ABB GSB 420 Technical Manual - Page 8
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T R A N S F O R M E R B U S H I N G S T Y P E G S B T E C H N I C A L G U I D E
—
Electrical data
—
Table 2. Electrical data
Ratings GSB
Rated voltage IEC (kV) / Nominal system
voltage
Rated phase-to-ground voltage IEC (kV) /
Insulation class (kV)
Rated line-to-ground voltage IEEE (kV)
Basic Insulation Level (kV) (
lightning impulse withstand voltage.)
Dry switching impulse (kV)
Wet switching impulse (kV)
Rated current (A) IEC/IEEE
Al conductor
Cu conductor
Rated frequency (Hz)
Temporary over voltage (kV) IEC (phase-to-
ground voltage)
Wet power frequency AC (kV)
Dry power frequency, routine test 1 min. (kV)
Nominal capacitance between conductor and
test tap C
transformer CT = 300/600 mm
—
Table 3. Draw lead current.
Draw lead current
1x50 mm
1x95 mm
1x150 mm
(3x95) 285 mm
(3x150) 450 mm
(3x240) 720 mm
—
04 Nameplate with
marking example.
Equal to dry
±10 % (pF), with space for current
1
GSB 245
IEC
IEEE
190
130
2
290
200
2
410
290
2
2
700
490
900
630
2
1220
850
2
245
362
420
245
362
420
146
220
243
146
220
243
1050
1175
1550
850
950
1050
750
950
1050
2000
1600
1600
3150
3150
2500
50-60
50-60
50-60
196
290
336
460
n.a.
650
506
561
695
663/769
619/701
579/652
GSB 362
IEC
IEEE
IEC
160
110
140
280
190
240
380
260
370
570
400
570
850
590
830
1120
780
1120
550-1675
550-1800
550
550
318
318
318
318
1675
1800
1300
1300
1300
1300
1600
1600
2500
2500
50-60
50-60
440
440
750
750
750
750
553/612
553/612
GSB 550-1675
GSB 420
and 550-1800
IEEE
IEC
100
120
80
170
200
140
300
350
240
400
510
350
580
740
510
780
1000
700
IEEE