Overhead Crane Electrical Components

Rewiring the electrical parts within a crane or hoist presents an opportunity to modernize your equipment to improve performance on a budget.

Overhauling your drive, interrupt, and switch systems can power your equipment at a fraction of the cost of buying new machinery.

Traveling cranes require circuit breakers, transformers, variable frequency drives, and surge suppressors, among many other components.

All electrical components for cranes meet industry standards set by the Crane Manufacturers Association of America (CMAA), formerly known as the Electric Overhead Crane Institute (EOCI).

Overhead crane power supply

Reliable and dynamic cable management is one of the greatest challenges in modern crane technology. While the components must be modular, they should also be consistently easy to install, low maintenance, and cost-effective.

Engineers often turn to two power supply variants to try and meet these demands: festoons and energy chains. ­

Which solution is best for your crane application? Read this tech talk and get a full understanding of the differences between the two technologies.

This section regulates voltage, cabling, design, and construction of pendant controls to protect lifting equipment operators and other personnel from electrical shock.

These specifications support OSHA, which lays out employers’ responsibilities to provide employees a workplace that minimizes the risk of arc-flash and other electrical hazards

Electrical Equipment

• Wiring and equipment shall comply with subpart S of this part.
• The control circuit voltage shall not exceed 600 volts for a.c. or d.c. current.
• The voltage at pendant push buttons shall not exceed 150 volts for a.c. and 300 volts for d.c.
• Where multiple conductor cable is used with a suspended pushbutton station, the station must be supported in some satisfactory manner that will protect the electrical conductors against strain.
• Pendant control boxes shall be constructed to prevent electrical shock and shall be clearly marked for identification of functions.