Voltage transformer disconnect grounding system

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electrical power distribution systems and devices

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Details

200 50A, 361620, 361623, 174 51, H02B 1100

Patent

active

054502802

ABSTRACT:
A device grounding system is shown which ensures that upon disconnect, an operator will be able to visually determine that a ground has been applied to the disconnected device. The grounding system is designed to mechanically drive a linkage which is controlled by the position of pullout chassis such that when the power bus is connected to the device, the ground is removed in a fail safe manner. As the chassis is opened, a gap distance is achieved between the device and the power source after which a ground rod is driven against input contacts on the disconnected device. The ground rod remains against the contacts through the full movement of the withdrawn chassis to ensure against inadvertent contacts with live devices.

REFERENCES:
patent: 2689293 (1954-09-01), Claybourn et al.
patent: 2795739 (1957-06-01), Wood
patent: 2879347 (1959-03-01), Diederich
patent: 4090230 (1978-05-01), Fuller et al.

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