Reasons for the slow temperature rise of the laboratory resistance furnace

1. The power supply voltage is normal and the controller is working normally. It is possible that some heating wires on the electric furnace are broken. You can check with a multimeter and replace them with electric furnace wires of the same specification.

2. The power supply voltage is normal, but the working voltage of the electric furnace is low. The reason is that the voltage drop of the power supply line is too large or the socket and the control switch are not in good contact, which can be adjusted and replaced.

3. The power supply voltage is lower than the normal voltage, and the heating power is insufficient when the electric furnace is working. The three-phase power supply lacks phase, which can be adjusted and repaired.