Gridbox

Mining Truck – Gridbox braking resistors

In opencast and underground mining, raw materials such as coal, gravel, stone, sand, ore and much more are transported away with the help of dump trucks. These trucks are capable of transporting several hundred tons and reach speeds of up to 60 km/h with powerful diesel-electric or all-electric drives.

The electrodynamic braking system converts the generated braking energy into heat. This conversion of electrical energy into thermal energy leads to very high temperatures, which are dissipated into the environment by high-performance fans.

Our Gridbox braking resistors can be used for power loads of up to five megawatts and ensure the safe and efficient dissipation of excess braking energy.

Power range

up to 5 MW

Cooling

Our Gridbox braking resistors are equipped with axial, radial or even double-radial high-performance fans depending on the customer-specific installation situation, requirements and application.

Protection class

IP 21 acc. to DIN 60529

Mounting height

The braking resistors are designed for use at altitudes of up to 5,500 m above sea level.

Environmental conditions

  • Extreme requirements for shock and vibration loads
  • Special environmental requirements (sand, dirt, dust, moisture)
  • Low-maintenance and low-wear design

 

Examples of grid boxes

Our grid boxes can be customised to your individual requirements.

1.2 MW GridboxCharacteristics
• Dump truck payload: 90 t
• Braking power: 2 x 600 kW
• Fan design: Axial
• Operating altitude: up to 4,800 m above sea level
• Resistor design: 3PQ4-system (up to 850 °C)
• Paint: Black-grey
2.8 MW GridboxCharacteristics

• Dump truck payload: 240 t
• Braking power: 4 x 700 kW
• Fan design: 2-channel cooling - double radial
• Operating altitude: up to 5,500 m above sea level
• Resistor design: EN-system (over 600°C)
• Paint: Signal white



Do you have any questions?

Click through our brochure Mobility or contact us directly. We look forward to hearing from you.

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