Inconsistent output values ​​from three-phase SCR power regulators are not uncommon during on-site commissioning and maintenance. However, whether this phenomenon will impair heating performance depends on the source and severity of the difference. If the discrepancy is merely a deviation in readings from a standard voltmeter, while the three-phase currents are similar, the equipment's heating rate is normal, and temperature control is stable, then this difference is likely related to the SCR's chopper output waveform. Standard instruments are inaccurate for non-sinusoidal voltages, so there's no need to jump to conclusions; simply keep operational records and continue monitoring. Conversely, if the current in one phase is significantly lower than the other two, or even zero, or if the temperature in a specific area of ​​the furnace or drying tunnel fails to reach the set value, then the problem has substantially interfered with the heating process, and the cause must be investi...