MV Metal Enclosed, Air Insulated switchgear with SF6 Load Break Switch and Vacuum Circuit Breaker
The cubicles series are modular, metal-enclosed panels equipped with air insulated busbars and cable compartments as well as with SF6 gas insulated switch disconnectors and earth switches. The system complies with the current standards , its overall dimensions are reduced to a minimum without affecting the personnel safety. The outstanding feature is the reduction of space and installation and maintenance times
GENERAL DESCRIPTION
The cubicles series are modular, metal-enclosed panels equipped with
air insulated busbars and cable compartments as well as with SF6
gas insulated switch disconnectors and earth switches.
The system complies with the current standards, its overall dimensions are reduced to a minimum
without affecting the personnel safety.
The outstanding feature is the reduction of space and installation and maintenance times.
SPECIFICATION | |||
| Rated voltage | ( kV ) | 12 | 24 |
| Withstand voltage to earth and | ( kV ) | 28 | 50 |
| between poles 50 Hz 1 min | |||
| Impulse withstand voltage to earth | ( kV ) | 75 | 125 |
| and between poles | | | |
| Rated current | ( A ) | 400÷630 | 400÷630 |
| Breaking capacity for active circuit | ( A ) | 400÷630 | 400÷630 |
| ( Cos ø 0.7 ) | | | |
| Breaking capacity for load | ( A ) | 25 | 25 |
| transformer | |||
| Breaking capacity for no load line | ( A ) | 25 | 25 |
| and cables | | | |
| Short time current 1s | (kA ) | 12.5÷20* | 12.5÷20* |
| Short time current 2s | (kA ) | 12.5÷20* | 12.5÷20* |
| Short time current 3s | (kA ) | 12.5÷16 | 12.5÷16 |
| Rated making current | (kA ) | 31.5÷63 | 31.5÷63 |
| Transfer current | ( A ) | 2100 | 800 |
| Internal arc proof 0,5 s | (kA ) | 12.5÷16 | 12.5÷16 |
| Internal arc proof 1 s | (kA ) | 14 | 14 |
| * Havebeen tested up to 25kA/2sec |