JY Series Sheathed Electric Heater Parameters Rated Voltage: Single-phase 220V, Three-phase 380V Surface Heating Power: ≤3W/CM2 Operating Temperature: ≤300℃ Working Medium: Mineral Oil Working Pressure: ≤0.8Mpa Introduction of Sheathed Heater SRY6-5 220V 8kw: Technical Indicators: Model Parameter Power HRY1 HRY2 HRY3 Voltage (V) Surface Power (w/cm2) Dimensions mm Voltage (V) Surface Power (w/cm2) Dimensions mm Voltage (V) Surface Power (w/cm2) Dimensions mm 1KW 220 1.4 440 360 380 1.4 440 360 2KW 380 1.0 1200 1120 220 2.0 590 510 380 2.0 590 510 3KW 220 2.1 790 710 380 2.1 790 710 4KW 380 1.8 1120 1120 220 2.2 1000 920 380 2.2 1000 920 5KW 380 2.3 1200 1120 6KW 380 2.8 1120 1120 8KW 380 2.4 1750 1650 JY Series Sheathed Electric Heater Specifications ![]() Usage, Maintenance and Precautions: 1. Dimension "B" in the outline drawing must be fully immersed in oil to avoid damaging the component. The heated oil should be non-corrosive. 2. When melting solid oils such as asphalt and paraffin, reduce the voltage during use, and then increase to rated voltage after melting to prevent heat concentration and reduce component lifespan. 3. If carbon deposits are found on the tube surface, they must be removed before use to avoid reducing efficiency or even burning out the component. 4. Components should be stored in a dry place. If the insulation resistance drops below 1MW due to long-term storage, dry in an oven at about 200℃ for several hours (or apply low voltage to the component for several hours) to restore insulation resistance. Introduction: Electric heating tube, also known as heating tube or heating element, is a tubular electric heating element. It consists of a coiled heating wire (resistance wire) placed inside a metal tube. It features simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation, and long service life. It is widely used in various devices such as saltpeter tanks, water tanks, oil tanks, acid and alkali tanks, molten metal furnaces, air heating furnaces, drying ovens, drying boxes, and hot press molds. Electric heating tubes are electrical components specifically designed to convert electrical energy into heat. Due to their low cost, convenient use, easy installation, and no pollution, they are widely used in various heating applications. Features: This electric heater consists of a heating core and a protective sheath. The heating core uses a tubular electric heating element as the heat source.The protective sheath is made of carbon steel pipe or stainless steel pipe.It has large heat dissipation area and fast heat transfer. The terminal connection part is divided into ordinary type with iron drawn cup-shaped cover and special type with bolt-type explosion-proof cover seal. It meets the requirements of explosion-proof mark dⅡBT4 and protection level IP54 series standards. The electric heater is connected to the oil tank body by flange. The sheath isolates the heating core from the heated oil. When replacing the electric heater, there is no need to drain the oil from the tank; simply pull out the heating core and replace it with a new one, making maintenance convenient. The sheath has a large contact area with the heated oil, so the oil will not carbonize due to local high temperature. It has long service life, safety, and reliability. ![]() |




