Power line fittings – what is hot-dip galvanized cross arm?

Power line fittings – hot-dip galvanized cross arm is an important power fastener used in the overhead line tower, is the top of the pole transverse fixed Angle iron; The cross arm is used to support the line and lightning line in the overhead line, install insulators and supporting power fittings, and keep a certain safety distance according to the provisions.
Power line fittings – what is hot-dip galvanized cross arm
Classification of cross loads:
According to the use can be divided into: straight cross load; Corner cross arm; Tensioning cross arm.
According to the material can be divided into: iron cross arm; Porcelain crossarm; Synthetic insulated cross arm.
Straight cross load: only consider the vertical and horizontal load of the wire under the normal condition of unbroken line;
Tensioning cross load: it can bear the vertical and horizontal load of the wire, but also the tension difference of the wire;
Corner cross arm: in addition to the vertical and horizontal load of the wire, it will also bear a large single-side wire tension.
Use of cross arm:
Hot-dip galvanized cross arm is installed on the top of the pole about 300mm, the straight cross arm should be installed on the electrical side, corner rod, terminal rod, branch rod cross arm should be installed on the cable side.
Power line fittings – what is hot-dip galvanized cross arm
According to the stress characteristics of different types of hot-dip galvanized cross arm: single cross arm is suitable for straight rod or Angle rod below 15°; Double cross – arms are used for corner bar, tensioning bar, terminal bar and branch bar with Angle above 15 degrees. (Double cross arms are used in some areas)-
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Post time: May-20-2022

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