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This setting defines the operating direction for zones Z3, Z4 and Z5 (the directionality of zones
Z1, Z2 and ZRV is fixed). The options are
Non-directional, Forward or Reverse. The result from
respective set value is illustrated in
, where the positive impedance corresponds to
the direction out on the protected line.
IEC05000182-2-en.vsdx
R
X
R
X
R
X
Non-directional
Forward
Reverse
IEC05000182 V2 EN-US
Figure 198: Directional operating modes of the distance measuring zones 3 to 5
tPPZx, tPEZx, TimerModeZx, ZoneLinkStart and TimerLinksZx
The logic for the linking of the timer settings can be described with a module diagram. The
following figure shows only the case when
TimerModeZx is selected to Ph-Ph and Ph-E.
Section 7
1MRK 505 343-UEN B
Impedance protection
322
Application manual
Summary of Contents for Relion 670 series
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