Leakage detecting device for electrical appliance

Details Leakage detecting device for electrical appliance Leakage detecting device for electrical appliance

1986-06-04

1987-11-10

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 50, 361178, 307118, H02H 300

Patent

active

047061537

ABSTRACT:
A leakage detecting device for electrical appliance is provided with electrodes (17) for detecting a state in which an electrical appliance such as a hair dryer is submerged in water. When the electrodes (17) are in a short-circuited state, relay means (3) is driven to open a contact (7). As a result, supply of the power supply voltage from a commercial power source (1) to the loads such as a motor (15), a heater (16) and the like is stopped so that an accident due to leakage can be prevented in such cases as a case in which the electrical appliance has been dropped into the water.

REFERENCES:
patent: 1667655 (1928-04-01), Clothier et al.
patent: 3128417 (1964-04-01), Brown et al.
patent: 3813579 (1974-05-01), Doyle et al.
patent: 4044224 (1977-08-01), Jenkins et al.
patent: 4464582 (1984-08-01), Aragaki et al.

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