CA01082E_Catalog 30

Products – Porcelain Housed Surge Arresters – MH3

MH3 Electrical Characteristics

Temporary Overvoltage Capability (kVrms)

Maximum Steep Current Impulse Residual Voltage (kV)

Maximum Switching Impulse Residual Voltage (kV)

Base Arrester Catalog Number

Maximum Lightning Impulse Residual Voltage (kV)

Um (kV)

Ur (kV)

Uc (kV)

1s

10s 134 140 147 165 171 183 195 202 220 232 220 232 244 263 269 263 269 281 293 336 342 366 379 385 397 403 428

10kA

0.5kA 1kA 2kA 5kA 10kA 20kA 40kA

MH3170wx132yz 170 132 105.6 144 MH3170wx138yz 170 138 110.4 150 MH3170wx144yz 170 144 115.2 157 MH3170wx162yz 170 162 129.6 176 MH3170wx168yz 170 168 134.4 183 MH3245wx180yz 245 180 144 196 MH3245wx192yz 245 192 153.6 209 MH3245wx198yz 245 198 158.4 215 MH3245wx216yz 245 216 172.8 235 MH3245wx228yz 245 228 182.4 248 MH3300wx216yz 300 216 172.8 235 MH3300wx228yz 300 228 182.4 248 MH3300wx240yz 300 240 192 261 MH3300wx258yz 300 258 206.4 281 MH3300wx264yz 300 264 211.2 287 MH3362wx258yz 362 258 206.4 281 MH3362wx264yz 362 264 211.2 287 MH3362wx276yz 362 276 220.8 300 MH3362wx288yz 362 288 230.4 313 MH3420wx330yz 420 330 264 359 MH3420wx336yz 420 336 268.8 366 MH3420wx360yz 420 360 288 392 MH3420wx372yz 420 372 297.6 405 MH3420wx378yz 420 378 302.4 411 MH3420wx390yz 420 390 312 424 MH3420wx396yz 420 396 316.8 431 MH3420wx420yz 420 420 336 457

347 362 378 425 440 473 504 520 567 598 567 598 629 676 693 676 693 724 755 865 880 944 975 991

255 266 278 313 324 347 370 382 417 439 417 439 462 497 509 497 509 532 554 636 647 693 716 728 751 762 808

265 276 288 324 336 360 384 396 432 456 432 456 480 516 528 516 528 552 576 660 671 720 743 756 779 792 839

277 289 301 339 351 377 401 414 452 477 452 477 502 539 552 539 552 577 602 690 702 752 777 790 814 827 877

302 315 329 370 383 411 438 452 493 520 493 520 547 588 602 588 602 630 657 753 766 821 848 862 889 903

323 337 352 396 410 440 469 484 528 557 528 557 586 630 645 630 645 674 703 806 820 879 908

354 369 385 434 449 482 514 530 578 610 578 610 642 690 706 690 706 738 770 883

395 412 430 484 501 538 574 592 646 681 646 681 717 770 789 770 789 824 860 986

898 1003 963 1075 994 1110

923 1011 1129 952 1042 1164 967 1059 1183

1022 1038 1100

957 1025 1122 1254

Page 50 | October 2023