About Power distribution diagram of trolley mining rock drill
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6 FAQs about [Power distribution diagram of trolley mining rock drill]
Why do mines use a trolley system?
Trolley systems are advantageous for mines where there is a big difference between diesel and electricity costs. For example, a power plant may have its own mine, or a mine may have its own power plant. In such cases, the mines want to run the trucks on trolley as power is much cheaper for them.
Can a mine run a truck on a trolley?
For example, a power plant may have its own mine, or a mine may have its own power plant. In such cases, the mines want to run the trucks on trolley as power is much cheaper for them. Trolley systems for most mining haul trucks are installed for uphill hauls. On the downhill haul, the energy is wasted in the grid resistors.
What are the characteristics of underground mine power distribution systems?
Underground mine power distribution systems have three key characteristics: 1) Power enters the mine through insulated cables in shafts or entries and terminates in disconnect switches within 500 feet to allow for emergency power removal.
What are the components of a trolley system?
The trolley system consists of an AC supply, traction substation (s), rectifier (s) and the associated control and protection systems, the overhead catenary system with poles and lines, and the pantograph mounted on the truck.
How do truck trolley systems work?
Truck trolley systems, which simply substitute electricity for diesel fuel, may offer another avenue for further advancement. Instead of generating electricity from the diesel engine and the electric generator on the truck, it’s sourced from a dedicated substation and transmitted via an overhead catenary to the drive motors on the truck.
What is the trolley concept?
Trolley-assist truck haulage is a haulage system that utilises diesel-electric haul trucks and then directs grid-based electrical power directly to the truck via an overhead catenary or “trolley-line” in much the same way as a city tram. Illustration from Siemens is given below.