![ABB RELION Series Скачать руководство пользователя страница 362](http://html1.mh-extra.com/html/abb/relion-series/relion-series_technical-manual_3663191362.webp)
In case of a communication failure, the start duration may change substantially
depending on the user settings.
When the programmable IDMT curve is selected, the operation time characteristics
are defined with the
Curve parameter A
,
Curve parameter B
,
Curve parameter C
,
Curve parameter D
and
Curve parameter E
parameters.
If a drop-off situation happens, that is, a fault suddenly disappears before the operation
delay is exceeded, the Timer reset state is activated. The functionality of Timer in the
reset state depends on the combination of the
Operating curve type
,
Type of reset
curve
and
Reset delay time
settings. When the DT characteristic is selected, the reset
timer runs until the value of the
Reset delay time
setting is exceeded. When the IDMT
curves are selected, the
Type of reset curve
setting can be set to "Immediate", "Def
time reset" or "Inverse reset". The reset curve type "Immediate" causes an immediate
reset. With the reset curve type "Def time reset", the reset time depends on the
Reset
delay time
setting. With the reset curve type "Inverse reset", the reset time depends on
the current during the drop-off situation. If the drop-off situation continues, the reset
timer is reset and the
START
output is deactivated.
The "Inverse reset" selection is only supported with ANSI or the
programmable types of the IDMT operating curves. If another
operating curve type is selected, an immediate reset occurs during the
drop-off situation.
The setting
Time multiplier
is used for scaling the IDMT operation and reset times.
The setting parameter
Minimum operate time
defines the minimum desired operation
time for IDMT. The setting is applicable only when the IDMT curves are used
The
Minimum operate time
setting should be used with great care
because the operation time is according to the IDMT curve but always
at least the value of the
Minimum operate time
setting. More
information can be found in the
Timer calculates the start duration value START_DUR, which indicates the
percentage ratio of the start situation, and the set operating time, which can be either
according to DT or IDMT. The value is available in the monitored data view.
More information can be found in the
General function block features
.
Blocking logic
There are three operation modes in the blocking function. The operation modes are
controlled by the
BLOCK
input and the global setting in
Configuration/System/
Blocking mode
which selects the blocking mode. The
BLOCK
input can be controlled
by a binary input, a horizontal communication input or an internal signal of the
protection relay's program. The influence of the
BLOCK
signal activation is
preselected with the global setting
Blocking mode
.
Section 4
1MRS758755 A
Protection functions
356
REC615 and RER615
Technical Manual
Содержание RELION Series
Страница 1: ... RELION PRODUCT FAMILY Grid Automation REC615 and RER615 Technical Manual ...
Страница 2: ......
Страница 30: ...24 ...
Страница 50: ...44 ...
Страница 189: ...3 18 5 Settings 1MRS758755 A Section 3 Basic functions REC615 and RER615 183 Technical Manual ...
Страница 206: ...200 ...
Страница 514: ...508 ...
Страница 714: ...708 ...
Страница 786: ...780 ...
Страница 796: ...790 ...
Страница 798: ...792 ...
Страница 803: ...797 ...