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Higher performance for Motor Cables by Lütze



Friedrich Lütze GmbH (Germany) - LÜTZE has expanded its portfolio of modern motor supply cables to include much improved low-capacity properties.

The new LÜTZE motor supply cables are optimised in terms of energy efficiency. The low capacitance insulation within the cable ensures there is less power loss as the cables have lower "charging currents". This is a considerable advantage over conventional PVC cables. As a result, more current arrives at the motor. Secondly, much longer cable runs can be implemented. LÜTZE offers special low-capacity cables for fixed and mobile installation, for use with frequency drive motors and for use in power cable chains.

Innovative cable materials and material combinations:
In terms of its Low-Capacity cables, LÜTZE primarily focuses on two material components: XLPE and PP. As an insulation material, XLPE (this is an English abbreviation for networked polyethylene) offers a very low capacity and excellent electrical properties, as well as a high dielectric strength. This property naturally prevents undesirable transfer losses, such as corona discharging. This makes XLPE the ideal premium insulation for LÜTZE, in particular for applications with high voltage peaks and longer cable paths. In the case of permanently installed cables, LÜTZE also uses insulation made of polypropylene (PP) that has a low dielectric constant.

LÜTZE Low-capacity motor supply cables in practice:
LÜTZE has an extensive program of low-capacity motor supply cables to cover all industrial applications.
  • Variable Frequency Drive cables serve as power cables between the speed-controlled drive system and the speed-controlled motor. They are usually permanently installed in cable racks and ducts. We recommend e.g. LÜTZE SILFLEX B XLPE (C) PVC 0.6/1kV.
  • The LÜTZE cable portfolio has a number of control cables for fixed installation, e.g. the LÜTZE SILFLEX N PUR that is equipped with TPE. Alternatively, LÜTZE supply cables with polypropylene insulation which are low-capacity, e.g. the LÜTZE SILFLEX M (C) PVC Servo.
  • LÜTZE supplies motor cables, such as the SUPERFLEX PLUS M (C) PUR SERVO, for mobile applications and for use in power cable chains.
Background information - Capacity and power loss:
Every cable has a certain amount of 'power loss' or capacity. Depending on the structure and material quality, the capacity may be higher or lower. The cable capacity is primarily influenced by the dielectric constant of the material, and also by the structure and thickness of the insulation on the cable. The lower the dielectric constant, the lower the cable capacity. The capacity should be as low as possible for power supply cables to motors with high loads. Low capacity therefore means that the cable acts less like a capacitor, generates less heat and transfers the energy with less loss, i.e. more efficiently.

For more information about the New Motor Cables from Friedrich Lütze GmbH click here.


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