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SH is the SF6 Gas insulated Ring Main Unit, with high performance of Safety、Reliability 、Economic.
| Technical Data | ||||
| 12/24/40.5 kV RMU products range | ||||
| Description | Unit | 12kV | 24kV | 40.5kV |
| Rated frequency | Hz | 50 | 50 | 50 |
| Rated normal current | A | 630 | 630 | 630 |
| Rated lightning impulse withstand voltage | kVp | 75/85 | 125 | 185/(220) |
| Rated power frequency withstand voltage | kV for 1 min | 42 | 50 | 95 |
Rated short time withstand current | kA | 20 kA 4s 25 kA 2s | 20 kA 3 s | 25 kA 3 s |
| Rated peak withstand current | kA | 50/63 | 50 | 63 |
| Internal arc rating for Gas enclosure and cable box | kA, 1 sec | 25 | 25 | 25 |
| Internal arc classification | Class | AF | AF | AF |
| Degree of protection | Class | IP41 / IP67 | IP41 / IP67 | IP41 / IP67 |
