GB 50054-2011 第6.2.4条
| **** | Overload protection devices should preferably be of the inverse-time characteristic type (such as thermal-magnetic circuit breakers or fuses), and their breaking capacity should be greater than the prospective short-circuit current at the installation point. For distribution circuits serving hotel fire protection equipment (such as emergency lighting and fire pumps), overload protection should act only to provide an alarm and should not cut off the power supply. |