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IEC/BS String Electrical Ratings - PAGE1

Standard Profile
Standard profile suspension insulator string withstand voltages based on the test procedure of International Standard IEC 60383-93 and British Standard BS 60383
 
 
DIAMETER 255mm / SPACING 127mm 
DIAMETER 255MM / SPACING 146mm
DIAMETER 280mm / SPACING 146mm
CAT NO.
F70/170 - F100/127 - F12/127
F70/146 - F100/146 - F12/146 - F160/146
NO. OF UNITS
POWER FREQUENCY WITHSTAND VOLTAGE (kV)
LIGHTNING IMPULSE WITHSTAND VOLTAGE (kV)
POWER FREQUENCY WITHSTAND VOLTAGE (kV)
LIGHTNING IMPULSE WITHSTAND VOLTAGE (kV)
DRY
WET
DRY
WET
2 113 65 175 130 75 195
3 157 100 245 180 115 275
4 204 135 320 235 155 360
5 244 170 395 280 195 430
6 283 200 460 325 230 505
7 326 231 525 375 265 580
8 365 261 585 420 300 660
9 404 283 660 465 325 730
10 444 326 720 510 375 800
11 478 357 785 550 410 880
12 518 383 850 595 440 955
13 552 413 920 635 475 1025
14 587 444 985 675 510 1095
15 622 470 1050 715 540 1160
16 657 496 1115 755 570 1230
17 696 522 1180 800 600 1300
18 744 552 1240 855 635 1370
19 761 578 1310 875 665 1440
20 796 609 1365 915 700 1510
21 826 635 1425 950 730 1575
22 861 661 1490 990 760 1640
23 896 687 1550 1030 790 1710
24 926 713 1610 1065 820 1775
25 957 744 1670 1100 855 1850
26 992 765 1735 1140 880 1920
27 1022 792 1800 1175 910 1990
28 1057 813 1860 1215 935 2060
29 1092 839 1920 1255 965 2130
30 1122 861 1980 1290 990 2200

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