Schweitzer Engineering Laboratories SEL-311L, Инструкция по эксплуатации, Страница: 373 / 734

Date Code 20010625 Setting the Relay 9-35
SEL----311L Instruction Manual
Row Bit Definition
Primary
Application
67 50LG Local 3I0 overcurrent element output
(see Figure 3.19)
50RG Remote 3I0 overcurrent element output
(see Figure 3.19)
T51P Tapped load phase time overcurrent pickup
(see Figure 3.23)
T51PR Tapped load phase time overcurrent reset
(see Figure 3.23)
T51G Tapped load ground time overcurrent pickup
(see Figure 3.24)
T51GR Tapped load ground time overcurrent reset
(see Figure 3.24)
T51Q Tapped load negative-sequence time overcurrent
pickup (see Figure 3.25)
T51QR Tapped load negative-sequence time overcurrent
reset (see Figure 3.25)
1
IMPORTANT : See Appendix F for special instructions on setting negative-sequence
overcurrent elements.
S
ETTINGS
E
XPLANATIONS
Note that most of the settings in the settings sheets that follow include references for additional
information. The following explanations are for settings that do not have reference information
anywhere else in the instruction manual.
Identifier Labels
The SEL-311L Relay has two identifier labels: the Relay Identifier (RID) and the Terminal
Identifier (TID). The Relay Identifier is typically used to identify the relay or the type of
protection scheme. Typical terminal identifiers include an abbreviation of the substation name
and line terminal.
The relay tags each report (event report, meter report, etc.) with the Relay Identifier and Terminal
Identifier. This allows you to distinguish the report as one generated for a specific breaker and
substation.
RID and TID settings may include the following characters: 0–9, A–Z, #, &, @, -, /, ., space.
These two settings cannot be made via the front-panel interface.
Current Transformer Ratios
Phase and polarizing current transformer ratios are set independently. CTR_X and CTR_Y may
be set differently than CTR.