Silicon Nitride Heating Elements for Solar Water Heater 3500W

Model Number: (MKF-02)-#0220 Key Specifications/Special Features: Silicon Nitride Ceramic Heater Device for Water HeaterSilicon Nitride Ceramic Heating Element is consist of the silicon nitride ceramic as carrier and tungsten filament as heating supply.The Si3N4 ceramic heating element is shaped by dry pressing and cold isostatic pressing, sintered by vacuum hot-pressing sintering, finished by series of mechanical grinding machines, then an uniform and compact ceramic is produced.Characteristics:-It have the absolutely electrical insulator and high efficiency heat transfer medium which can be directly contact with liquid such as water, resulting absolutely safe;-The high heating efficiency, anti-scale, excellent thermostability, excellent acid and alkali corrosion resistance ;-The-long working life, eco-friendly and energy saving. If it is broken in the water, the water is also absolutely safe.Applications:household; commercial and industrial applications; instant water heater; direct liquid heater, fast electric faucet; steam foot bath product; thermostatic water bath; steamed rice production and so on.Technical Data：Rated Voltage 110V, 220V
Volume density ≥3.2g/cm3
Hardness HRA90-92
Bending Strength
800—1200Mpa (Room Temp.)
Heat Conductivity 23-25W/（m-k）
Volume Resistivity at Room Temperature 1014Ω.cm
Working Life 5000—10000 hours
Rated Power 1000W—3000W (single piece)
Tolerance of rated power + 5%;-10%
High Electric insulation strength 2500V, 50Hz at room temperature, no breakdown for 1 minute
Leakage current
<0.5mA under normal operating condition;
<10mA in liquid after broken
Acid corrosion resistance
5% H2So4 solution for 6h,
the corrosion rate < 10 g/m2.h
Alkali corrosion resistance
30% NaOH solution for 6h,
the corrosion rate < 0.6 g/m2.h