IEEE C37.90.3:2023

Revision Standard - Active.
Described in this standard are test procedure, test point selection, test level, and acceptance criteria for repeatable electrostatic discharge immunity evaluations for tabletop and floor-standing protective relay equipment. Simulator characteristics for hand/metal ESD testing are specified for both the air and contact discharge methods. This standard has been harmonized with other ESD standards where consensus could be reached.

This standard specifies design tests for relays, relay systems, and control devices used for protection and control of electric power apparatus that relate to the immunity of this equipment to electrostatic discharge.
This standard establishes a common and reproducible basis for evaluating the performance of relays, relay systems, and control devices used for protection and control of electric power apparatus when subjected to electrostatic discharge. This standard establishes that an evaluation is performed during both normal (non-tripped) and abnormal (tripped) relay operating conditions.