US 12,136,531 B2 · Hazardous location compliant circuit protection devices, systems and methods with safety lockout/tagout components

Abstract

In one embodiment, a method includes, by a switch device, determining a position of an on/off input selector, the on/off input selector being located within a switch device, in response to determining the position of the on/off input selector is in an off position, operating one or more solid state switches to suspend current to one or more load-side terminals, determining whether the one or more load-side terminals of the switch device are electrically isolated, in response to determining the one or more load-side terminals of the switch device are electrically isolated, generating a prompt via a graphical user interface, and receiving, via the graphical user interface, one or more inputs, the one or more inputs including at least a request for safety lockout instructions.

Claims20

Dependent claims

A method implemented by a switch device for an explosive environment, wherein the switch device does not have a separately provided explosion-proof enclosure, the method comprising;

determining a position of an on/off input selector, the on/off input selector being located within a switch device;
in response to determining the position of the on/off input selector is in an off position, operating one or more solid state switches to suspend current to one or more load-side terminals;
determining whether the one or more load-side terminals of the switch device are electrically isolated;
in response to determining the one or more load-side terminals of the switch device are electrically isolated, generating a prompt via a graphical user interface;
receiving, via the graphical user interface, one or more inputs, the one or more inputs including at least a request for safety lockout instructions;
detecting a lock installation;
and
disabling the on/off input selector and preventing a further change in state of the on/off input selector.

5 more elements

A switch device for an explosive environment, wherein the switch device does not have a separately provided explosion-proof enclosure, the switch device comprising:

one or more displays;
one or more non-transitory computer-readable storage media including instructions;
and one or more processors coupled to the storage media, the one or more processors configured to execute the instructions to:
determine a position of an on/off input selector, the on/off input selector being located within a switch device;
in response to determining the position of the on/off input selector is in an off position, operate one or more solid state switches to suspend current to one or more load- side terminals;
determine whether the one or more load-side terminals of the switch device are electrically isolated;
in response to determining the one or more load-side terminals of the switch device are electrically isolated, generate a prompt via a graphical user interface;
receive, via the graphical user interface, one or more inputs, the one or more inputs including at least a request for safety lockout instructions;
detect a lock installation;
and
disable the on/off input selector to prevent a further change in state of the on/off input selector.

8 more elements

A computer-readable non-transitory storage media comprising instructions executable by a processor to:

determine a position of an on/off input selector, the on/off input selector being located within a switch device for an explosive environment, wherein the switch device does not have a separately provided explosion-proof enclosure;
in response to determining the position of the on/off input selector is in an off position, operate one or more solid state switches to suspend current to one or more load- side terminals;
determine whether the one or more load-side terminals of the switch device are electrically isolated;
in response to determining the one or more load-side terminals of the switch device are electrically isolated, generate a prompt via a graphical user interface;
and
receive, via the graphical user interface, one or more inputs, the one or more inputs including at least a request for safety lockout instructions;
detect a lock installation;
and
disable the on/off input selector to prevent a further change in state of the on/off input selector.

6 more elements

Dependencies are inferred from the claim text.

Hazardous location compliant circuit protection devices, systems and methods with safety lockout/tagout components

Life of this patent

Hazardous location compliant circuit protection devices, systems and methods with safety lockout/tagout components

Life of this patent

Abstract

Claims20