asimpson
Mechanical
- Aug 6, 2010
- 300
I am doing some R&D work by heating steel to 800C using high temperature cartridge heaters. I am getting some earth leakage around 3mA at 230V AC at high temperatures causing RCD to trip out.
I am in discussion with cartridge heater manufacturer to improve performance of their heaters.
Would there be any safe way of stopping the tripping short of de-rating RCD to higher leakage current.
Measured leakage rises sharply around working temperature and falls when temperature is lowered. I assume insulation in heater is not up to the job.
Thanks
I am in discussion with cartridge heater manufacturer to improve performance of their heaters.
Would there be any safe way of stopping the tripping short of de-rating RCD to higher leakage current.
Measured leakage rises sharply around working temperature and falls when temperature is lowered. I assume insulation in heater is not up to the job.
Thanks