在灭火战斗中，常常遇到设备带电的情况，有的情况紧急，为了争取战机，必须在带电情况下进行扑救。
In fire fighting, equipment is often charged. In some emergency situations, in order to fight for fighters, it is necessary to carry out fire fighting under charged conditions.
有时因生产需要或其它原因无法切断电源时，或遇切断电源后仍有较高的残留电压时，也需要带电灭火，带电灭火关键是解决触电危险，当采取各种安全措施后，对带电的变压器火灾的扑救方法就和断电后的扑救方法相同。
Sometimes when the power supply can not be cut off due to production needs or other reasons, or when there is still a high residual voltage after the power supply is cut off, live fire extinguishing is also needed. The key to live fire extinguishing is to solve the electric shock hazard. When various safety measures are taken, the fire extinguishing method for live transformer is the same as that after power failure.