... saving compared with SCR-IF 2, stable performance: the protection is complete, no worries. 3, the heating speed: no oxide ... . 4, small: light weight, installation of mobile is convenience. 5, the sensor isolated from the transformer, very safe. 6, environmental ... application:This model is particularly applicable to: Bolt of hot upsetting. Heat treatment of gear, sprocket, crankshaft, spline shaft and ...