• If the PUZMUR signal appears at the same time as the PUZMOR or if it appears
with a time delay, which is shorter than the time delay set on timer tDZ.
• If the PUZMUR signal appears after the PUZMOR signal with a time delay longer
than the delay set on the tDZ timer, and remains active longer than the time delay
set on the tZL timer.
The functional output signal can be used to block the operation of the higher distance
protection zone, if the fault has moved into the zone 1 operate area after tDZ time delay.
6.12.3 Function block
ANSI07000026-2-en.vsd
ZMRPSL
BLOCK
PUZMUR
PUZMOR
PUPSD
PUDOG
PUZMPSD
PLTR_CRD
AR1P1
CSUR
CR
TRIP
PUZMURPS
BLKZMUR
BLKZMOR
CS
ANSI07000026 V2 EN
Figure 191: ZMRPSL function block
6.12.4 Input and output signals
Table 166: ZMRPSL Input signals
Name
Type Default Description
BLOCK BOOLEAN 0 Block of function
PUZMUR BOOLEAN 0 Pickup of the underreaching zone
PUZMOR BOOLEAN 0 Pickup of the overreaching zone
PUPSD BOOLEAN 0 Power swing detected
PUDOG BOOLEAN 0 Pickup from ground Fault Protection in forward or
reverse direction
PUZMPSD BOOLEAN 0 Operation of Power Swing Detection external
characteristic
PLTR_CRD BOOLEAN 0 Overreaching ZM zone to be accelerated
AR1P1 BOOLEAN 0 Single pole auto-reclosing in progress
CSUR BOOLEAN 0 Carrier send by the underreaching power-swing zone
CR BOOLEAN 0 Carrier receive signal during power swing detection
operation
1MRK505222-UUS C Section 6
Impedance protection
359
Technical reference manual
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