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3.5.2
Application
The rated system frequency is set in
Main menu/Configuration/System
in the LHMI
and PCM600.
3.5.3
Settings
Table 19:
PRIMVAL Non group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Frequency
50.0 - 60.0
Hz
10.0
50.0
Rated system frequency
PhaseRotation
Normal=L1L2L3
Inverse=L3L2L1
-
-
Normal=L1L2L3
System phase rotation
3.6
Global phase base values BASEPH
3.6.1
Functionality
Almost all the current, voltage and power setting values are given in per unit (p.u.)
values. The p.u. values are relational values to certain base values (given in A, kV,
kVA). The base values are separate setting parameters for an IED. The base values are
set independently of the used measurement device primary ratings. This allows for the
settings to be given in relation to the nominal current and voltage values of the
protected object, for example, if the measurement devices are oversized and their
primary ratings are higher than the nominal values of the protected object.
The phase-to-earth or phase-to-phase base values are defined in BASEPH. The global
settings related to BASEPH are located in
Configuration/Analog inputs/Base
values/Phase Grp 1…3
in LHMI and
Configuration/Analog inputs/Base values/
BASEPH :1…3
in PST.
The BASEPH (Phase Grp) is called phase-to-earth or phase-to-phase base value
group.
There are three groups (instances) of BASEPH (Phase Grp). As a default, all the
applicable functions in the IED are set to use the same group of the base values.
However, in each applicable function there is a selection (Base value Sel phase
advanced settings) where one of the three possible groups can be selected individually
for the function in question.
For example, all PHxPTOC functions use the first group Base value Sel phase =
"Phase Grp 1" as a default but two other groups "Phase Grp 2" are "Phase Grp 3" are
possible to select.
Section 3
1MRS757256 F
Basic functions
52
PML630/Compact Load-Shedding Solution
Technical Manual
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