Protective device for air duct electric heater

During the heating operation of the air duct electric heater manufacturer, the medium is heated using an electric heating method, and the electric heating method is used to heat the medium and then send it to the user end. The power supply of the electric heater should be introduced from the corresponding contactor in the corresponding main power control box, and users should design circuits for control according to actual needs. The casing of the pipeline heater and the control cabinet should be reliably grounded. The installation of the body and outer pipes should pay attention to the direction of the inlet and outlet.
When installing terminals, a distance of no less than one meter should be reserved for easy maintenance and repair. Before using a tubular heater, it should be noted that the insulation resistance between the power terminal and the metal shell should not be less than 2 meters, and the relative humidity of the working environment should not exceed 85%. Unplug the power cord and ensure that the incoming line is secure and reliable without loosening. The control cabinet should be installed in a ventilated and dry place with convenient operation.
The heater is equipped with a thermal protection tube, and the power can be automatically cut off. However, only when there is medium used in the cavity, the heater needs to avoid accidents.
The working voltage of the power supply and the voltage of the heater need to be equal, and the main power supply of the heater should be provided separately. The heater needs to be correctly connected to the internal control module circuit in order to continuously invest funds in use. Although the heater has protective devices, all wiring terminals should be checked before use to ensure they are secure, and grounding measures should be taken to ensure safety.
Four, it is necessary to adhere to regular inspections of equipment and circuits, strengthen maintenance, and pay special attention to checking whether contacts, terminals, connectors, and other virtual connections are popular. The electrical parameters of schools and settlements should be regularly measured throughout the year. Check the instrument for temperature control thermal sensors once a year.