电力线路上的变压器、电容器、电抗器、断路器、隔离开关、避雷器、互感器、熔断器、计量仪表装置、配电室、箱式变电站及其有关辅助设施;

• Transformers, capacitors, resistors, circuit breakers, isolation switches, lightening arresters, mutual inductors, fuses, measuring instruments and meters, power distribution rooms, box-type sub-stations and other related ancillary equipment on the power lines.