The present disclosure discloses an isolation device for a voltage transformer cabinet including a drive shaft; a conductive ring sleeved and fixed to the drive shaft; a movable guide rod fixed to the drive shaft and the conductive ring to swing along with a rotation of the drive shaft and electrically connected with the conductive ring; a fixing post fixedly connected to the voltage transformer; a contact, installed to the fixing post through a compression spring and electrically connected with the fixing post, and keeping in electrical contact with the conductive ring under an action of the compression spring; a closing stationary contact; and a grounded stationary contact, the rotation of the drive shaft drives the movable guide rod to swing between on position in which the movable guide rod contacts the closing stationary contact and grounded position in which the movable guide rod contacts the grounded stationary contact.

The present disclosure discloses an isolation device for a voltage transformer cabinet including a drive shaft; a conductive ring sleeved and fixed to the drive shaft; a movable guide rod fixed to the drive shaft and the conductive ring to swing along with a rotation of the drive shaft and electrically connected with the conductive ring; a fixing post fixedly connected to the voltage transformer; a contact, installed to the fixing post through a compression spring and electrically connected with the fixing post, and keeping in electrical contact with the conductive ring under an action of the compression spring; a closing stationary contact; and a grounded stationary contact, the rotation of the drive shaft drives the movable guide rod to swing between on position in which the movable guide rod contacts the closing stationary contact and grounded position in which the movable guide rod contacts the grounded stationary contact.

A connector assembly is provided for facilitating live connection of equipment in a switchgear. The assembly includes two circular plates, and conductive fingers which are arranged and spaced apart around the two plates to form a finger cluster with first open-end on a first cluster end and second open-end on an opposite second cluster end. Each open-end can receive a conductor therein. Each finger can include a first finger end and an opposite second finger end which form respective first and second cluster ends; two first interior grooves which are spaced-apart on an interior surface to receive a portion of respective plates; and first and second exterior grooves on an exterior surface around the first and second finger ends respectively. The assembly also includes first and second garter springs which are arranged around the fingers in respective first and second exterior grooves to apply a force against the fingers.

Ground and test devices (G&TD) have an interchangeable test configuration using serially releasably mountable first and second ground assemblies and releasably mounted primary arm conductors thereby allowing for onsite field modification of a base test unit for use to test either the load side or line side terminals without requiring two separate base test devices providing an economic and less bulky test solution for end users.

A bushing structure for a switchgear includes a mounting portion constructed and arranged to mount the bushing structure. A barrel portion extends from the mounting portion and is coaxial there-with. The barrel portion includes a plurality of undulations in a peripheral surface thereof to increase creepage distance. A primary contact is disposed within and extends a length of the barrel portion. The primary contact has a first end constructed and arranged to be contacted by a movable contact of the switchgear and a second end constructed and arranged to be connected with a busbar.

A bushing structure for a switchgear includes a mounting portion constructed and arranged to mount the bushing structure. A barrel portion extends from the mounting portion and is coaxial there-with. The barrel portion includes a plurality of undulations in a peripheral surface thereof to increase creepage distance. A primary contact is disposed within and extends a length of the barrel portion. The primary contact has a first end constructed and arranged to be contacted by a movable contact of the switchgear and a second end constructed and arranged to be connected with a busbar.

A metal-clad compliant grounding/earthing switch device configured for use within conventional switchgear is described. The device is equipped with adequate and compliant insulation of all bus connections, and is configured to close during maintenance outages grounding the live parts of the circuit feed by a particular breaker. The device enables electricians to perform maintenance and repairs in the event of an outage safely, and without the need to manually install a temporary Ground-and-Test Device. An insulated clam shell is present to limit fault propagation from live components until components are confirmed as grounded prior to maintenance of the switchgear.

A metal-clad compliant grounding/earthing switch device configured for use within conventional switchgear is described. The device is equipped with adequate and compliant insulation of all bus connections, and is configured to close during maintenance outages grounding the live parts of the circuit feed by a particular breaker. The device enables electricians to perform maintenance and repairs in the event of an outage safely, and without the need to manually install a temporary Ground-and-Test Device. An insulated clam shell is present to limit fault propagation from live components until components are confirmed as grounded prior to maintenance of the switchgear.

The present invention relates to a withdrawable arc eliminator having an interlock function, and more particularly, to a withdrawable arc eliminator having an interlock function capable of preventing insertion or withdrawal of an arc eliminator applied to an electrical panel, in a closed state of the arc eliminator.

The present invention relates to a withdrawable arc eliminator having an interlock function, and more particularly, to a withdrawable arc eliminator having an interlock function capable of preventing insertion or withdrawal of an arc eliminator applied to an electrical panel, in a closed state of the arc eliminator.