Mitigating Electrical Risk While Swapping Energized Equipment

Mission-critical applications require continuity of power while inserting or removing modules in low-voltage electrical equipment, such as UPSs and PDUs. This type of work poses a potential risk to workers and requires electrical safe work practices. There are ultimately three parties with their own contributions to protecting workers. This paper describes these three parties, their contributions for electrical safe work, and explains the conditions for energized swapping. In addition to electrical safe work practices, recommended electrical equipment design attributes are also de-scribed that help reduce the risk of injury.