| Brand | ROCKWILL |
| Model NO. | 3 to 120kV MCOV Arrester |
| Rated voltage | 120kV |
| Series | YH5WX |
Arrester assemblies can be customized for all distribution and transmission lines.
Selection of arrester MCOV size is based upon the maximum continuous voltage that is applied across the arrester in service (line-to-ground). For arresters on effectively grounded neutral systems, this is normally the maximum line-to-ground voltage Example: 84 kV on a 138 kV system. For ungrounded or impedance-grounded systems, the MCOV should be at least 90 percent of maximum phase-to-phase voltage.
For more information about arrester selection, please contact your Hubbell Power Systems representative.
Eliminate lightning interruptions with Protecta*Lite Arresters
Custom designs available up to 765 kV
Protecta*Lite Arresters offer protection on both shielded and unshielded lines
| Electrical Characteristics | |||||||||
| MCOV (kV) | Rated Voltage (kV) | Temporary overvoltage capability (kV) | Max steep current impulse residual voltage (kV) | Max switching impulse residual voltage (kV) | Max lightning impulse residual voltage (kV) | ||||
| 1s | 10s | 10 kA | 0.5 kA | 5 kA | 10 kA | 20 kA | 40 kA | ||
| 2.55 | 3 | 3.9 | 3.7 | 10.6 | 7.6 | 9 | 9.9 | 11.1 | 13.2 |
| 5.1 | 6 | 7.8 | 7.4 | 21.3 | 15.3 | 18 | 19.8 | 22.3 | 26.5 |
| 7.65 | 9 | 11.7 | 11.1 | 31.2 | 22.4 | 26.4 | 29 | 32.6 | 38.8 |
| 8.4 | 10 | 12.9 | 12.2 | 34 | 24.4 | 28.8 | 31.6 | 35.6 | 42.3 |
| 10.2 | 12 | 15.6 | 14.8 | 40.4 | 29 | 34.2 | 37.6 | 42.3 | 50.3 |
| 12.7 | 15 | 19.5 | 18.4 | 51.4 | 36.9 | 43.5 | 47.8 | 53.8 | 64 |
| 15.3 | 18 | 23.5 | 22.2 | 60.6 | 43.5 | 51.3 | 56.4 | 63.5 | 75.5 |
| 17 | 21 | 26.1 | 24.7 | 68.3 | 49 | 57.8 | 63.5 | 71.4 | 85 |
| 22 | 27 | 33.7 | 31.9 | 91.8 | 65.9 | 77.7 | 85.4 | 96.1 | 114 |
| 24.4 | 30 | 37.4 | 35.4 | 101 | 72.5 | 85.5 | 94 | 106 | 126 |
| 29 | 36 | 44.5 | 42.1 | 121 | 87 | 103 | 113 | 127 | 151 |
| 31.5 | 39 | 48.3 | 45.7 | 129 | 92.5 | 109 | 120 | 135 | 161 |
| 33.6 | 42 | 51.5 | 48.7 | 137 | 98 | 116 | 127 | 143 | 170 |
| 36.5 | 45 | 56 | 52.9 | 152 | 109 | 129 | 142 | 160 | 190 |
| 39 | 48 | 59.8 | 56.6 | 163 | 117 | 138 | 152 | 171 | 204 |
| 42 | 54 | 64.4 | 60.9 | 171 | 122 | 144 | 159 | 178 | 212 |
| 48 | 60 | 73.6 | 69.6 | 197 | 142 | 167 | 183 | 206 | 246 |
| 57 | 72 | 87.4 | 82.7 | 236 | 169 | 200 | 220 | 247 | 294 |
| 70 | 90 | 107 | 102 | 285 | 204 | 241 | 265 | 298 | 355 |
| 74 | 90 | 113 | 107 | 303 | 218 | 257 | 282 | 318 | 378 |
| 76 | 96 | 117 | 110 | 303 | 218 | 257 | 282 | 318 | 378 |
| 78 | 96 | 120 | 113 | 311 | 223 | 263 | 289 | 325 | 387 |
| 84 | 108 | 129 | 122 | 342 | 245 | 289 | 318 | 357 | 425 |
| 88 | 108 | 135 | 128 | 354 | 254 | 300 | 330 | 371 | 442 |
| 98 | 120 | 150 | 142 | 394 | 283 | 334 | 367 | 413 | 491 |
| Physical Characteristics | |||||
| MCOV | Rated Voltage | Creepage Distance | Arrester only Height | Lightning Withstand Voltage | Arrester only Weight |
| kV | kV | in (mm) | in (mm) | kV peak | lbs (kg) |
| 2.55 | 3 | 8.5 (216) | 3.4 (86) | 80 | 1.3 (0.6) |
| 5.1 | 6 | 11.3 (287) | 4.2 (107) | 95 | 1.7 (0.8) |
| 7.65 | 9 | 14.4 (366) | 5.3 (135) | 110 | 2.2 (1) |
| 8.4 | 10 | 14.4 (366) | 5.3 (135) | 110 | 2.2 (1) |
| 10.2 | 12 | 17.0 (432) | 5.8 (148) | 115 | 2.5 (1.1) |
| 12.7 | 15 | 25.2 (640) | 8.2 (208) | 155 | 3.7 (1.7) |
| 15.3 | 18 | 25.2 (640) | 8.2 (208) | 155 | 3.6 (1.7) |
| 17 | 21 | 28.1 (714) | 9.0 (229) | 160 | 4.1 (1.8) |
| 22 | 27 | 36.5 (927) | 11.9 (302) | 195 | 5.1 (2.3) |
| 24.4 | 30 | 39.7 (1008) | 13.0 (331) | 215 | 5.6 (2.5) |
| 29 | 36 | 42.3 (1074) | 13.6 (344) | 225 | 5.9 (2.7) |
| 31.5 | 39 | 50.5 (1282) | 15.9 (404) | 240 | 7.1 (3.2) |
| 33.6 | 42 | 53.4 (1356) | 16.7 (425) | 255 | 7.5 (3.4) |
| 36.5 | 45 | 56.3 (1430) | 17.6 (446) | 270 | 7.9 (3.6) |
| 39 | 48 | 67.5 (1714) | 21.3 (540) | 320 | 9.4 (4.2) |
| 42 | 54 | 75.7 (1922) | 23.6 (600) | 350 | 10.5 (4.8) |
| 48 | 60 | 70.7 (1795) | 22.4 (569) | 330 | 9.9 (4.5) |
| 57 | 72 | 81.5 (2070) | 25.3 (642) | 370 | 11.3 (5.1) |
| 70 | 90 | 98.8 (2509) | 30.9 (786) | 445 | 13.7 (6.2) |
| 74 | 90 | 126 (3202) | 39.1 (992) | 550 | 17.4 (7.9) |
| 76 | 96 | 126 (3202) | 39.1 (992) | 550 | 17.4 (7.9) |
| 78 | 96 | 126 (3202) | 39.1 (992) | 550 | 17.4 (7.9) |
| 84 | 108 | 141 (3571) | 43.2 (1098) | 600 | 19.5 (8.8) |
| 88 | 108 | 151 (3843) | 46.8 (1188) | 650 | 20.8 (9.4) |
| 98 | 120 | 163 (4137) | 50.1 (1272) | 690 | 22.5 (10.2) |
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