synchronizing scheme for 500kv circuit breakers
DESCRIPTION
Synchronizing Scheme for 500kV Circuit BreakersTRANSCRIPT
-
Wiring 2.5mm black,if not otherwise specified2
Circuit Breaker Q1(B7 Q1)Synchronizing
=B7+W8
CONTROL PANEL
27
29 N
11
14
-K25A/Z4.3
24
25-X9
21
24
-K25A/Z4.3
26
31
34
-K25A/Z4.4
28
27
41
44
-K25A
30
21
24
-KCQ12/Z4.3
21
24
-KCQ10/Z4.3
31
34
-KCQ12/Z4.3
31
34
-KCQ10/Z4.3
-X9
-X9
-X9
21
24
-KCQ11/Z4.3
31
34
-KCQ11/Z4.3
=B7+W7
CONTROL PANEL
-X301 718 720 722 724
/OB3.2/OB3.2/OB3.2/OB3.2
/NA3.2
705-X301
708
EXIST
YI
75-X9 /0C4.4
77-X9 /0C4.4
=+W-152ZR-KVVP2-10X2.5
=+W7CONTROL PANEL
=+W-152ZR-KVVP2-10X2.5
=+W7CONTROL PANEL
FROM CVT-BB-I
5N
/OC4.1
24
31
36KCQ12
KCQ10
KCQ3
34
21
KCQ20
21
31
KCQ2
/Z4.3
/Z4.3
/Z4.3
/Z4.3
24
/Z4.3
74
54
51
72
71
74
71
KCQ12
KCQ10
KCQ3
32
71
KCQ20
31KCQ2
3Y
/OB3.2
36
31
74
71
FROM CVT-ATB2 FEEDER
Rev Remarks Date Name Appr.CheckDrawnDate
ADDITION OF 2ND 500/220kV,3X200MVA AUTO-TRANSFORMER BANK ALONG WITH
500kV GIS AND 220kV AIS EQUIPMENT AT 500/220kV GHAZI BAROTHA GRID STATION
NATIONAL TRANSMISSION AND DESPATCH COMPANY LIMITED (NTDC) Ref. no :=B7+W8 OA3
ADB-51-2009-E0203-01-51Sheet 3+3 Sh.
500kV Control Panel =B7+W8S
Synchronizing Voltage SelectionSchematic Diagram
/Z4.3
/Z4.3
/Z4.3
/Z4.3
/Z4.3
3N
/OB3.1
3Y
/OB3.1
CVT LINE
/OA3
2Y
2N
/OB3.2
/OB3.3
/OB3.4
/OB3.5
1Y
1N
N
32
31
Y2 Y2N Y1 Y1N
COMPARISON OF VTSi BUSI WITH ATBII
iii LINE WITH BUSIii BUSI WITH BUSII
CVT BBII
4Y
/OB3.1
4N
/OB3.15Y
/OC4.1
23-X9/NA3.2
CVT-ATBII FEEDER