Heated Cement Resistors JRX Features: 1.Good heat-durability,low temperature coefficient, high overload power, good insulting performance. 2.Operating ambient temperature 3.Insulating resistance value 4.Insulating strength : AC1500V/minute. 5.Resistance tolerance : ±5%, ±10%.
Heated Cement Resistors JRX
Products | Heated Cement Resistors JRX | |
Features | 1.Good heat-durability,low temperature coefficient, high overload power, good insulting performance. 2.Operating ambient temperature 3.Insulating resistance value 4.Insulating strength : AC1500V/minute. 5.Resistance tolerance : ±5%, ±10%. | |
Test Item | Test Condition | Performance |
Temperature Coefficient | Test the resistance value at normal temperature and normal temperature added 100°C, calculate per °C resistance value change rate. |
±300ppm/°C |
Short Time overload | According 10 times rated power to account the voltage or max. overload voltage(get the lower) for 5 seconds. | R≤±(2% R0+0.05Ω) |
Resistance to soldering heat | Immerge into the 350±10°C tin stove for 2~3seconds |
R≤±(1% R0+0.05Ω) |
Solderability | Immerge into the 245±3°C tin stove for 2~3seconds | The soldering area is over 95%. |
Temperature cycling | At -55°C for 30 min. ,then at +25°C for 10~15°C,then at +200°C for 30 min., then at +25°C for 10~15 min., total 5cycles. |
R≤±(1% R0+0.05Ω) |
Load life in humidity | Overload rated voltage or Max. working voltage(get the lower) for 1000hours(1.5hours on and 0.5 hour off).at the 40℃±2℃ and 90~95% relative humidity. |
R≤±(5% R0+0.05Ω) |
Load life in heat | Overload rated voltage or Max. working voltage(get the lower) for 1000hours(1.5hours on and 0.5 hour off).at the 70℃±2℃. | R≤±(5% R0+0.05Ω) |
Nonflammability | Respectively load AC voltage by5,10,16times rated power for 5 minutes. | No visible flame |
Note:The Power, Dimension and cable length can be according customer’s requirement to customize, the tolerance of each sect is ±5mm. |
Single Illustration/A Group of Illustration of Heated Cement Resistors JRX:
Construction Drawing of Heated Cement Resistors JRX:
Rated Power Derating Curve of Heated Cement Resistors JRX: