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ABB REL650 - Operation Principle

ABB REL650
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PID-6630-SETTINGS v2
Table 599: PTP Non group settings (advanced)
Name Values (Range) Unit Step Default Description
Domain 0 - 127 - 1 0 0 = Default domain, 1-3 = Alternative
domain, 4-127 = User defined
Priority1 0 - 255 - 1 128 The clock with the lowest priority 1
becomes the reference clock (Grand
Master)
Priority2
0 - 255 - 1 128 If all the relevant values for selecting the
reference clock are the same for multiple
devices, the clock with the lowest priority
2 is selected as the reference clock
(Grand Master)
19.1.3 Operation principle
IP12360-1 v4
19.1.3.1 General concepts
M11346-77 v1
Time definitions
M11346-80 v3
The error of a clock is the difference between the actual time of the clock, and the
time the clock is intended to have. Clock accuracy indicates the increase in error,
that is, the time gained or lost by the clock. A disciplined clock knows its own
faults and tries to compensate for them.
Design of the time system (clock synchronization)
GUID-E2B9E81C-5733-4521-B27F-BF33E05CCFB0 v8
The time system is based on software and hardware clocks that run independently
from each other (see Figure 383).
1MRK 506 382-UEN A Section 19
Basic IED functions
Line distance protection REL650 2.2 IEC 801
Technical manual

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