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单端加热棒实验测试

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电热管-电加热棒干烧实验

电热管电加热棒干烧实验

JB/T2379-93《金属管状电热元件》行业标准中规定电热管|金属外壳加热棒通断电试验要求:电热元件在规定的试验条件下经历2000次通断电实验不发生损坏;将电热元件接入电源,在发热元件达到充分发热条件后10min开始做2000次通断电操作,通电时间为1.5min,断电时间为0.5min。本文图中所示,将单头加热管放置于空气中干烧,通过调压器将器供电设置与额定电压的1.1倍。
Cartridge heater OPEN AIR TEST:This test was conducted using a 5/8” dia. x 6”(15.8 mm x 152 mm) long, 750 watt 240 volt Cartridge heater. The test was conducted in ambient air 70º F (21º C). A type ‘J’thermocouple was attached to the heater atthe center of the sheath. The voltage was varied through a variac to obtain proper power input for corresponding watt density.

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