The present disclosure relates to systems and methods of locking a faulted circuit indicator (FCI). For example, the FCI may include a locking assembly. The locking assembly may include a lock plate that selectively moves between a locked position and an unlocked position. When in the locked position, the lock plate blocks a lock link of the FCI from moving in a first direction to prevent the FCI from opening. When in an unlocked position, the lock plate enables the lock link of the FCI to move in the first direction to allow the FCI to open.

Systems and methods that provide a portable, verified voltage source that allows safe testing of separate contact and non-contact voltage measurement devices. A proving unit of the present disclosure selectively provides a known or specified direct current (DC) voltage, a contact alternating current (AC) voltage, and a non-contact AC voltage, which voltages may be fixed or may be user-selectable. The proving unit may include a visual indicator and/or an audible indicator that provides the user with an indication confirming that the proving unit is supplying the selected output voltage within the specifications of the proving unit, so the user will know that the proving unit is operating normally and is ready for testing the operation of a contact or non-contact voltage measurement device. If the proving unit cannot provide the specified voltage output, the indicator(s) provides a signal to the user that the proving unit is currently non-functional.

A device for accurate measurement based on wire diameter includes a clamp and two-space compensators. The clamp includes depressible grip handles to control opening and closing of two measurement sections. Two space compensators are respectively combinable with the two measurement sections. The space compensators each have a side that is recessed to form a first clamping section, such that the first clamping section is combinable with at least two fixing elements, which are each in an arc curved shape having one side recessed to form a second clamping section. The fixing elements are structured such that inside diameters defined by the second clamping sections thereof are reduced one by one in a direction away from the first clamping section. The fixing elements are selectable to have the inside diameter of the second clamping section matching a size of an electric wire to be measured.

A tool and method for handling a part within an electrical power transmission system is disclosed, the part having a flange with a hole through the flange. A first jaw and a second jaw are connected to pivot relative to one another and have respective ends that converge upon closure, for example to hold the flange between the respective ends. The first jaw may have a tooth extended at the respective end of the first jaw for fitting within the hole in the flange to hold the flange between the respective ends when the tool is in a closed position. The tool may be a hot stick adapter, or may include a hot stick made at least in part of dielectric material. An actuator may be connected to operate one or both of the first jaw and the second jaw from a user end of the hot stick.

A tool and method for handling a part within an electrical power transmission system is disclosed, the part having a flange with a hole through the flange. A first jaw and a second jaw are connected to pivot relative to one another and have respective ends that converge upon closure, for example to hold the flange between the respective ends. The first jaw may have a tooth extended at the respective end of the first jaw for fitting within the hole in the flange to hold the flange between the respective ends when the tool is in a closed position. The tool may be a hot stick adapter, or may include a hot stick made at least in part of dielectric material. An actuator may be connected to operate one or both of the first jaw and the second jaw from a user end of the hot stick.

The current disclosure relates to the design of an apparatus for enhancing the operation and reliability of high-power multi-chip modules, which are used in the design and implementation of power electronics converters. This apparatus is especially useful for modules containing recently commercialized, high-performance wide band-gap semiconductors such as Silicon Carbide (SiC), which commonly emit undesirable high-frequency ringing and oscillation in the Near-RF spectral band between 1-30 MHz. The disclosed apparatus provides near-complete elimination of this high frequency spectral content, while leaving the desired frequency range (1-100 kHz) of the module unaffected. In addition to the suppression of this undesirable high-frequency content, the disclosed apparatus also provides for accurate, galvanically-isolated, high-bandwidth, real-time current measurement, which is essential for some types of power electronics converters. The apparatus disclosed here provides ringing suppression and current measurement in simple circuit topology that can be implemented compactly inside the geometry of a multi-chip power module.

The current disclosure relates to the design of an apparatus for enhancing the operation and reliability of high-power multi-chip modules, which are used in the design and implementation of power electronics converters. This apparatus is especially useful for modules containing recently commercialized, high-performance wide band-gap semiconductors such as Silicon Carbide (SiC), which commonly emit undesirable high-frequency ringing and oscillation in the Near-RF spectral band between 1-30 MHz. The disclosed apparatus provides near-complete elimination of this high frequency spectral content, while leaving the desired frequency range (1-100 kHz) of the module unaffected. In addition to the suppression of this undesirable high-frequency content, the disclosed apparatus also provides for accurate, galvanically-isolated, high-bandwidth, real-time current measurement, which is essential for some types of power electronics converters. The apparatus disclosed here provides ringing suppression and current measurement in simple circuit topology that can be implemented compactly inside the geometry of a multi-chip power module.

A pair of clamping parts clamp a conductor to be measured and biased in closing directions. A pair of gripping parts are provided to be able to change a distance between the respective clamping parts according to a distance therebetween. Magnetoelectric conversion element(s) for current measurement is/are provided on either one or both of the respective clamping parts. A distance measurement unit is provided to be able to measure a physical quantity corresponding to the distance between the respective gripping parts as a physical quantity corresponding to the distance between the respective clamping parts. A current calculation device is provided to obtain a current flowing in the conductor to be measured on the basis of a magnetic field detected by the magnetoelectric conversion element(s) for current measurement and the physical quantity measured by the distance measurement unit when the conductor to be measured is clamped by the respective clamping parts.

A pair of clamping parts clamp a conductor to be measured and biased in closing directions. A pair of gripping parts are provided to be able to change a distance between the respective clamping parts according to a distance therebetween. Magnetoelectric conversion element(s) for current measurement is/are provided on either one or both of the respective clamping parts. A distance measurement unit is provided to be able to measure a physical quantity corresponding to the distance between the respective gripping parts as a physical quantity corresponding to the distance between the respective clamping parts. A current calculation device is provided to obtain a current flowing in the conductor to be measured on the basis of a magnetic field detected by the magnetoelectric conversion element(s) for current measurement and the physical quantity measured by the distance measurement unit when the conductor to be measured is clamped by the respective clamping parts.

Systems and methods for calibrating a voltage measurement device are provided herein. The voltage measurement device generates a reference current signal and senses the reference current signal in a conductor under test. A calibration system may control a calibration voltage source to selectively output calibration voltages in a calibration conductor. The calibration system may obtain data from the voltage measurement device captured by the voltage measurement device when measuring the calibration conductor. Such data may include one or more reference current measurements, one or more voltage measurements, etc. The calibration system utilizes the obtained measurements to generate calibration data which may be stored on the voltage measurement device for use thereby during subsequent operation. The calibration data may include one or more lookup tables, coefficients for one or more mathematical formulas, etc.