电枢“短路、接地”检查仪(图1)供检查直流牵引电动机电枢绕组匝间短路和接地之用。一、工作原理(见图2) 1.电枢绕组匝间短路检查本仪器有二只由矽钢片叠制而成的型铁芯,上面绕有线圈,一只接仪器的信号输出端,称为输出器;一只接仪器的指示部分,称为取样器。当输出器及取样器放在同一电枢槽时,则输出器与该槽内绕组组成一互感器,该 Armature “short, ground” tester (Figure 1) for checking DC traction motor armature winding inter-turn short and ground. First, the working principle (see Figure 2) 1. Armature winding turn-to-turn short circuit inspection The instrument has two laminated steel core made of silicon steel, coil wound above, a signal output of the instrument, Known as the output device; an indicator part of the instrument, called the sampler. When the output device and the sampler are placed in the same armature slot, the output device and the winding in the slot form a mutual inductor