| 摘要 |
PURPOSE: A safety device for protecting a hot wire of a non-magnetic field is provided to cut off power inputted to a hot wire of a non-magnetic field by confirming short circuit using first and second heating wires. CONSTITUTION: A safety device for protecting a hot wire of a non-magnetic field is composed as follows. One end(a) of a first heating wire(31) of a non-magnetic field and one end(b) of a second heating wire(32) are connected to an AC power source through a power cutoff unit(20). A short circuit detection unit(40) is connected to the other ends(c,d) of the first and second heating wires of the non-magnetic field and detects a short circuit signal. When the short circuit detection unit transmits the short circuit signal to the power cutoff unit, the power cutoff unit cuts off power. |
