[Industry 6] Testing of cables and wire harnesses for the heavy machinery and construction equipment industry

Concept of Testing & Inspection

Cable & harness testing requirements and features for the heavy machinery and construction equipment industry

1. Overview

Heavy machinery and construction equipment powerfully support our daily lives. They perform powerful tasks that are difficult to accomplish by human power, such as road paving, construction, agriculture, forestry, and snow removal. They are also used in times of disaster, contributing to lifesaving and quick restoration of life. Heavy machinery and construction equipment, which are indispensable for the safe development of towns and coexistence with nature, require high-quality wiring harnesses.

2. About cables and wire harnesses for the heavy machinery and construction equipment industry

  • ・Wiring harnesses for heavy machinery and construction equipment are similar to those for automobiles. There are main harnesses and sub-harnesses, and they are branched.
  • ・The harnesses are required to have higher output than those of ordinary automobiles, and harnesses are needed to safely control the power.
  • ・It is estimated that unmanned remote-controlled heavy machinery & construction equipment, which is expected to be introduced in the future, will require even more complex and higher quality cables.
  • ・The main harness requires about 4,000 testing points, and the sub-harness requires about 200 points.
  • ・As in the automotive industry, clamps and retainers are mounted on the cables.
  • ・In the case of mass-produced products, testing is performed on a jig board with actual dimensions.
  • ・Testing is performed by approaching the target with a movable wagon-type tester.

3.Cable & harness testing for the heavy machinery & construction equipment industry

  • ・Wiring and resistance testing are conducted.
  • ・In many cases, resistors, diodes, and capacitors are mounted, which can be tested smoothly with customization of our testers.
  • ・Electrical testing is required to determine whether clamps and retainers are mounted or not by using fixtures.
  • ・High-voltage testing (withstand voltage/insulation) is performed on cables that are exposed to harsh environments. Recently, demand for momentary disconnection testing is also increasing.
  • ・Progressive testing is also available in a customized version, in which the test is conducted while inserting the connector into the fixtures.
  • ・CAD information can be converted to prepare cable testing data.
  • ・If portability is required, harness testers are stored in a wagon rack.
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