Common fault table of rectifier circuit of induction melting furnace

No DC voltage	Rectified trigger without pulse output	Rectifier trigger regulated power supply without voltage output
		Poor contact of rectifier trigger board
		Whether the synchronous transformer is damaged or welded
	Turn off the power potentiometer
	The blocking protection in the regulation system is damaged
DC voltage is low	Individual rectifier bridge arm KP tube has no trigger pulse	Poor contact of the connector or cause desoldering
		Partial rectifier trigger without pulse output
		The rectifier pulse transformer is damaged: Pulse transformer wire disconnected Short circuit of pulse transformer secondary diode
	Some KP tubes have high trigger power
	Some KP tubes or couplers are damaged
	Poor contact of main circuit contactor or air switch (knife switch)