| 摘要 |
A dryer fire protection system has a control circuit for controlling power supplied from a source, via a power cord comprising a neutral line and at least one entry live line, to a load connected with the neutral line and at least one load live line. The control circuit has a relay comprising an electromagnet and a normally open switch. The energized electromagnet closes the switch to allow power to flow between the entry live line and corresponding load live line. An electromagnet control circuit connected between the entry line and neutral line has a plurality of normally closed thermostats in series and mounted within the cabinet external of a drum and ducting associated therewith. Power normally flows through the electromagnetic circuit to energize the electromagnet. Excessive cabinet heat opens at least one thermostat to interrupt power to the electromagnet circuit to de-energize the electromagnet to open the switch.
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