Protective device for electrostatic sprayer equipment

Details Protective device for electrostatic sprayer equipment Protective device for electrostatic sprayer equipment

1984-09-14

1987-06-09

Envall, Jr., Roy N.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 42, 361 87, 361235, H02H 300

Patent

active

046725008

ABSTRACT:
Electrostatic spraying equipment having, in a working area likely to contain inflammable mixtures, at least a terminal part of a high-voltage generator with an electrode for charging a jet of material sprayed from a sprayer. At least one low-voltage line connects the terminal part of the generator to a remotely sited power supply equipped with cut-out device. A protective device designed to prevent repeated arcing in the working area as a result of deterioration of the low-voltage line comprises, in series with the line, a sensing device for sensing a current lower than a predetermined minimum current. A control device responsive to the sensing device are connected to the aforementioned cut-out device so as to operate them when a current in the line lower than the predetermined minimum is sensed.

REFERENCES:
patent: 3894272 (1975-07-01), Bentley
patent: 3996496 (1976-12-01), Volk, Jr.
patent: 4187527 (1980-02-01), Bentley
patent: 4402030 (1983-08-01), Moser et al.
patent: 4485427 (1984-11-01), Woodruff et al.

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