Single circuit breaker breaking capacity is more difficult to achieve a breakthrough

Limited to the current level of manufacturing processes and materials, a single circuit breaker breaking capacity is more difficult to achieve a breakthrough, focusing on long-term development of the grid, parallel technology research will be to increase capacity circuit breaker is an effective way [2-4]. High-pressure systems are widely used in  air circuit breaker  gas SF6 circuit breaker, does not meet the energy saving industry trends. Single fracture level of pressure and vacuum circuit breaker to open only a short distance  electric meter  linearly gap, the gap distance 10mm open only after the root square value proportional to [5-6], so the single fracture  electri cenergy meter  breaker more difficult to raise the level of voltage. Experiments show that the vacuum medium, multiple small gap in series to get the voltage level equal to the distance over a long gap voltage level.