ARM Series SF6 Gas Circuit Breakers are one of the main equipment of medium voltage air insulated switchgear. The curcuit breaker mechanism is filled with SF6 gas, which is 5 times heavier than air and has a puncture resistance 3 times higher. For this reason, it has found a wide range of application in medium and high voltage systems as an arc extinguishing and insulation medium.
Type tests of SF6 Gas Circuit Breakers produced at 36kV and 24kV rated voltage have been completed in accordance with the IEC 62271-100 standard. SF6 Gas Circuit Breakers have a wide range of uses as they are cost-effective solutions.
Technical Specifications
TYPE | ARM-36-G-01 | ARM-24-G-01 |
RATED VOLTAGE | 36 kV | 24 kV |
ISOLATION VOLTAGE | 70 kV (active-1mn) | 50 kV (active-1mn) |
LIGHTNING IMPACT WITHSTAND VOLTAGE | 170(peak – 1.2-50ys) | 125(peak – 1.2-50ys) |
RATED CURRENT | 630 A | 630 A |
RATED FREQUENCY | 50 Hz | 50 Hz |
SHORT CIRCUIT RESISTANCE | 16 kA | 16 kA |
PEAK WITHSTAND CURRENT | 40 kA | 40 kA |
SHORT CIRCUIT DURATION | 3 sc. | 3 sc. |
WORKING CYCLE | A-0,3 sc-KA-3 mn-KA | A-0,3 sc-KA-3 mn-KA |
CLASS | E2, C2, M2 | E2, C2, M2 |