G.11
Date Code 20060320 Instruction Manual SEL-311C Relay
SEL Synchrophasors
Synchrophasor Relay Word Bits
Synchrophasor Relay Word Bits
The Time Synchronization Relay Word bits in Tabl e G.7 indicate the present
status of the timekeeping function of the SEL-311C. See IRIG-B on
page 10.2.
Table G.7 Time Synchronization Relay Word Bits
Name Description
TIRIG Asserts while relay time is based on IRIG-B time source.
TSOK Time Synchronization OK. Asserts while time accuracy
is of sufficient accuracy for synchrophasor measurement
and satisfies TS_TYPE requirements.
PMDOK Phasor Measurement Data OK. Asserts
when the SEL-311C is enabled, synchrophasors
are enabled (Global setting EPMU = Y), and TSOK is asserted.