ABB Relion 670 Series Applications Manual page 289

1MRK 511 358-UUS A
READY
Indicates that SMBRREC (79) function is ready for a new and complete reclosing sequence. It can
be connected to the zone extension if a line protection should extended zone reach before
automatic reclosing.
1PT1 and 2PT1
Indicates that single-phase or two-phase automatic reclosing is in progress. It is used to
temporarily block an ground-fault and/or pole disagreement function during the single-phase or
two-phase open interval.
3PT1, 3PT2, 3PT3, 3PT4 and 3PT5
Indicates that three-phase automatic reclosing shots 1-5 are in progress. The signals can be used
as an indication of progress or for own logic.
PREP3P
Prepare three-pole trip is usually connected to the trip block to force a coming trip to be a three-
phase one. If the function cannot make a single-phase or two-phase reclosing, the tripping should
be three-pole.
PERMIT1P
Permit single-pole trip is the inverse of PREP3P. It can be connected to a binary output relay for
connection to external protection or trip relays. In case of a total loss of auxiliary power, the
output relay drops and does not allow single-pole trip.
WFMASTER
Wait from master is used in high priority units to hold back reclosing of the low priority unit during
sequential reclosing. Refer to the recommendation for multi-breaker arrangements in figure 116.
Other outputs
The other outputs can be connected for indication, disturbance recording, as required.
Application manual
Section 13
Control
283