3. OPERATION PRINCIPLES
GEK-98514B
BUS1000 Busbar Protection
3-5
3.3.
SENSITIVITY EQUATION OF THE PERCENT RESTRAINT UNIT
From fig. 4 we may draw out the following equations.
From (1) and (2) we have:
We find that the unit will produce an output (operate) when:
So:
In the same way the unit does not operate when:
For more security we can say that the unit will not trip if:
OR
Thus:
From this we can finally deduce that:
X
FAULT
D
I
I
I
−
=
MAX
X
E
D
R
I
R
I
*
*
=
[10]
[9]
))
/
(
1
(
*
)
/
(
*
MAX
E
D
MAX
E
D
D
FAULT
R
R
I
R
R
I
I
I
+
=
=
+
=
)
/
(
*
))
/
(
1
(
*
MAX
E
D
MAX
E
D
X
FAULT
F
R
R
I
R
R
I
I
I
I
+
+
=
+
=
))
/
(
*
2
1
(
*
MAX
E
D
F
R
R
I
I
+
=
[11]
[13]
[12]
1
.
0
*
≥
−
F
D
I
K
I
))
/
(
*
2
1
(
*
*
MAX
E
D
D
R
R
I
K
I
+
≥
1
.
0
)))
/
(
*
2
1
(
*
1
(
*
≥
+
−
MAX
E
D
R
R
K
I
[14]
[15]
1
.
0
)))
/
(
*
2
1
(
*
1
(
*
<
+
−
MAX
E
D
R
R
K
I
[16]
0
)))
/
(
*
2
1
(
*
1
(
*
<
+
−
MAX
E
D
R
R
K
I
0
))
/
(
*
2
1
(
*
1
<
+
−
MAX
E
R
R
K
))
/
(
*
2
1
(
*
1
MAX
E
R
R
K
+
<
E
MAX
MAX
R
K
R
K
R
*
*
2
*
+
<
[17]
[18]
[19]
K
R
K
R
E
MAX
−
<
1
*
*
2
[20]
K
K
R
R
MAX
E
2
/
)
1
(
*
−
>
Содержание BUS1000
Страница 6: ......
Страница 8: ......
Страница 27: ...5 HARDWARE DESCRIPTION GEK 98514B BUS1000 Busbar Protection 5 3 Figure 7 1 BBD RACK Figure 7 2 BTR RACK ...
Страница 28: ...5 HARDWARE DESCRIPTION 5 4 BUS1000 Busbar Protection GEK 98514B Figure 7 4 BAR RACK Figure 7 5 BFR RACK ...
Страница 34: ...5 HARDWARE DESCRIPTION 5 10 BUS1000 Busbar Protection GEK 98514B ...
Страница 36: ...6 RECEIVING HANDLING AND STORAGE 6 2 BUS1000 Busbar Protection GEK 98514B ...
Страница 54: ...8 FINAL INSTALLATION AND COMMISSIONING 8 4 BUS1000 Busbar Protection GEK 98514B ...
Страница 56: ...9 TESTS AND PERIODICAL MAINTENANCE 9 2 BUS1000 Busbar Protection GEK 98514B ...
Страница 57: ...10 FIGURES GEK 98514B BUS1000 Busbar Protection 10 1 10 10 10 10 FIGURES FIGURES FIGURES FIGURES ...
Страница 66: ...10 FIGURES 10 10 BUS1000 Busbar Protection GEK 98514B ...
Страница 70: ...11 DIMENSIONS 11 4 BUS1000 Busbar Protection GEK 98514B FIGURE 19 POWER SUPPLY OR THYRITE BOXES 226B2211F18 ...
Страница 71: ...11 DIMENSIONS GEK 98514B BUS1000 Busbar Protection 11 5 FIGURE 20 BREAKER BLOCK DIAGRAM 226B2211F23 ÿ ÿ ÿ ÿ ÿ ...
Страница 74: ...11 DIMENSIONS 11 8 BUS1000 Busbar Protection GEK 98514B FIGURE 23 CABINET 226B2211F21 ...
Страница 104: ...13 SCHEMATICS DOUBLE BUSBAR 13 16 BUS1000 Busbar Protection GEK 98514B ...
Страница 107: ...13 SCHEMATICS DOUBLE BUSBAR GEK 98514B BUS1000 Busbar Protection 13 19 16 TEST UNIT ZONES A B 226B6429F16 ...
Страница 121: ...13 SCHEMATICS DOUBLE BUSBAR GEK 98514B BUS1000 Busbar Protection 13 33 31 POWER SUPPLY AUXILIARY CIRCUITS 226B6429F31 ...
Страница 123: ...13 SCHEMATICS DOUBLE BUSBAR GEK 98514B BUS1000 Busbar Protection 13 35 43 SIGNALLING CONTACT OUTPUTS 226B6429F43 ...
Страница 124: ...13 SCHEMATICS DOUBLE BUSBAR 13 36 BUS1000 Busbar Protection GEK 98514B CABINETS INTERCONNECTIONS 226B6429F44 ...