Section 4
1MAC050144-MB C
Protection functions
170
615 series ANSI
Technical Manual
Figure 74:
Definition of the relay characteristic angle, RCA=+60 degrees in a solidly
grounded network
Example 3.
The "Phase angle" mode is selected, isolated network (
φ
RCA = -90 deg)
=>
Characteristic angle
= -90 deg
N
o
n
-o
p
e
ra
tin
g
a
re
a
Min reverse angle
Min operate
current
Max forward angle
Max reverse angle
Characteristic angle
= +60 deg
Min forward angle
maximum torque line
zero torque line
-
(polarizing quantity)
(operating quantity)
0
V
0
I
Содержание 615 Series ANSI
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Страница 389: ...Section 4 1MAC050144 MB C Protection functions 382 615 series ANSI Technical Manual ...
Страница 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
Страница 635: ...Section 10 1MAC050144 MB C Other functions 628 615 series ANSI Technical Manual ...
Страница 707: ...Section 15 1MAC050144 MB C Applicable standards and regulations 700 615 series ANSI Technical Manual ...
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