A telescopic electric conductor includes an electrically conductive first tube having a longitudinal axis and an electrically conductive second tube movable relative to the first tube along the longitudinal axis while being at least partly received within the first tube. An electrically conductive flexible self-supporting element is arranged inside the first tube and is mechanically and electrically connected to the first tube and to the second tube. The flexible element is arranged to elastically deform along the longitudinal axis. The flexible element has a waveform shape with several cycles of the waveform includes a number of sections that are welded together, each section having a shape of a half cycle of the waveform.

An outdoor seismic cabinet assembly includes a base located at an outdoor deployment location and a cabinet for housing electronic equipment coupled to the base. The assembly also includes a first post disposed adjacent to a first sidewall of the cabinet and coupled to the base, a second post disposed adjacent to a second sidewall of the cabinet and coupled to the base, and a cross-member disposed adjacent to a top portion of the cabinet. At least one first bracket is coupled to the first post and to the cross-member and at least one second bracket is coupled to the second post and to the cross-member. Other example outdoor seismic cabinet assemblies and seismic cabinet conversion kits are also disclosed.

A telescopic electric conductor includes an electrically conductive first tube having a longitudinal axis and an electrically conductive second tube movable relative to the first tube along the longitudinal axis while being at least partly received within the first tube. An electrically conductive flexible self-supporting element is arranged inside the first tube and is mechanically and electrically connected to the first tube and to the second tube. The flexible element is arranged to elastically deform along the longitudinal axis. The flexible element has a waveform shape with several cycles of the waveform includes a number of sections that are welded together, each section having a shape of a half cycle of the waveform.

A device (1) for supporting an equipment (2), especially an upstanding electrical equipment from vibrations is disclosed. The device comprises a base plate (3), a set of support adapters (7), a set of viscous dampers (5) connecting the base plate to the support adapters and a set of wire rope dampers (6), wherein the set of wire rope dampers bear the base plate and connect the base plate to the support adapters. Further, the set of support adapters connect the viscous dampers and the wire rope dampers to a foundation plate by bolts or alternatively to a shake table via shake table adapters. A set of angular fixtures connect the support adapters to the base plate by means of the viscous dampers. In a preferred embodiment of the device the base plate is orthogonally shaped.

A device (1) for supporting an equipment (2), especially an upstanding electrical equipment from vibrations is disclosed. The device comprises a base plate (3), a set of support adapters (7), a set of viscous dampers (5) connecting the base plate to the support adapters and a set of wire rope dampers (6), wherein the set of wire rope dampers bear the base plate and connect the base plate to the support adapters. Further, the set of support adapters connect the viscous dampers and the wire rope dampers to a foundation plate by bolts or alternatively to a shake table via shake table adapters. A set of angular fixtures connect the support adapters to the base plate by means of the viscous dampers. In a preferred embodiment of the device the base plate is orthogonally shaped.

Provided is a system of designing a seismic isolation mount for protecting electrical equipment comprising switchboard and control panel from earthquakes. The system of designing a seismic isolation mount includes: a user terminal for inputting design constants for physical properties and dimensions of protection target equipment; a database for storing design constants received from the user terminal; and a seismic isolation mount design server for determining a design variable satisfying a predetermined design condition on the basis of the design constants, in which the maximum bending stress is obtained as

[00001]${\sigma }_{b,\max }={\sigma }_b\left(\omega \right){|}_{\max }\equiv \frac{{\mathrm{dM}}_{b,\max }}{I}=\frac{d\left(F_{\max }L\right)}{I}=\frac{d\left(\mathrm{kL}|z\left(t\right){|}_{\max }\right)}{I}=\frac{{\mathrm{dmkLA}}_g\left(\omega \right)}{2\zeta I}\left(\frac{1}{k_{\mathrm{eq}}}-\frac{1}{k_s}\right),$

and a spring constant and a damping constant of the seismic isolation mount are obtained as

[00002]$\begin{array}{cc}{k}_s=\frac{{k\mathrm{•k}}_{\mathrm{eq}}}{k-k_{\mathrm{eq}}}& \left(N/m\right)\end{array}$

Provided is a system of designing a seismic isolation mount for protecting electrical equipment comprising switchboard and control panel from earthquakes. The system of designing a seismic isolation mount includes: a user terminal for inputting design constants for physical properties and dimensions of protection target equipment; a database for storing design constants received from the user terminal; and a seismic isolation mount design server for determining a design variable satisfying a predetermined design condition on the basis of the design constants, in which the maximum bending stress is obtained as

[00001]${\sigma }_{b,\max }={\sigma }_b\left(\omega \right){|}_{\max }\equiv \frac{{\mathrm{dM}}_{b,\max }}{I}=\frac{d\left(F_{\max }L\right)}{I}=\frac{d\left(\mathrm{kL}|z\left(t\right){|}_{\max }\right)}{I}=\frac{{\mathrm{dmkLA}}_g\left(\omega \right)}{2\zeta I}\left(\frac{1}{k_{\mathrm{eq}}}-\frac{1}{k_s}\right),$

and a spring constant and a damping constant of the seismic isolation mount are obtained as

[00002]$\begin{array}{cc}{k}_s=\frac{{k\mathrm{•k}}_{\mathrm{eq}}}{k-k_{\mathrm{eq}}}& \left(N/m\right)\end{array}$

An apparatus and use of the apparatus for monitoring a current-carrying device wherein at least one acceleration sensor produces acceleration measurement values and a communication device transmits produced acceleration measurement values. A power supply unit is for the acceleration sensor and the communication device. The power supply unit includes an induction plate of a metallic material and a conductor loop extending around the induction plate and produces a power supply for the acceleration sensor and the communication device exclusively through induction from an electromagnetic alternating field of the current-carrying device. The apparatus can be positioned in a closed housing having a housing wall and the induction plate can be at least a subregion of the housing wall.

A switching device has an encapsulation housing and lashing points. The lashing points are arranged in such a manner that a center of gravity of the switching device lies below the lashing points in a lashing direction.

A switching device has an encapsulation housing and lashing points. The lashing points are arranged in such a manner that a center of gravity of the switching device lies below the lashing points in a lashing direction.