During on-site verification, take a 220V 1500W element as an example: current I=P/U=1500/220≈6.82A, resistance R=U/I≈32.27Ω. Operation and maintenance personnel can use this to check the selection of circuit breakers and contactors for the loop, avoiding overload or underload operation.
The design standard is 0.7W/cm², and surface load has multiple specifications available. Reasonable selection can reduce the risk of oil carbonization and scorching, extend the service life of heat transfer oil and other media, and reduce the frequency of shutdown cleaning.
The element lead wires should be reliably crimped and used in coordination with temperature control devices and over-temperature protection circuits. Check insulation resistance before energizing, monitor the balance of three-phase current during operation, and troubleshoot promptly when the deviation is too large.
Suitable for heat transfer oil furnaces, oil tanks, water tanks, and mold heating, etc. The threaded type or straight rod type structure can be selected according to the container shape and installation space, and the heat transfer temperature is set according to process requirements.
