A monitoring arrangement for electrical equipment includes a first sensor for sensing a surface creeping current on a creeping path-lengthening electrically insulating housing of the equipment. A monitoring system includes electrical equipment, the monitoring arrangement, a communication device for transmitting data to a central server device, and a central server device configured to receive and evaluate the data.

A chair for particular use in clinical or hospital environments has a frame to which a support material is secured. The support material may form a chair back and/or a seat for the chair to provide support to the chair occupant. The support material may be made from a textile of interwoven strands wherein some of the interwoven strands include copper containing particles, such as copper iodide or copper oxide within the textile fibers.

A combination includes: an electricity conducting element and a connector cable. The electricity conducting elements includes: a body of insulating material; an electrical conductor extending through the body; at least one passive electrical sensor embedded or integrated in the body of insulating material; and at least one shielded connector with one or more terminals arranged on an outer surface of the body, the at least one shielded connector being electrically connected to the at least one passive electrical sensor. The connector cable includes: a first shielded connector with one or more terminals for connecting with the at least one shielded connector; a second shielded connector with one or more terminals for connecting with an appliance or a further connector cable; and electrical components arranged closely to the first shielded connector and electrically connected to the terminals of the first shielded connector.

Electrical bushing for medium and high voltage, the bushing including a fluid filled insulation volume; a sensor unit in contact with the fluid in the fluid filled insulation volume; wherein the sensor unit is configured to measure a breakdown voltage of the fluid.

The invention relates to an arrangement and a method for switching clearances between contacts by means of switching devices, wherein an energy provides an actuator energy for at least one switching device, in particular a vacuum interrupter.

An apparatus for mounting at a conductive terminal of a high voltage insulator is provided. An apparatus includes an electrical insulator including an electrically insulating material without a conductive material. The electrical insulator includes a first surface, a second surface, a first edge that is between the first surface and the second surface, an intersection between the first edge and the first and second surfaces, and a second edge that is opposite the first edge and that is between the first surface and the second surface. The apparatus further includes a connected electrical conductor that is arranged on the first surface of the electrical insulator and is spaced apart from the second edge and an electrically conductive connector that is configured to electrically couple the connected electrical conductor to the conductive terminal of the high voltage insulator.

A high voltage system including: a high voltage bushing having a bushing body configured to be assembled with a tank filled with a dielectric liquid wherein the bushing body has a cavity, and the bushing includes a dielectric liquid level sensor configured to measure a dielectric liquid level in the cavity, and a temperature distribution determining device configured to determine a heat distribution in the bushing based on the dielectric liquid level measured by the dielectric liquid level sensor.

A high voltage system including: a high voltage bushing having a bushing body configured to be assembled with a tank filled with a dielectric liquid wherein the bushing body has a cavity, and the bushing includes a dielectric liquid level sensor configured to measure a dielectric liquid level in the cavity, and a temperature distribution determining device configured to determine a heat distribution in the bushing based on the dielectric liquid level measured by the dielectric liquid level sensor.

An overhead power line insulator is provided including a device for detecting and measuring a leakage current and for transmitting data, the device being arranged in such a manner as to perform: measuring a leakage current of an insulator during a first measurement period and during a second measurement period in a measurement circuit; comparing two values of the current that are obtained during respective ones of the two measurement periods; and stopping the measurement circuit for a certain sleep period of time if the second value of the current is less than or equal to the first value of the current, and then starting the measurement circuit again after the certain sleep period of time.

A support for mounting an accessory equipment assembly with one or more accessory equipment units, such as current transformer units, to a base of a bushing includes a conductor surrounded by an insulator part such that each of the accessory equipment units is positioned in a defined way regarding the conductor, wherein said support includes aligning means for aligning each individual accessory equipment unit separately with respect to the conductor. A corresponding accessory equipment module includes an accessory equipment assembly with one or more accessory equipment units such as current transformer units, and a support for mounting the accessory equipment assembly as well as a bushing unit including a bushing and said kind of accessory equipment module.