GB/T 12972.4-2008Flexible rubber-sheathed cables for mining purposes - Part 4: Flexible coalcutter cables with individual metallic screens for rated voltages up to 1.9/3.3kV (English PDF)

Foreword

GB/T 12972 "mining rubber flexible cable" is divided into 10 parts.

--- Part 1. General requirements;

--- Part 2. Rated voltage 1.9/3.3kV and below Shearer flexible cables;

--- Part 3. rated voltage of 0.66/1.14kV Shearer shielded monitor enhanced flexible cables;

--- Part 4. Rated voltage 1.9/3.3kV and below Shearer metal shield soft cable;

--- Part 5. rated voltage of 0.66/1.14kV and following mobile rubber soft cable;

--- Part 6. Rated voltage 6/10kV and below the metal shield Flexible cables with monitoring;

--- Part 7. rated voltage 6/10kV and below shielded rubber-sheathed cables;

--- Part 8. Rated voltage 0.3/0.5kV drill cables;

--- Part 9. Rated voltage 0.3/0.5kV light mine mobile rubber soft cable;

--- Part 10. Miner 's cap lamp cords. This section GB/T Part of 412,972.

This Part replaces GB 12972.4-1991 "mining rubber-sheathed cables - Part 4. rated voltage of 0.66/1.14kV Shearer metal Shielded flexible cable. " This section compared with GB 12972.4-1991 main changes are as follows.

--- Name changed to "rated voltage 1.9/3.3kV and below Shearer metal shield soft cable";

--- Increasing the rated voltage 1.9/3.3kV Shearer metal shield soft cable (Excerpts of Table 1);

--- Modify a monitoring line UCPT core structure is UCPTJ type (1991 edition Table 1; Table 1 edition);

--- UCPTJ-0.66/1.14kV cable specifications by the conductor cross-section 16mm² ~ 95mm² to 16mm² ~ 120mm² (1991 edition Table 2; Table 2 edition);

--- Increased UCPT-0.66/1.14kV cable content (Excerpts of Tables 1 and 2);

--- Increased UCPT-1.9/3.3kV cable content (Excerpts of Table 1 and Table 4);

--- Increased UCPTJ-1.9/3.3kV cable content (Excerpts of Table 1 and Table 5);

--- Remove the XJ-30A-type rubber content (1991 version 5.3.1);

--- Power core 35mm² and above the cable core stranding pitch ratio "is not more than 11" to "not more than 9" (1991 edition 5.4.3; 6.4 edition);

--- Remove the insulated core flooding frequency AC voltage test content (this version 5.2.3);

--- Increase the ground wire parallel to the shield 20 °C DC resistance Max (edition 7.1);

--- Cable burning test by the GB/T 18380.1 "cables under fire conditions test - Part 1. single insulated wire or Cable vertical burning test method "to replace the original GB 12666.2" single wire or cable vertical burning test method "(1991 edition Table 4; edition 7.3).

3 Use Characteristics