LBS khí SF6 ABB
- Nhà sản xuất: ABB
- Dòng sản phẩm: LBS - Cầu dao phụ tải
- Số lượng sản phẩm trong kho: 100
THÔNG SỐ KỸ THUẬT
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Insulation level |
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|
NXB and NXBD |
NXA |
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Rated voltage |
kV |
12 |
24 |
36 |
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Power frequency withstand voltage, 50 Hz |
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|
|
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- to earth and between phases |
kV |
28 |
50 |
70 |
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- across the isolating distance |
kV |
32 |
60 |
80 |
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Lightning impulse withstand voltage |
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|
|
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- to earth and between phases |
kV |
75 |
125 |
170 |
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- across the isolating distance |
kV |
85 |
145 |
195 |
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Current ratings |
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|
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Rated normal current |
A |
630 |
630 |
630 |
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Mainly active load breaking current |
A |
630 |
630 |
630/400 |
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Number of breaking operations CO |
n |
400 |
400 |
100/400 |
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Line-charging breaking current |
A |
50 |
50 |
2 |
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Cable-charging breaking current |
A |
50 |
50 |
40 |
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Earth fault breaking current |
A |
50 |
50 |
130 |
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Cable charging breaking current |
|
|
|
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under earth fault conditions |
A |
28 |
28 |
80 |
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No-load transformer breaking current |
A |
|
|
20 |
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Short-circuit ratings |
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|
|
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Short-time withstand current, Ik |
kA/s |
20 kA/4 s |
20 kA/4 s |
12.5 kA/3 s |
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Peak withstand current |
kA |
50 |
50 |
31.5 |
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Short-circuit making current |
kA |
50 |
50 |
31.5 |
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Number of making operations |
|
|
|
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- main switch 50 kA (CL E3) |
n |
5 |
5 |
|
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- main switch 31.5 kA (CL E3) |
n |
10 |
10 |
5 |
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- earthing switch 50 kA (CL E2) |
n |
3 |
3 |
|
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- earthing switch 31.5 kA (CL E3) |
n |
5 |
5 |
|
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Creepage distance |
mm |
620 |
620 |
1440 |
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Ambient air temperature limits |
|
-40°C...+60°C*1 |
-40°C...+60°C*1 |
-40°C...+60°C |
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Mechanical endurance (number of close-open operations) |
|
|
|
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- main switch |
n |
5000 |
5000 |
5000 |
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- earthing switch*2 |
n |
2000 |
2000 |
|
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Filling pressure (+20°C) |
bar (abs) |
1.4-1.5 |
1.4-1.5 |
1.8-1.9 |
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Alarm pressure (+20°C) |
|
|
|
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- density switch |
bar (abs) |
1.2 |
1.2 |
1.65 |
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- density gauge |
bar (abs) |
1.2 |
1.2 |
1.6 |
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- low gas lock-out mechanism |
bar (abs) |
1.1 |
1.1 |
1.6 |
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Weight |
|
|
|
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NXB (manual operated type) |
kg |
|
82 |
|
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NXA (manual operated type) |
kg |
|
117 |
|
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NXBD (manual operated type) |
kg |
|
138 |
|
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Degree of protection of the mechanism box |
|
IP67 |
IP67 |
IP67 |
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