SDY-QX放電球隙
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表1—求接地的球隙適用于交流電壓、負(fù)極性的雷電沖擊電壓和長波尾沖擊及兩種極性的直流電壓KV（峰值）
|
球隙距離 cm |
球 直 徑 cm |
|||||
|
5 |
6.25 |
10 |
12.5 |
15 |
25 |
|
|
0.20 |
8.0 |
|||||
|
0.25 |
9.6 |
|||||
|
0.30 |
11.2 |
|||||
|
0.40 |
14.3 |
14.2 |
||||
|
0.50 |
17.4 |
17.2 |
16.8 |
16.8 |
16.8 |
|
|
0.60 |
20.4 |
20.2 |
19.9 |
19.9 |
19.9 |
|
|
0.70 |
23.4 |
23.2 |
23.0 |
23.0 |
25.0 |
|
|
0.80 |
26.3 |
26.2 |
26.0 |
26.0 |
26.0 |
|
|
0.90 |
29.2 |
29.1 |
28.9 |
28.9 |
28.9 |
|
|
1.0 |
32.0 |
31.9 |
31.7 |
31.7 |
31.7 |
31.7 |
|
1.2 |
37.6 |
37.5 |
37.4 |
37.4 |
37.4 |
37.4 |
|
1.4 |
42.9 |
42.9 |
42.9 |
42.9 |
42.9 |
42.9 |
|
1.5 |
45.5 |
45.5 |
45.5 |
45.5 |
45.5 |
45.5 |
|
1.6 |
48.1 |
48.1 |
48.1 |
48.1 |
48.1 |
48.1 |
|
1.8 |
53.0 |
53.5 |
53.5 |
53.5 |
53.5 |
53.5 |
|
2.0 |
57.5 |
56.5 |
59.0 |
59.0 |
59.0 |
59.0 |
|
2.2 |
61.5 |
63.0 |
64.5 |
64.5 |
64.5 |
64.5 |
|
2.4 |
65.5 |
67.5 |
69.5 |
70.0 |
70.0 |
70.0 |
|
2.6 |
(69.0) |
72.0 |
74.5 |
75.0 |
75.5 |
75.5 |
|
2.8 |
(72.5) |
76.0 |
79.5 |
80.0 |
80.5 |
81.0 |
|
3.0 |
(75.5) |
79.5 |
84.0 |
85.0 |
85.5 |
86.0 |
|
3.5 |
(82.5) |
(87.5) |
95.5 |
97.0 |
98.0 |
99.0 |
|
4.0 |
(88.5) |
(95.0) |
105 |
108 |
110 |
112 |
|
4.5 |
(101) |
115 |
119 |
122 |
125 |
|
|
5.0 |
(107) |
123 |
129 |
133 |
137 |
|
|
5.5 |
(131) |
138 |
143 |
149 |
||
|
6.0 |
(138) |
146 |
152 |
161 |
||
|
6.5 |
(144) |
(154) |
161 |
173 |
||
|
7.0 |
(150) |
(161) |
169 |
184 |
||
|
7.5 |
(155) |
(168) |
177 |
195 |
||
|
8.0 |
(174) |
(185) |
206 |
|||
|
9.0 |
(185) |
(198) |
226 |
|||
|
10 |
(195) |
(209) |
244 |
|||
|
11 |
(219) |
261 |
||||
|
12 |
(229) |
275 |
||||
表2—求接地的球隙適用于正極性的雷電沖擊電壓和長波尾沖擊電壓KV
(峰值)
|
球隙距離 cm |
球 直 徑 cm |
|||||
|
5 |
6.25 |
10 |
12.5 |
15 |
25 |
|
|
0.30 |
11.2 |
|||||
|
0.40 |
14.3 |
14.2 |
||||
|
0.50 |
17.4 |
17.2 |
16.8 |
16.8 |
16.8 |
|
|
0.60 |
20.4 |
20.2 |
19.9 |
19.9 |
19.9 |
|
|
0.70 |
23.4 |
23.2 |
23.0 |
23.0 |
23.0 |
|
|
0.80 |
26.3 |
26.2 |
26.0 |
26.0 |
26.0 |
|
|
0.90 |
29.2 |
29.1 |
28.9 |
28.9 |
28.9 |
|
|
1.0 |
32.0 |
31.9 |
31.7 |
31.7 |
31.7 |
31.7 |
|
1.2 |
37.3 |
37.6 |
37.4 |
37.4 |
37.4 |
37.4 |
|
1.4 |
43.3 |
43.2 |
42.9 |
42.9 |
42.9 |
42.9 |
|
1.5 |
46.2 |
45.9 |
45.5 |
45.5 |
45.5 |
45.5 |
|
1.6 |
49.0 |
48.6 |
48.1 |
48.1 |
48.1 |
48.1 |
|
1.8 |
54.4 |
54.0 |
53.5 |
53.5 |
53.5 |
53.5 |
|
2.0 |
59.5 |
59.0 |
59.0 |
59.0 |
59.0 |
59.0 |
|
2.2 |
64.5 |
64.0 |
64.5 |
64.5 |
64.5 |
64.5 |
|
2.4 |
69.0 |
69.0 |
70.0 |
70.0 |
70.0 |
70.0 |
|
2.6 |
(73.0) |
73.5 |
75.5 |
75.5 |
75.5 |
75.5 |
|
2.8 |
(77.0) |
78.0 |
80.5 |
80.5 |
80.5 |
80.5 |
|
3.0 |
(81.0) |
82.0 |
85.5 |
85.5 |
85.5 |
86.0 |
|
3.5 |
(90.0) |
(91.5) |
97.5 |
98.0 |
98.5 |
99.0 |
|
4.0 |
(97.5) |
(101) |
109 |
110 |
111 |
112 |
|
4.5 |
(103) |
120 |
122 |
124 |
125 |
|
|
5.0 |
(115) |
130 |
134 |
136 |
138 |
|
|
5.5 |
(139) |
145 |
147 |
151 |
||
|
6.0 |
(148) |
155 |
158 |
163 |
||
|
6.5 |
(156) |
(164) |
168 |
175 |
||
|
7.0 |
(163) |
(173) |
178 |
187 |
||
|
7.5 |
(170) |
(181) |
187 |
199 |
||
|
8.0 |
(189) |
(196) |
211 |
|||
|
9.0 |
(203) |
(212) |
233 |
|||
|
10 |
(215) |
(226) |
254 |
|||
|
11 |
(238) |
273 |
||||
|
12 |
(219) |
291 |
||||
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