北京第一机床厂根据电渣焊接工艺的要求,自己设计,自己施工,就地取材,试制成功一台容量150仟伏安的土变压器,一次电压380/220伏,二次电压调整范围69～78/40～45伏,输出电流调整范围300～2500安。经过实际使用,效果很好。变压器的工作原理同一般磁分路式电焊机一样,电压是靠调整一次或二次线圈匝数的多少来调节,电流是 Beijing First Machine Tool Plant according to the requirements of electroslag welding process, their own design, their own construction, local materials, trial success of a capacity of 150 kVA earth transformer, a voltage 380/220 volts, the secondary voltage adjustment range 69 ~ 78/40 ~ 45 volts, the output current adjustment range of 300 ~ 2500 amps. After actual use, the effect is very good. Transformer works with the same general magnetic shunt welding machine, the voltage is adjusted by the number of turns or secondary coil to adjust the number of current is