Case Study

Remote direct start for excavator induction motors

How the DPR-01 starting device allowed a quiet start from a distance, without electric lowering substation

Mining

From crushing to transport, solutions with great experience of the processes

Project Data

FLEXIBILITY

Displacement

harvesting fronts

The remote start allowed the extraction fronts to be moved without problems

PRODUCTIVITY

Improvements

observed in practice

Less time spent with operational logistics and less expense with auxiliary facilities

SECURITY

Reduction

of risks

The remote start, without construction of substations, reduced the chances of accidents

Context and Challenges

CSN - Mineração Casa de Pedra, in its facilities in Congonhas-MG, needed to start directly the machines operating in its open pit mine, which were at great distances from the load centers. The solution adopted until then was the construction of lowering substations as close as possible to the extraction fronts, but this required large investments in the facilities and in their relocation, since the extraction fronts were constantly advancing. Solving the issue, therefore, was a challenge:

  1. Develop a way to meet machines over long distances
  2. Caring for this form to be safe and economical

Solutions Used and Equipment Provided

Technical studies were made by CSN and SENIOR Engenharia professionals that resulted in the design of starting devices acting via serial capacitors.

SENIOR, as a supplier of industrial equipment, manufactured the devices, which had the expected result and started to be used regularly.

Experts

Specialist in Electrocentres, Electrical Panels and Substations

Carlos Alberto Viegas Gonçalves

Specialist in Electrocentres, Electrical Panels and Substations

Ernesto Lima

Awards

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Whitepapers

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Remote direct start for excavator induction motors

How the DPR-01 starting device allowed a quiet start from a distance, without electric lowering substation

January 25, 2021

published by

Specialist in Electrocentres, Electrical Panels and Substations

Carlos Alberto Viegas Gonçalves

published by

Specialist in Electrocentres, Electrical Panels and Substations

Ernesto Lima

FLEXIBILITY

Displacement

harvesting fronts

The remote start allowed the extraction fronts to be moved without problems

PRODUCTIVITY

Improvements

observed in practice

Less time spent with operational logistics and less expense with auxiliary facilities

SECURITY

Reduction

of risks

The remote start, without construction of substations, reduced the chances of accidents

CSN - Mineração Casa de Pedra, in its facilities in Congonhas-MG, needed to start directly the machines operating in its open pit mine, which were at great distances from the load centers. The solution adopted until then was the construction of lowering substations as close as possible to the extraction fronts, but this required large investments in the facilities and in their relocation, since the extraction fronts were constantly advancing. Solving the issue, therefore, was a challenge:

  1. Develop a way to meet machines over long distances
  2. Caring for this form to be safe and economical

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