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FCD系列(lie)旋(xuan)轉(zhuan)電(dian)機(ji)用(yong)磁吹閥(fa)式避雷器(qi),是用(yong)于保護相應額定電(dian)壓(ya)(ya)的交流旋(xuan)轉(zhuan)電(dian)機(ji)(包(bao)括發(fa)電(dian)機(ji)、同步調相機(ji)、調頻機(ji)、電(dian)動機(ji))和 高頻阻波器(qi)的絕(jue)緣,免受(shou)大氣過電(dian)壓(ya)(ya)的損害。
FCD系列(lie)旋轉電(dian)(dian)(dian)機用磁(ci)吹(chui)閥式避雷(lei)器,由于采用磁(ci)吹(chui)滅弧(hu)(hu)間(jian)(jian)隙(xi)(xi),增大了滅弧(hu)(hu)能力,同(tong)時(shi)增大了續(xu)流(liu)值(zhi),相應地降(jiang)低(di)了殘壓。在火(huo)花 間(jian)(jian)隙(xi)(xi)旁(pang)并聯分路電(dian)(dian)(dian)阻,使(shi)(shi)工(gong)頻(pin)放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)壓沿火(huo)花間(jian)(jian)隙(xi)(xi)均勻(yun)分布,提高工(gong)頻(pin)放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)壓,改善(shan)了沖(chong)擊系數,而且利(li)用改變間(jian)(jian)隙(xi)(xi)的主(zhu)電(dian)(dian)(dian)容或雜散電(dian)(dian)(dian)容的辦(ban)法,使(shi)(shi)間(jian)(jian)隙(xi)(xi)組之間(jian)(jian)的沖(chong)擊電(dian)(dian)(dian)壓分布不均勻(yun),以降(jiang)低(di)避雷(lei)器的沖(chong)擊放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)壓,使(shi)(shi)其有較好(hao)的保(bao)護特性。
特性參數 產品型號 |
電機額定電壓 kV (有效值) |
避雷器額定電壓kV (有效值) |
工頻放電電壓 kV |
沖擊放電電壓 1.5-2.0μS ≮kV (峰值) |
8/20 μS 殘壓 (5kA) ≮kV (峰值) |
通流能力 |
電導電流 |
傘徑 φ mm |
高度 H mm | ||
2mS方波 A |
8/20 μS 沖擊 kA |
外施電壓 kV |
電流值 ≮ μA | ||||||||
FCD3-3 |
3.15 |
3.8 |
7.5-9.5 |
9.5 |
9.5 |
400 |
10 |
3 |
30 |
100 |
220 |
FCD3-4 |
4 |
4.6 |
9-11.4 |
12 |
12.0 |
400 |
10 |
4 |
30 |
100 |
220 |
FCD3-6 |
6.3 |
7.6 |
15-18 |
19 |
19.0 |
400 |
10 |
6 |
30 |
100 |
220 |
FCD3-10 |
10.5 |
12.7 |
25-30 |
31 |
31.0 |
400 |
10 |
10 |
30 |
100 |
270 |
FCD3、FCD5系列特性表
型號 |
FCD3-2 |
FCD3-3 |
FCD3-4 |
FCD3-6 |
FCD3-10 |
FCD3-13 |
FCD3-15 | ||
電機標稱電壓kV(有效值) |
|
3.15 |
|
6.3 |
10.5 |
13.8 |
15.75 | ||
額定電壓kV(有效值) |
2.3 |
3.8 |
4.6 |
7.6 |
12.7 |
16.7 |
19 | ||
工頻放電電壓kV(有效值) |
4.5~5.7 |
7.5~9.5 |
9~11.4 |
15~18 |
25~30 |
33~39 |
37~44 | ||
1.2/50μs沖擊放電電壓 |
6 |
9.5 |
12 |
19 |
31 |
40 |
45 | ||
殘壓(8/20μs) |
3kA |
6 |
9.5 |
12 |
19 |
31 |
40 |
45 | |
5kA |
6.4 |
10 |
12.8 |
20 |
33 |
43 |
49 | ||
電導 |
直流試驗電壓(kV) |
2 |
3 |
4 |
6 |
10 |
13.2 |
15 | |
電流不大于(μA) |
10 |
10 |
10 |
10 |
10 |
10 |
10 |
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