STRV
0.6 * I>DIR
STFW
-RCA -85 deg
40% of
I>DIR
I>DIR
RCA
65 deg
U = -U
pol 2
I = I
op 2
RCA +85 deg
RCA -85 deg
Characteristic
for STRV
Operating area
Operating area
Characteristic
for STFW
Characteristic for reverse
release of measuring steps
Characteristic for forward
release of measuring steps
-RCA +85 deg
IEC11000269-2-en.ai
IEC11000269 V2 EN
Figure 40:
Operating characteristic for earth-fault directional element using the
negative sequence components
Two relevant setting parameters for directional supervision element are:
•
Directional element will be internally enabled to operate as soon as Iop is bigger
than 40% of
I>Dir
and directional condition is fulfilled in set direction.
•
Relay characteristic angle
AngleRCA
, which defines the position of forward and
reverse areas in the operating characteristic.
Directional comparison step, built-in within directional supervision element, will set
EF4PTOC function output binary signals:
1. STFW=1 when operating quantity magnitude Iop x cos(φ -
AngleRCA
) is bigger
than setting parameter
I>Dir
and directional supervision element detects fault in
forward direction.
2. STRV=1 when operating quantity magnitude Iop x cos(φ -
AngleRCA
) is bigger
than 60% of setting parameter
I>Dir
and directional supervision element detects
fault in reverse direction.
Section 7
1MRK 505 288-UEN A
Current protection
102
Technical manual
Содержание Relion 650 Series REB650
Страница 1: ...Relion 650 series Busbar protection REB650 Technical manual ...
Страница 2: ......
Страница 36: ...30 ...
Страница 44: ...38 ...
Страница 58: ...52 ...
Страница 80: ...74 ...
Страница 84: ...78 ...
Страница 152: ...146 ...
Страница 278: ...272 ...
Страница 316: ...310 ...
Страница 432: ...426 ...
Страница 504: ...498 ...
Страница 518: ...512 ...
Страница 566: ...560 ...
Страница 567: ...561 ...