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TimerSelZx
Timers linked
Internal start
Start from PhSel
Switch
:
External start
startPhG
startPhPh
FALSE
internalCommonStart
phSelStart
externalCommonStart
t
tPEZx
t
&
BLOCK
NOT
operatePhG
operatePhPh
Timers separated
³
1
³
1
³
1
&
ANSI11000270-3-en.vsd
tPPZx
ANSI11000270 V3 EN
Figure 50:
Zone tripping logic
•
Timers separated
- Separate start of timers within zone individually from phase to
ground and phase to phase measurement loops
•
Timers linked
- Start of timers linked within zone, either phase to ground or phase to
phase will start both timers within zone
•
Internal start
- Internal common start of timers from all the 5 zones
•
Start from PhSel
- Common start of timers from phSelLogic Start signal, if direction
condition is forward for the particular phase and also the zone is set for
DirModeZx
setting as
Forward
•
External start
- External common start of timers
Section 6
1MRK 506 335-UUS A
Impedance protection
124
Technical manual
Summary of Contents for REL650 series
Page 1: ...Relion 650 series Line distance protection REL650 ANSI Technical manual ...
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