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METAL OXIDE SURGE ARRESTERS (FOR DISTRIBUTION SUBSTATIONS)
Metal Oxide Surge Arresters for Distribution Substations with nominal voltages from 13.8 kV to 34.5 kV according to CFE specification VA410-17. EPRECSA brand.
| Short description | ASOM-III-25-12 | ASOM-III-31-12 | ASOM-III-25-21 | ASOM-III-31-21 | ASOM-III-25-30 | ASOM-III-31-30 | |
|---|---|---|---|---|---|---|---|
| Rated system voltage Un (kV RMS) | 13.8 | 13.8 | 23 | 23 | 34.5 | 34.5 | |
| Total length (mm) | 320 ± 10 | 400 ± 10 | 480 ± 10 | 480 ± 10 | 560 ± 10 | 640 ± 10 | |
| Creepage distance (mm) | 375 | 520 | 840 | 840 | 1080 | 1300 | |
| Rated surge arrester voltage Ur (kV Eficaz) | 12 | 12 | 21 | 21 | 30 | 30 | |
| Continuous operating voltage Uc | 10.2 | 10.2 | 17 | 17 | 24.5 | 24.4 | |
| Residual voltages: Switching current impulse (kV) | 28 | 28 | 45 | 45 | 64 | 64 | |
| Residual voltages: Lightning current impulse (kV) | 36 | 36 | 58 | 58 | 78 | 78 | |
| Residual voltages: Steep current impulse (kV) | 41 | 41 | 64 | 64 | 91 | 91 | |
| Withstand voltage for insulation: Lightning impulse voltage test(kV) | 46.8 | 46.8 | 75.4 | 75.4 | 101.4 | 101.4 | |
| Withstand voltage for insulation: Power frequency voltage test (kV) | 29.68 | 29.68 | 47.7 | 47.7 | 67.84 | 67.84 | |
| Partial discharges (max) (PC) | 10 | 10 | 10 | 10 | 10 | 10 |
