What is the definition of contact wipe?

The definition of contact wipe refers specifically to the distance of travel after electrical contacts touch each other. This is a crucial concept in electrical systems, particularly in switchgear and relay mechanism design, where the effectiveness of contact engagement impacts the performance and reliability of the equipment.

When contacts are designed, a proper amount of wipe ensures that a solid connection is made, reducing the chance for arcing or oxidation that could degrade the contact surfaces over time. The correct amount of travel prevents issues such as inconsistent contact resistance, which can otherwise lead to overheating or failures in systems under load. This is particularly important in substation operations, where maintaining reliable electrical connections is key to preventing outages and ensuring the safety and efficiency of power distribution.

Understanding contact wipe also allows electricians to diagnose and troubleshoot issues related to contact performance, leading to better maintenance practices and longer-term equipment reliability.