Combination fuse-switch( CFS) unit compartments shall be designed and type-tested for arcing fault containment where the energy level available to the input terminals of the compartment exceeds1,000,000 A2 seconds.

• 试译：间隔式组合熔丝开关柜（fs）隔室设计应满足，在隔室的输入端子的有效能级超过100万安培秒之处，能进行闪故障包容以及闪故障包容的型式试验。