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The largest converter on a crane hoist in Slovakia:Two-motor hoist of a port crane

Two-motor port-crane hoist (65 t) with a VQFREM 400 200 converter

Partner: Port, Slovakia

Construction period: 2007 | Country: Slovakia

Two-motor hoist of a port crane

Customer challenge

The hoist of a 65 t port gantry crane for unloading containers from ships: a VQFREM 400 200 converter (218 kVA, briefly up to 435 kVA for up to 10 s) for the high dynamics of this demanding drive.

VONSCH solution - turnkey

VONSCH products supplied
VQFREM 400

The port gantry crane has a 65 t capacity and is used to unload shipping containers from ships. The VQFREM 400 200 frequency converter used, with a nominal power of 218 kVA that can briefly be raised to 435 kVA for up to 10 s, ensures the high dynamics of this demanding drive. This is the largest known power of a frequency converter used on a crane hoist in Slovakia.

Solution diagram
Scope of delivery (technical specification)
  • VQFREM 400 200 frequency converter (218 kVA, briefly up to 435 kVA)
  • Special software for the dynamic hoist
  • Start-up and commissioning

Project in numbers

218 kVA
converter (peak 435 kVA)
65 t
crane capacity
VQFREM 400 200
frequency converter

What the customer gained

  • High hoist dynamics — fast, precise container handling
  • Short-term power boost up to 435 kVA — handles peak loads
  • The largest converter on a crane hoist in Slovakia — proven reliability
  • Precise control of the two-motor hoist

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.