Sel 411L - Table 3.63 Fault Location Settings for 4-Terminal Line with Two TAP Points; Table 3.64 Fault Location Relay Word Bit

P.3.133
Date Code 20151029 Protection Manual SEL-411L Relay
Protection Functions
Fault Location
Note that the relay calculates the fault location in this way when the
communications among the relays are healthy. If the communications fail, the
fault location calculations revert to single-ended fault location calculations.
Table 3.63 Fault Location Settings for 4-Terminal Line With Two TAP Points
Name Description Range Default (5A)
Z1TTMAG
a
a
These settings are only available if E87CH = 4E.
Positive-sequence line impedance magnitude from tap point TAP 1 to tap point
TAP 2
0.00–255 
secondary
0.00
Z1TTANG
a
Positive-sequence line impedance angle from tap point TAP 1 to tap point TAP 2 5.00°–90° 84.00
Z0TTMAG
a
Zero-sequence line impedance magnitude from tap point TAP 1 to tap point TAP 2 0.00–255 
secondary
0.00
Z0TTANG
a
Zero-sequence line impedance angle from tap point TAP 1 to tap point TAP 2 5.00°–90° 81.50
LLT
a
Length of line between TAP 1 and TAP 2 0.10–999 0.10
STRTID
a
Remote relay which is connected to the same tap point as the local relay 1–3 2
Table 3.64 Fault Location Relay Word Bit
Name Description
RSTFLOC Fault locator analog quantity reset in progress.
a
a
Use Global setting RSTFLOC shown in Ta ble 5.1 1 to reset the stored fault location analog
quantity FLOC. Relay Word bit RSTFLOC will assert momentarily while the clearing action
proceeds.
When reset, the value contained in FLOC is set to a very large number (greater than 10
37
).
Resetting this value has no effect on the event reports stored in the relay, nor does it have an
affect on DNP3 event access.