Without converter single phase load of coreless induction furnace connects directly network supply resulting in damage to 3 phase centre fed of network supply or serious unbalance of system.

• 工频无芯感应电炉不需要变频设备,单相负载直接接入三相电网时,破坏了电网的三相对称运行,甚至造成系统严重不平衡。