F6000 Family of Power System Simulators User Guide
72A-1589 Rev. C 02/01 D-5
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1. With the technician at the other end of the transmission line, define
the exact time to conduct the test.
2. Enter the agreed time in the Go At field of the ProTesT display.
Once each second, the F6000 receives the exact time from the GPS
receiver. When the reference time is the same as the common Go At
time specified for each test instrument, the two instruments apply the
specified fault to each relay.
For example, the technicians agree by phone to conduct the test at
17:00:00 UTC. They program each instrument to deliver the same fault
to each relay at the same time. Since both instruments key on the same
satellite, their internal clocks are synchronized and they both inject the
fault at precisely 17:00:00 UTC.
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