
9.11
Date Code 20090730
Instruction Manual
SEL-734 Meter
Settings
Settings Explanations
Settings Explanations
Section 9
Settings
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-734 has two identifier labels, the Meter Identifier (MID) and the
Terminal Identifier (TID). The Meter Identifier is typically used to identify the
meter. Typical Terminal Identifiers include an abbreviation of the substation
name and line terminal.
The meter tags each report (event report, meter report, etc.) with the Meter
Identifier and Terminal Identifier. This allows you to distinguish the report as
one generated for a specific location.
MID 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 neutral current transformer ratios are set independently. If neutral
channel IN is connected residually with IA, IB, and IC, then set CTR and
CTRN the same. Meter settings CTR and CTRN are used in meter event
reports and metering functions to scale secondary current quantities into
primary values. The following interfaces are scaled into primary values: Meter
Reports (MET), Human-Machine-Interface (HMI), Display Points (DP), and
Distributed Network Protocol (DNP). See
for
a list of all applicable analog quantities.
Potential Transformer
Ratios
Meter setting PTR is the overall potential ratio from the primary system to the
meter phase voltage terminals. For example, on a 480 V phase-to-phase
primary system with wye-connected 277:120 V PTs, the correct PTR setting
is 2.3083.
Setting PTR is used in event report and meter commands so that power system
values can be reported in primary units. The following interfaces are scaled
into primary values: Meter Reports (MET), Human-Machine-Interface (HMI),
Display Points (DP), and Distributed Network Protocol (DNP). See
for a list of all applicable analog quantities.
Enable Settings
The enable settings on Settings Sheet 1 (EDEM through EKYZ) control the
settings that follow, through Sheet 16. This helps limit the number of settings
that need to be made.
NOTE:
When a SEL
OGIC
control
equation setting is not enabled, its
equation is forced to NA and its
associated Meter Word bit is forced
to 0.
Each setting subgroup on Settings Sheets 1 through 16 references the
controlling enable setting. For example, enable setting EKYZ controls the
number of KYZ pulse bits that are available in the meter.
Other System
Parameters
The global setting PHROT allows you to configure the SEL-734 to your
specific system.
You can set PHROT equal to your power system phase rotation, either ABC or
ACB.
Use the set DATE_F to format the date displayed in meter reports and the
front-panel display. You can set DATE_F to MDY to display dates in
Month/Day/Year format YMD to display dates in Year/Month/Day format , or
DMY to display dates in Day/Month/Year format.
Summary of Contents for SEL-734
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