1MAC050144-MB C
Section 4
Protection functions
615 series ANSI
177
Technical Manual
Figure 79:
Configurable operating sectors in phase angle characteristic
Table 164: Momentary operating direction
Directional operation is not allowed (the setting
Allow non dir
is "False") when the
measured polarizing or operating quantities are not valid, that is, their magnitude is below
the set minimum values. The minimum values can be defined with the settings
Min trip
current
and
Min trip voltage
. In case of low magnitudes, the
FAULT_DIR
and
DIRECTION
outputs are set to 0 = unknown, except when the
Allow non dir
setting is
"True". In that case, the function is allowed to operate in the directional mode as
non-directional, since the directional information is invalid.
Fault direction
The value for DIRECTION
Angle between the polarizing and operating quantity
is not in any of the defined sectors.
0 = unknown
Angle between the polarizing and operating quantity
is in the forward sector.
1= forward
Angle between the polarizing and operating quantity
is in the reverse sector.
2 = backward
Angle between the polarizing and operating quantity
is in both the forward and the reverse sectors, that
is, the sectors are overlapping.
3 = both
RCA
= 0 deg
Non-operating area
Min forward angle
Min reverse angle
Min operate
current
Max forward angle
Max reverse angle
Forward
area
Backward
area
0
-V
0
I
Summary of Contents for 615 Series ANSI
Page 1: ...Relion Protection and Control 615 series ANSI Technical Manual ...
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Page 29: ...1MAC050144 MB C Section 615 series ANSI 22 Technical Manual ...
Page 389: ...Section 4 1MAC050144 MB C Protection functions 382 615 series ANSI Technical Manual ...
Page 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
Page 635: ...Section 10 1MAC050144 MB C Other functions 628 615 series ANSI Technical Manual ...
Page 711: ...Section 16 1MAC050144 MB C Glossary 704 615 series ANSI Technical Manual ...
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