Drill Cables MZ-0.3/0.5kV MT/T 818.8-2009 for Mining Purpose

Drill Cables MZ-0.3/0.5kV MT/T 818.8-2009 Manufacturing Standard for Mining Purpose for Colliery Electrical Connection of Drills with MA Certificate

Application

Drill Cables MZ-0.3/0.5kV MT/T 818.8-2009 is intended for electrical connection of drills with rated voltage up to 0.3/0.5kV for colliery.

Manufacturing standard

MT/T 818.8-2009

Service Property Parameter

1. Rated voltage U0/U is 0.3/0.5kV.
2. The max,temperature of conductor in normal operation is 65℃.
3. The minimum-bending radius of cable is 6 times of cable diameter.

Type & Description

Type Description
MZ-0.3/0.5kV Drill cables for mining purposes
MZP-0.3/0.5kV Drill cables with screens for mining purposes

Structural Sketch

Main Technical Indexes

1. 20℃ D.C conductor resistance shall comply with thestipulation of GB/3956.
2. Insulation resistance of power core should be not lessthan 160MΩ·km.
3. Voltage test: The cable should pass voltage test of A.C. 2kV lasted 5 min, No breakdown of the insulation shall occour.
4. Flame retardance test: The methods of test and requirements shall be those specified in MT386.

Specifications & structure size
No.of cores x section area(mm²) Conductor structure Nominal thickness(mm) Outer diameter of cable(mm) Weight for reference kg/km Ampacity at 20℃ (A)
Power core Earth core Control core Strands/Diameter Power core Insulation Sheath MZ-0.3/0.5kV MZP-0.3/0.5kV MZ-0.3/0.5kV MZP-0.3/0.5kV MZ-0.3/0.5kV MZP-0.3/0.5kV
3×2.5 1×2.5 77/0.20 1.0 3.5 17.7~19.4 19.5~21.5 565 621 25 25
3×4 1×4 126/0.20 1.0 3.5 19.1~21.0 21.0~23.1 679 735 35 35
3×2.5 1×2.5 1×2.5 77/0.20 1.0 3.5 18.9~20.8 21.1~23.2 640 696 25 25
3×4 1×4 1×4 126/0.20 1.0 3.5 20.5~22.6 22.8~25.1 775 837 35 35

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