Working Group F-8 ''Digital Simulator Performance Requirements for Rel
ay Testing'' of the Relay Input Sources Subcommittee, Power System Rel
aying Committee, was formed in 1992 with the following assignment: ''I
nvestigate performance characteristics of digital simulators when gene
rating Electromagnetic Transient Program (EMTP) and Digital Fault Reco
rder (DFR) based relay test waveforms. Write performance requirements
specifications and prepare a paper describing the importance of the si
mulator performance characteristics.'' This paper presents the work ac
complished by the working group in fulfilling its assignment.