Disconnectors
has
developed a new generation of compact single-pole operated SF6 circuit-breaks
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Main characteristics:
- simple construction
- reliable
- notably low maintenance level
- one or two earthing switches can be built on
- operating by motor or hand drive
- porcelain or silicone insulator
CB type disconnectors with porcelain insulators
CB type disconnectors with silicone insulators
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Technical
data
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| TYPE |
SB |
CB |
TC |
VB |
PD |
ES |
|
| DESIGN |
SIDE BREAK ROTARY DISCONNECTOR |
CENTER BREAK ROTARY DISCONNECTOR |
THREE COLUMN BREAK DISCONNECTOR |
VERTICAL BREAK DISCONNECTOR |
PANTOGRAPH DISCONNECTOR |
EARTHING SWITCH |
|
| RATED VOLTAGE |
kV
|
72.5
|
72.5-550
|
123-300
|
123-550
|
72.5-550
|
72.5-550
|
| RATED CURRENT |
A
|
1250-2500
|
1250-3150
|
1250-3150
|
1250-3150
|
1250-3150
|
-
|
| RATED SHORT-TIME WITHSTAND CURRENT (1S/3S) |
kV
|
25-40
|
31.5-50
|
31.5-50
|
31.5-50
|
31.5-50
|
31.5-50
|
| RATED PEAK WITHSTAND CURRENT |
kV
|
63-100
|
80-125
|
80-125
|
80-125
|
80-125
|
80-125
|
| RATED
POWER FREQUENCY WITHSTAND VOLTAGE TO EARTH (50 Hz; 1 min) |
kV
|
140
|
140-620
|
230-460
|
230-620
|
140-620
|
140-620
|
| RATED
POWER FREQUENCY WITHSTAND VOLTAGE ACROSS OPEN CONTACTS (50 Hz; 1 min) |
kV
|
160
|
160-180
|
265-530
|
265-800
|
160-800
|
160-800
|
| RATED LIGHTNING IMPULSE WITHSTAND VOLTAGE TO EARTH (1.2/50µs) |
kV
|
325
|
325-1550
|
550-1050
|
550-1550
|
325-1550
|
325-1550 |
| RATED LIGHTNING IMPULSE WITHSTAND VOLTAGE ACROSS OPEN CONTACTS (1.2/50µs) |
kV
|
375
|
375-1550
(+315) |
630-1050
(+170) |
630-1550
(+315) |
375-1550
(+315) |
375-1550
(+315) |
| RATED SWITCHING IMPULSE WITHSTAND VOLTAGE TO EARTH (250/500µs) |
kV
|
-
|
850-1175*
|
850*
|
850-1175*
|
850-1175*
|
850-1175*
|
| RATED SWITCHING IMPULSE WITHSTAND VOLTAGE ACROSS OPEN CONTACTS (250/500µs) |
kV
|
-
|
700(+245)... |
700(+245)* |
700(+245)... |
700(+245)... |
700(+245)... |
TYPE CB
TYPE SB
TYPE TC
TYPE PD
TYPE VB
TYPE SB
