4 Types of Crane Power Supply Lines for Overhead Cranes


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Joint-free tight wire - one type of crane power supply line

Joint-free tight wire (6mm²-35mm²)- solid copper conductors

General features: Safe, stable, no-joint (except the power interface), super-compact, easy to install, economical.

Suitable for single girder overhead crane and other small power cranes. Usually ampacity ≤90 amps, total length≤100m

Detailed information:

  • Continuous, joint-free conductors, shipped on a roll. Small space requirements of installation.
  • Current collector is made by special materials and it slides smoothly and fast with low noise.
  • Bending radius of installation can reach 750mm
  • Check more on joint free seamless wire crane power supply line.

Single conductor slide wire - one type of crane power supply line

Single conductor slide wire (200-2000 amps) - aluminum alloy conductors

  • Can be used for most crane needs, high current, long distance power supply preferred.
  • Indoor& outdoor
  • Convenient maintenance and low maintenance cost.
  • High temperature environment can be equipped with heat resistance insulator covering.
  • Can provide power input points at any location
  • More on single conductor slide wire

Festoon cable system - one type of crane power supply line

Festoon cable system (C type steel track)

Geneal description:

  • C type steel track size range: C32、C30、C40、C63
  • Festoon cable size range: 6mm²-70mm²

Applications of festoon cable

  • Can be used for overhead/gantry crane, electric trolley bus bar system.
  • Can work normally indoor, dusty, large temperature difference environment. Low environmental requirements, smooth travelling with high speed.
  • Can be equipped with flat or round cable.
  • More on crane power supply festoon cable system.

Tri-Bar/Four-Bar slide wire-- one type of crane power supply line

Tri-Bar/Four-Bar slide wire- solid copper conductor (10mm²-70mm²)

  • Mainly used for small power cranes.
  • Mainly used in power plants, steam workshops and etc.

Tri-Bar/Four-Bar slide wire-

Article by Bella ,who has been in the hoist and crane field since 2016. Bella provides overhead crane & gantry crane consultation services for clients who need a customized overhead travelling crane solution.Contact her to get free consultation.


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  • Main Specifications - Capacity: 0.5–550 tons | Span: up to 40m | Speed: 0.8–12 m/min | Duty: A3–A7 | Power: 380–690V, 50/60Hz | Control: pendant/remote/cabin
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  • Crane type:_____ . (e.g., overhead crane, gantry crane, jib crane)
  • Max weight to lift:_____ tons. (e.g., 2t, 5t, 10t, 20t, 50t)
  • Lifting height:_____ m. (How high does the hook need to reach?
  • Workshop width (span):_____ m . (Distance between the two crane rails)
  • Travel distance:_____ m . (How long does the crane need to move along the runway?)
  • Control type:_____. (Pendant / remote / cabin Control)
  • Power supply:_____. (Local voltage & frequency – e.g., 380V, 50Hz, 3-phase)
  • What will it be used for?_____ (e.g., steel fabrication, concrete products, mold handling, general manufacturing, etc.)
  • Any special requirements?_____ (e.g., extreme temperature, dusty or explosive environment, special paint color, etc.)

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