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SF6 FULLY ENCLOSED AND FULLY INSULATED RING MAIN UNIT
HCM-12 SF6 is a fully insulated, fully enclosed, common box compact medium voltage series ring main unit (RMU). The switchgear and main bus are sealed in a shell filled with SF6 gas, providing a system that is expandable and easy to combine.
CORE FEATURES:



| Item | Scheme C (LBS) | Scheme F (LBS-Fuse) | Scheme V (Circuit Breaker) | ||||
|---|---|---|---|---|---|---|---|
| 12kV | 24kV | 12kV | 24kV | 12kV | 24kV | ||
| Rated Voltage (kV) | 12 | 24 | 12 | 24 | 12 | 24 | |
| Rated Current (A) | 630 | 630 | 125 | 125 | 630 | 630 | |
| Rated Frequency (Hz) | 50 | 50 | 50 | 50 | 50 | 50 | |
| 1Min Power Freq. Voltage | P to P / E | 42 | 65 | 42 | 65 | 42 | 65 |
| Lightning Impulse Voltage | P to P / E | 75 | 125 | 75 | 125 | 75 | 125 |
| Short Time Current (kA/s) | 20/4 | 20/4 | - | - | 20/4 | 20/4 | |
| Short Circuit Making Current (kA) | 50 | 50 | 80 | 80 | 50 | 50 | |
| IP Class (Shell / Gas Chamber) | IP4X | IP67 | IP4X | IP67 | IP4X | IP67 | |





