Flexible Mining Power Cables Rated for 1140V: HoldMine-KGESHm, HoldMine-KGETSHm (кабель КГЭТШм)

Introduction

Flexible mining power cables are essential for the safe and efficient operation of mobile equipment in underground mining.

The HoldMine-KGESHm and HoldMine-KGETSHm cables meet the strict requirements of state standard GOST 31945-2012.

These cables are rated for voltages up to 1140V and frequencies up to 50Hz for primary conductors and 220V for auxiliary conductors.

Structural Elements

Current Carrying Conductor (Токоведущий проводник): Made of copper, these conductors meet flexibility class 5 as per GOST 22483.

Auxiliary Conductors (Вспомогательные проводники): Copper with reinforced sheaths made of iron wires for enhanced durability.

Insulation (Изоляция): Heat-resistant rubber compound with an EPR basis for both main and auxiliary conductors.

Screen (Экран): Main conductors are shielded with electrically conductive separable rubber, ensuring minimal electrical interference.

Earthing Conductor (Заземляющий проводник): Split and wrapped in the insulation of auxiliary conductors, made from copper.

Combined Elements (Комбинированные элементы): Auxiliary and earthing conductors are spaced between the main conductors for optimal performance.

Inner Sheath (Внутренняя оболочка): Constructed from flame-retardant, oil-resistant rubber for safety and durability.

Armor/Earth (Броня/Заземление): Twisted strands of copper and steel wires, vulcanized between inner and outer sheaths for added strength.

Outer Sheath (Наружная оболочка): Made of oil-resistant rubber with increased resistance to abrasion and tear.

Technical Specifications and Application

These cables are designed for connecting mobile equipment in underground mining, suitable for both moderate and tropical climates.

Their operating temperature ranges from -30°C to 55°C. They can handle a stretching force per 1mm² of total cross-section of all conductors not exceeding 19.6 N (2.0 kgf).

The continuous operating temperature of current carrying conductors should not exceed 90°C. The minimum cable bend radius during installation and operation is 5D of the cable.

Electrical Resistance (Электрическое сопротивление):

Insulation for 1km of the cable at 1.14 kV: at least 100 MΩ.

Insulation for 1km of the cable at 3.3 kV and 6 kV: at least 200 MΩ.

Belt cable screen resistance: not exceeding 1.5 kΩ.

Reduction of Twisting Lay Ratio (Уменьшение шага скрутки): Auxiliary conductors' twisting lay ratio is reduced from 8 to 6 diameters over the stranded core, improving flexibility.

Cable Construction Options (Опции конструкции кабеля): Includes auxiliary conductors of rated cross-section 6mm² and configurations with 6 primary and 7 auxiliary conductors.

Operational Reliability (Надежность эксплуатации): Enhanced by an increased number of cycles in bending tests with a reduced roller diameter.

Shielding (Экранирование): Auxiliary conductors are shielded with rubber of increased hardness, enhancing longitudinal harness and stability.

Twisting Pitch Reduction (Снижение шага скрутки): Increases cyclical strength and reduces conductor voltage in bending, enhancing stability to extension strain.

Compliance and Marking

These cables comply with GOST 31945-2012 requirements. The conductor material is copper, meeting flexibility class 5 as per GOST 22483.

The insulation for both primary and auxiliary conductors is made from heat-resistant rubber.

The primary conductors are shielded with conductive rubber, while the auxiliary conductors' sheath is made from rubber with increased hardness.

The outer sheath is constructed from oil-resistant, flame-retardant rubber.

Environmentally Friendly and High-Durability Solutions

These cables are designed with an emphasis on environmental sustainability and durability.

The environmentally friendly mining cables (экологически чистые шахтные кабели) are manufactured to minimize environmental impact while maintaining high performance.

The high-durability mining cables for quarries (высокопрочные кабели для карьеров) ensure longevity and reliability in harsh quarry environments.

Frequently Asked Questions (FAQ)

What is the main application of these cables?

​These cables are designed for connecting mobile equipment in underground mining, particularly in moderate and tropical climates.

What are the main advantages of these cables?

These cables offer advanced shielding, chemical resistance, and high durability, making them suitable for challenging mining environments.

What are the unique features compared to standard KGESH cables?

The HoldMine-KGESHm and HoldMine-KGETSHm cables feature a reduced twisting lay ratio, improved operational reliability, and enhanced shielding for auxiliary conductors.

Reduction of Twisting Lay Ratio (Уменьшение шага скрутки): Auxiliary conductors' twisting lay ratio is reduced from 8 to 6 diameters over the stranded core, improving flexibility.

Cable Construction Options (Опции конструкции кабеля): Includes auxiliary conductors of rated cross-section 6mm² and configurations with 6 primary and 7 auxiliary conductors.

Operational Reliability (Надежность эксплуатации): Enhanced by an increased number of cycles in bending tests with a reduced roller diameter.

Shielding (Экранирование): Auxiliary conductors are shielded with rubber of increased hardness, enhancing longitudinal harness and stability.

Twisting Pitch Reduction (Снижение шага скрутки): Increases cyclical strength and reduces conductor voltage in bending, enhancing stability to extension strain.

Conclusion

The HoldMine-KGESHm and HoldMine-KGETSHm flexible mining power cables provide robust and reliable solutions for underground mining operations.

With features such as advanced shielding (современное экранирование), chemical resistance (химическая стойкость), and high durability (высокая прочность), these cables ensure optimal performance and safety in challenging environments. Their compliance with stringent standards and enhanced design elements make them an excellent choice for powering mobile mechanisms and machines in mining applications.

For mining projects requiring dependable and flexible power solutions, these cables offer exceptional value and reliability.

For more information or to request a quote, please contact our sales team.

Note: This is just part of the standard parameters of our products. Please contact our Engineer if you need more. And the information contained within this webpage is for guidance only and is subject to change without notice or liability. All dimensions and specifications are nominal and are subject to normal manufacturing tolerances. All pictures shown are for illustration purposes only. The actual product may vary. All the information is provided in good faith and is believed to be correct at the time of publication.