REFERENCE · CONVEYORS · MINING
A loaded ropeway returns energy to the grid on the way down.Cargo ropeway drive with energy recovery
QUATROFREM 400 090 regenerative converter on a cargo-ropeway drive at a limestone plant
Partner: Limestone plant
Customer challenge
The cargo ropeway transports mined limestone. On the loaded descent, the energy is normally wasted in braking resistors — the task was to put this energy to use while not burdening the grid with higher harmonics.
VONSCH solution - turnkey
VONSCH products supplied
QUATROFREM 
Scope of delivery (technical specification)
- QUATROFREM 400 090 regenerative frequency converter
- Power and control cables
- Installation and commissioning
- Initial and final diagnostics (power, cos φ, harmonic distortion)
Project in numbers
90 kW
QUATROFREM 400 090 converter
~60 kW
regeneration into the grid
cos φ = 1
clean sinusoidal input
What the customer gained
- Energy from the loaded run is returned to the grid (up to ~60 kW) instead of being wasted in resistors
- Clean input and supply — cos φ = 1, fundamental harmonic only
- Room to increase ropeway speed and throughput without changing the converter
- Turnkey solution from Slovakia — design, installation, commissioning, diagnostics; service response within 8 h
Why VONSCH
We reduce the risk of a wrong decision - from design to service you deal with a single partner who stands behind the solution.
- A manufacturer, not a reseller - we develop and build power electronics in Brezno, Slovakia.
- A turnkey solution - one responsibility from design through installation to commissioning.
- Service and spare parts from Slovakia throughout the entire lifetime of the equipment.