Mobile flexible cable with rated voltage of 0.66/1.14kV and below_Coal Mine Cable_Products_Anhui Huahai Special Cable Group Co., Ltd.

Mobile flexible cable with rated voltage of 0.66/1.14kV and below

This product is designed according to MT818-2009 "Cables for Coal Mine", MY-0.38/0.66, MYP-0.66/1.14 meet the performance index of MT818.5-2009.

range

This product is suitable for rubber insulated rubber sheathed flexible cable for coal mine mobile equipment with rated voltage U₀/U below 0.66/1.14kV.

Type

Cable type is shown in Table 1.

Table 1

model	name	use
MY-0.38/0.66	Mobile rubber flexible cable for coal mine	Power connection for various underground coal mining equipment with rated voltage of 0.38/0.66kV
MY-0.60/1.14	Mobile shielded rubber sheathed flexible cable for coal mine	Power connection for various underground coal mining equipment with rated voltage of 0.66/1.14kV

The cable can be divided into single core and 4-core (3+1) according to the number of cores. The structure of the 4-core cable is shown in the figure below.

specification

Cable regulations shall comply with Table 2, Table 3, and Table 4.

Table 2

Core number X conductor nominal cut mm²	Nominal thickness mm		Cable outer diameter mm
Power core	Power core insulation	jacket	MY-0.38/0.66
1x4 1x6 1x10 1x16 1x25 1x35 1x50 1x70 1x95 1x120 1x150 1x185 1x240 1x300 1x400	1.4 1.4 1.6 1.6 1.8 1.8 2.0 2.0 2.2 2.2 2.4 2.4 2.6 2.6 2.8	1.5 1.6 1.8 1.9 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.5 3.6 3.8	8.0~10.0 9.0~12.0 11.0~14.0 12.0~15.0 14.0~17.5 16.0~19.5 18.5~22.5 21.0~25.0 23.5~28.5 25.5~29.5 28.0~33.0 30.5~35.5 34.0~39.5 37.0~43.0 42.0~48.0

table 3

Number of cores x conductor nominal cut mm²		Nominal thickness mm		Cable outer diameter mm
Power core	Ground core	Power core insulation	jacket	MY-0.38/0.66
3x4 3x6 3x10 3x16 3x25 3x35 3x50 3x70	1x4 1x6 1x10 1x10 1x16 1x16 1x16 1x25	1.4 1.4 1.6 1.6 1.8 1.8 2.0 2.0	3.5 3.5 4.0 4.0 4.5 4.5 5.0 5.0	19.0~22.5 21.0~25.5 25.0~30.0 27.5~32.0 32.5~37.5 35.5~41.0 41.5~47.5 46.0~53.0

Table 4

Number of cores x conductor nominal cut mm²		Nominal thickness mm		Cable outer diameter mm
Power core	Ground core	Power core insulation	jacket	MY-0.66/1.14
3x10 3x16 3x25 3x35 3x50 3x70 3x95	1x10 1x10 1x16 1x16 1x16 1x25 1x25	1.8 1.8 2.0 2.0 2.2 2.2 2.4	4.5 4.5 5.0 5.0 5.5 5.5 6.0	30.0~35.0 32.5~37.5 37.5~43.0 40.5~46.5 46.5~53.0 51.0~58.0 57.5~65.0

skills requirement

conductor

The single core of the conductor is allowed to be tinned, and the guide should be in accordance with 5.1 of MT818.1-2009. The conductor surface may be provided with an isolation layer.

Note: Discoloration or embrittlement of the barrier layer after vulcanization is not evaluated.

insulation

The power cable core shall be specified in accordance with the XJ-30A type in GB/17594.8-1987, and the tensile strength shall not be less than 6.5 MPa. MY-0.38/0.66 type cable ground core conductor, such as extruded insulation, performance should meet the requirements of XJ-30A type in GB/T7594.8-1987, tensile strength should not be less than 6.5MPa. The insulation thickness is specified in Table 2, Table 3 and Table 4; the insulation resistance of the cable at 20 °C shall comply with the requirements of Table 5.

table 5

Power wire core nominal cross section mm²	Minimum insulation resistance MΩ·km at 20°C	Power wire core nominal cross section mm²	Minimum insulation resistance MΩ·km at 20°C	Power wire core nominal cross section mm²	Minimum insulation resistance MΩ·km at 20°C
4 6 10 16 25	600 450 400 350 300	35 50 70 95 120	250 250 200 200 200	150 185 240 300 400	180 180 160 140 140

Cable core

The position of the ground core should be in accordance with the provisions of 5.4.4b) in MT818.1-2009. The twisted pitch ratio of the multi-core cable core: the power core cross section 4 ~ 16mn² should not More than 12, the power core core section 25 ~ 400mm ² should be no more than 14.

jacket

If the cable has an inner sheath, the rubber sheath shall not be lower than the XH-03A type specified in GB/T7594.7-1987. The outer sheath of the cable shall comply with the XH03A type specified in GB/T7594.7-1987, and the tear strength shall not be less than 5N/mm. The thickness of the outer sheath of the cable shall be in accordance with the provisions of MT818.1-2009 and Tables 2, 3 and 4 of this part.

Working conditions

The rated voltage U₀/U is 0.38/0.66 and 0.66/1.14kV, the long-term operating temperature of the cable conductor is 90 °C, and the minimum bending of the cable is 6 times the diameter of the cable. The ground core of the cable should be well grounded.

prev_page：Shearer metal shielded flexible cable with rated voltage of 1.9/3.3kV

next_page：Mobile light flexible cable for coal mine