Product Introduction：
A line post insulator is an insulator of generally columnar shape,having means for direct and rigid mounting. With the replaceable feature by pin insulators and insulators are mainly used to insulate and support conductors.We manufacture insulators in accordance with the standards of IEC60383,ANSI, BS as well as customers' special requirements. ANSI Class
TYPE 57-1,57-2,57-3,57-4,57-5,57-6, 57-11,57-12,57-13,57-14,57-15,57-16,57-21,57-22,57-23,57-24,57-25,57-26,57-31,57-32, 57-33,57-34,57-35,57-36
Product parameter table:
Standard Particulars
|
Cat. No. |
0301 020 |
0301 025 |
0301 035 |
0301 045 |
0301 055 |
0301 066 |
0301 088 |
||
|
Usual line voltage/kV |
20 |
25 |
35 |
45 |
55 |
66 |
88 |
||
|
ANSI Class |
_ |
57-1 |
57-2 |
57-3 |
57-4 |
57-5 |
57-6 |
||
|
Designation of Neck |
F |
F |
F |
F |
N |
N |
N |
||
|
Height” A”/in(mm) |
7-1/2 (191) |
8-3/4 (222) |
12 (305) |
14-1/2 (369) |
17 (432) |
20 (508) |
23 (584) |
||
|
Diameter ”B”/in(mm) |
5-1/2 (140) |
5-3/4 (146) |
5-3/4 (146) |
6 (512) |
7 (178) |
7 (178) |
7-5/16(185) |
||
|
Diameter ”C” /in(mm) |
3-3/4 (95) |
4 (102) |
4 (102) |
4-1/2 (114) |
5 (127) |
5 (127) |
5-1/2 (140) |
||
|
Thread ”D” /in(mm) |
3/4-10 UNC |
3/4-10 UNC |
3/4-10 UNC |
3/4-10 UNC |
3/4-10 UNC |
3/4-10 UNC |
7/8-9UNC |
||
|
Min. leakage distance/in(mm) |
11 (280) |
14 (356) |
22 (559) |
29 (737) |
40 (1015) |
45 (1145) |
53 (1345) |
||
|
Dry arcing distance/in(mm) |
5-3/4 (146) |
6-1/2 (165) |
9-1/2 (241) |
12-1/4 (311) |
14-1/2 (368) |
17-1/4 (438) |
19-1/4(489) |
||
|
Cantilever strength/lb(kN) |
2000 (9) |
2800 (12.5) |
2800 (12.5) |
2800 (12.5) |
2800 (12.5) |
2800 (12.5) |
2800 (12.5) |
||
|
Average flashover voltage |
Low Frequency |
Dry/kV |
80 |
80 |
110 |
125 |
150 |
175 |
200 |
|
Wet/kV |
55 |
60 |
85 |
100 |
125 |
150 |
170 |
||
|
Critical Impulse |
Pos. /kV |
105 |
130 |
180 |
210 |
255 |
290 |
330 |
|
|
Neg. /kV |
130 |
155 |
205 |
260 |
340 |
380 |
425 |
||
|
Withstand voltage |
Low frequency |
Dry/kV |
60 |
60 |
90 |
100 |
120 |
140 |
160 |
|
Wet/kV |
40 |
45 |
65 |
80 |
100 |
120 |
135 |
||
|
Impulse/kV |
85 |
110 |
150 |
170 |
200 |
235 |
250 |
||
|
Radio influence voltage data |
Test voltage/kV |
15 |
15 |
22 |
30 |
44 |
44 |
44 |
|
|
Max. RIV at 1,000kHz/uV |
50 |
100 |
100 |
200 |
200 |
200 |
200 |
||
|
Net weight/lb(kg) |
8.5 (3.9) |
11 (5) |
17 (7.7) |
22 (10) |
36 (16) |
46 (21) |
51 (23) |
||
Hot Tags: 33kv ceramic electrical line post insulator, China 33kv ceramic electrical line post insulator manufacturers, suppliers, factory, IEC Porcelain Line Post Insulator, ANSI Porcelain Line Post Insulator, 33kv Ceramic Electrical Line Post Insulator, Porcelain Line Post Insulator