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.