and spray on the cable jacket specification model, voltage level and quantity 4.2 cable line The core is a copper core conductor: the conductor meets GB3953-83 "electrical round copper wire."
4.3 Power core insulation shall comply with the requirements of Type XJ-00A in GB7954.2. The insulation of the control core shall be made of polyfluorinated ethylene propylene or similar properties as specified in GJB733.1. 4.4 Insulation resistance Main line of cores Complies with MT818.2-1999 In the provisions of 5, the control core is greater than 100MΩ·KM
4.5 The test voltage is 3.7KV/5min without breakdown The insulation and sheath of the 4.6 cable are in line with the test requirements in the MT386 standard for the coal drill cable for coal mine 1, the implementation of the standard: MT818.8-1999
2. Main application of the product This product is suitable for the connection of mine electric drill power supply with AC rated voltage of 0.3/0.5KV. 3. Operating conditions 3.1 Operating voltage: Rated voltage U0/U is 0.3/0.5KV
3.2 The maximum long-term allowable operating temperature of the cable conductor is 70 °C
3.3 The minimum bending radius of the cable is 6 times the cable diameter.
3.4 There is no explosive gas or flammable gas in the ambient air 3.5 Avoid contact with oil and ozone gas as much as possible.
4, the main technical requirements 4.1 cable according to GB6995-86 "wire and cable identification mark method" for identification, each specification cable is required to perform color separation, and spray on the cable jacket specification model, voltage level and quantity 4.2 cable line The core is a copper core conductor: the conductor meets GB3953-83 "electrical round copper wire."
4.3 The insulation of the power core and the control core is in accordance with XJ-00A type rubber in GB7954.2 or elastomers in accordance with the requirements of Appendix A of MT818.1-1999 4.4 The insulation resistance at 20°C should be not less than 160MΩ·KM
4.5 The test voltage is 3.0KV/5min without breakdown The insulation and sheath of the 4.6 cable meet the test requirements in the MT386 standard
2. Main use of the product This product is suitable for the transmission and distribution circuits for coal mines with AC rated voltage of 10KV and below.
3, the use of conditions 3.1 operating voltage: rated voltage U0/U is 8.7/10KV
3.2 The maximum long-term allowable operating temperature of the cable conductor is 70°C. 3.3 When the short-circuit (maximum duration does not exceed 5S), the maximum temperature of the XLPE conductor does not exceed 160°C, and the polyethylene does not exceed 140°C.
3.4 The ambient temperature for laying cables should not be lower than 0°C.
4, the main technical requirements 4.1 cable according to GB6995-86 "wire and cable identification mark method" for identification, each specification cable is required to perform color separation, and spray on the cable jacket specification model, voltage level and quantity 4.2 cable line The core is a copper core conductor: the conductor meets GB3953-83 "electrical round copper wire"
4.3 The cable uses cross-linked polyethylene, polyvinyl chloride and other materials, in line with MT818.11-1999 standards 4.4 Test electrical value is U0 below 3.6KV 2.5U0+2/5min, 3.6KV and above is 3.5U0/5min not hit When wearing 4.5 at 20 °C insulation resistance constant PVC 36.7MΩ · KM, cross-linked polyethylene is not assessed.
4.6 Partial Discharge Test: When AC voltage 1.5U0 is applied to the cable, the discharge capacity of PVC insulated cable shall be no more than 40PC, and the discharge capacity of cross-linked polyethylene insulated cable shall not be greater than the insulation and sheath thickness of 20PC4.7 cable. And flame retardant characteristics are in line with the MT818.11-1999 standard coal mine shield monitoring soft cable 1, the implementation of the standard: MT818.6-1999
2. Main use of the product This product is suitable for the power connection of underground mobile transformers and similar equipment.
3, the use of conditions 3.1 operating voltage: rated voltage U0/U is 8.7/10KV
3.2 The maximum long-term allowable operating temperature of the cable conductor is 70 °C
3.3 There is no explosive gas or flammable gas in the ambient air.
3.4 Try to avoid oil pollution and ozone gas contact.
3.5 The ambient temperature when laying cables should not be lower than 0 °C.
4, the main technical requirements 4.1 cable according to GB6995-86 "wire and cable identification mark method" for identification, each specification cable is required to perform color separation, and spray on the cable jacket specification model, voltage level and quantity 4.2 cable line The core is a copper core conductor: the conductor meets GB3953-83 "electrical round copper wire."
4.3 Insulation rubber materials using ethylene-propylene rubber as the base material, its performance should be consistent with the XJ-30A type specifications in GB7594.8, the tensile strength of not less than 6.5mpa, the thickness should be in line with the MT-818.1-1999 standards, ground The core is extruded and covered with a semiconductive layer.
4. Insulation resistance at 420°C The main wire core should be greater than 500MΩ·KM, and the monitoring wire core should be greater than 5MΩ·KM
4.5 Test voltage is 21KV/30min without breakdown 4.6 Partial discharge test: When AC voltage 1.5U0 is applied to the cable, the cable discharge capacity is not more than 40PC
4.7 The flame retardancy of the finished cable can meet the requirements in the MT386 standard. Shielded flexible cable for coal mines 1. Execution standard: MT818.5-1999
2. Main application of the product This product is suitable for the connection of various underground coal mining machines and similar equipment power supply. 3. Operating conditions 3.1 Operating voltage: Rated voltage U0/U is 0.66/1.14KV
3.2 The maximum long-term allowable operating temperature of the cable conductor is 70 °C
3.3 The ambient temperature when laying the cable should not be lower than 0 °C, the lower limit of the ambient temperature is -20 °C.
3.4 There is no explosive gas or flammable gas in the ambient air 3.5 Try to avoid oil contamination and ozone gas contact.
4, the main technical requirements 4.1 cable according to GB6995-86 "wire and cable identification mark method" for identification, each specification cable is required to perform color separation, and spray on the cable jacket specification model, voltage level and quantity 4.2 cable line The core is a copper core conductor: the conductor meets GB3953-83 "electrical round copper wire."
4.3 Power core insulation shall comply with the requirements of Type XJ-00A in GB7954.2. The insulation of the control core shall be made of polyfluorinated ethylene propylene or similar properties as specified in GJB733.1. 4.4 Insulation resistance Main line of cores Complies with MT818.2-1999 In the provisions of 5, the control core is greater than 100MΩ·KM
4.5 The test voltage is 3.7KV/5min without breakdown The insulation and sheath of the 4.6 cable are in line with the test requirements in the MT386 standard for the coal drill cable for coal mine 1, the implementation of the standard: MT818.8-1999
2. Main application of the product This product is suitable for the connection of mine electric drill power supply with AC rated voltage of 0.3/0.5KV. 3. Operating conditions 3.1 Operating voltage: Rated voltage U0/U is 0.3/0.5KV
3.2 The maximum long-term allowable operating temperature of the cable conductor is 70 °C
3.3 The minimum bending radius of the cable is 6 times the cable diameter.
3.4 There is no explosive gas or flammable gas in the ambient air 3.5 Avoid contact with oil and ozone gas as much as possible.
4, the main technical requirements 4.1 cable according to GB6995-86 "wire and cable identification mark method" for identification, each specification cable is required to perform color separation, and spray on the cable jacket specification model, voltage level and quantity 4.2 cable line The core is a copper core conductor: the conductor meets GB3953-83 "electrical round copper wire."
4.3 The insulation of the power core and the control core is in accordance with XJ-00A type rubber in GB7954.2 or elastomers in accordance with the requirements of Appendix A of MT818.1-1999 4.4 The insulation resistance at 20°C should be not less than 160MΩ·KM
4.5 The test voltage is 3.0KV/5min without breakdown The insulation and sheath of the 4.6 cable meet the test requirements in the MT386 standard
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