|
Item |
Description |
Unit |
Data |
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|
1 |
Rated voltage |
KV |
12 |
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|
2 |
1min Power frequency withstand voltage |
42 |
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|
3 |
Lightning impulse withstand voltage(peak) |
75 |
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|
4 |
Rated frequency |
Hz |
50 |
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|
5 |
Rated current |
A |
630 1250 |
630 1600 2500 |
1250 2000 3150 |
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|
6 |
Rated short circuit breaking current |
KA |
20 |
25 |
31.5 |
40 |
|
7 |
Rated short circuit withstand current |
20 |
25 |
31.5 |
40 |
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|
8 |
Duration of rated short circuit current |
S |
4 |
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|
9 |
Rated peak withstand current |
KA |
50 |
63 |
80 |
100 |
|
10 |
Rated short circuit making current |
50 |
63 |
80 |
100 |
|
|
11 |
1min Power frequency withstand voltage on secondary circuit |
V |
2000 |
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|
12 |
Rated single/back capacitor bank breaking current |
A |
630/400(40KA:800/400) |
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|
13 |
Rated capacitor bank making current |
KA |
12.5 |
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|
14 |
Opening time |
ms |
≤50 |
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|
15 |
Closing time |
≤70 |
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|
16 |
Mechanical life |
time |
30000 |
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|
17 |
Nos of breaking rated current |
30000 |
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|
18 |
Nos of breaking rated short circuit breaking current |
50 |
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|
19 |
Permissible abraded thickness of moving, static contacts |
mm |
3 |
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|
20 |
Opening distance of contact |
9±1(1600A:11±1) |
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|
21 |
Over travelling distance contact |
3.5±0.5 |
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|
22 |
Jumping time of contact at closing |
ms |
≤2(40KA≤3) |
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|
23 |
Asynchrony of three phase opening, closing |
≤2 |
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|
24 |
Average opening speed |
m/s |
0.9～1.2 |
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|
25 |
Average closing speed |
0.5～0.8 |
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|
26 |
Rebound height of contact opening |
mm |
0 |
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|
27 |
Ressistance of main circuit |
μΩ |
≤40(Below1250A) |
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|
≤35(1600～2000A)≤25(Over2500) |
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|
28 |
Contacting pressure at closing contact |
N |
2000±200(20KA)2400±200(25KA) |
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|
3100±200(31.5KA)4300±200(40KA) |
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|
29 |
Rated operating sequence |
off-0.3S-on/off-180s-on/off |
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