Abstract: The present disclosure is directed to a computer server rack assembly for supporting an electronic unit, per an embodiment. The computer server rack assembly includes a housing, an electric busbar, a first cooling manifold, a second cooling manifold, and at least one rail panel. The housing includes a front space region, a rear space region, a front side, and a back side. The electric busbar is vertically secured to the backside of the server rack and has a power basis of 48 VDC. The first cooling manifold and the second cooling manifolds are vertically secured to the backside of the server rack and are configured to distribute liquid coolant to at least one electronic unit within the housing. The rail panels are configured to be placed within the housing and support an electronic unit within the housing.

Abstract: An electronic equipment cabinet can include one or more mounting rails for supporting electronic equipment, such as computing equipment, within the cabinet, at least one fire sensor, and at least one fire extinguisher. The fire sensor(s) can be configured to detect fire within the cabinet and/or outside the cabinet. For example, the fire sensor(s) can include an internal fire sensor configured to detect fire within the cabinet and/or an external fire sensor configured to detect fire outside the cabinet. The fire extinguisher can be configured to extinguish fire within the cabinet and/or outside the cabinet. For example, the fire extinguisher(s) can include an internal fire extinguisher configured to extinguish fire within the cabinet and/or an external fire extinguisher configured to extinguish fire outside the cabinet.

Abstract: A cabinet can include a body for housing electronic equipment, a plurality of legs extending downwardly from the body, with each leg secured to a different bottom corner of the body, a plurality of balls, each ball secured to one of the legs, and a plurality of support cups configured to be secured to a support surface.

Abstract: A printed circuit board (PCB) is provided and includes a plurality of edge connectors, a pin connector, and a plurality of electrical lines each electrically connecting one of the plurality of edge connectors to the pin connector. The plurality of edge connectors are positioned on the PCB to enable the plurality of edge connectors to interface with respective connectors of a plurality of configurations of circuit breakers. The configurations may include a configuration including a first type of circuit breaker and a configuration including a second type of circuit breaker. The first and second types of circuit breakers may be 1-63 ampere (A) and 80-125A circuit breakers or 80-125A and 200A circuit breakers, or may be any of a variety of other types.

Abstract: An adaptive direct current (DC) conversion system may include a multi-mode DC converter circuit including two or more power switches, where the multi-mode DC converter circuit is operable in two or more pulse width modulation (PWM) modes based on two or more PWM signal sets provided to the two or more power switches. The system may further include a PWM controller, where the PWM controller controls which of the two or more PWM modes the multi-mode DC converter circuit operates in by providing the multi-mode DC converter circuit with the associated one of the two or more PWM signal sets.

Abstract: The present disclosure is a system and method for measuring AC residual current and DC residual current using a singular type-B residual current monitoring device. The system includes a sensor comprising two or more cores that measure residual AC current and residual DC current from two or more current carrying conductors through the cores that carry AC current and DC current. The system includes a controller that sends both an AC excitation current to the cores, as well as a DC nulling current that cancels out the DC residual current, allowing the system to then accurately measure the AC residual current. The system also includes a self-test feature that injects known quantities of both AC current and DC current through the sensor to determine if the sensor is functioning properly.

Abstract: The present disclosure is directed to a power distribution unit (PDU). The PDU includes an enclosure, which consists of a front panel, at least one side panel, and a rear panel. The PDU further includes at least one power output receptacle mounted on the enclosure, and at least one or more circuit breakers coupled to a breaker mount. The circuit breaker can have a DIN-Rail mount design and is in series with the corresponding power outlet receptacle. The breaker mount consists of a base surface, a mounting surface, and a top surface for attaching the breaker mount to the PDU. The mounting surface of the breaker mount includes a first mounting post and a second mounting post, to allow for a DIN-Rail mountable circuit breaker to be installed in the PDU.

Abstract: An uninterruptible power supply device can provide electrical power to one or more computing devices and can include one or more hot swappable modules coupled thereto and/or a display module rotatably coupled thereto. The display module can selectively rotate to block and/or allow removal of the hot swappable modules.

Abstract: In some embodiments, apparatuses and methods are provided herein useful to operating uninterruptible power supplies (UPS). The embodiments may include a plurality of capacitor banks, a UPS control circuit, and a central control circuit. The UPS control circuit is configured to cause an output of a clean electrical power, sample the clean electrical power, calculate control algorithm outputs based on the sampled clean electrical power, and output control algorithm results to the central control circuit. The central control circuit configured to detect a degradation of the plurality of capacitor banks, and transmit a service alert in response to the detection of the degradation of the plurality of capacitor banks.

Abstract: An installation support compatible with multiple installation modes, comprising a pole holding member (1), a pole-holding and wall-hanging integrated member (2), and a hanging member (3) that is detachably fixed to outdoor equipment. The hanging member (3) is detachably hung on the pole-holding and wall-hanging integrated member (2). The pole-holding and wall-hanging integrated member (2) can be independently and detachably installed on a wall body, or is enclosed with the pole holding member (1) to tightly hold a holding pole and is detachably fixed to the pole holding member (1), such that wall-hanging installation and pole-holding installation can be realized, the cost is lowered, and moreover, the field layout is simplified.

Abstract: A device may include an rectifier with one or more transistors that accepts a three-phas7 input and generates a DC bus output, a low-pass filter to provide a filtered DC bus voltage, a driver to drive the transistors based on a modulation index, and a controller to generate the modulation index. The controller may generate a nominal modulation index, generate an adjusted modulation index based on the nominal modulation index modified by a ratio of the filtered and measured DC bus voltages, and provide the modulation index to the PWM driver, where the modulation index is the nominal modulation index when a difference voltage associated with a difference between the filtered and measured DC bus voltages is below a voltage threshold, and where the modulation index is the adjusted modulation index when the difference voltage is above the voltage threshold.

Abstract: The present disclosure relates to a power supply management system adapted for use with at least one utility proxy power source, to control powering first and second loads when an AC mains power source is not available to provide power to the loads. The system uses an internal DC bus of a power converter to receive power from a utility proxy, and a DC/DC converter/charger of the power converter to receive power from a short term supplemental battery subsystem. The DC/DC converter/charger is used to supply a first AC output signal to power the first load. An AC/DC rectifier of the power converter uses the DC power from the utility proxy, supplied onto the internal bus, to generate a second AC output signal which is applied independently to the second load to power the second load fully independently of the first load.

Abstract: A method of predicting a remaining life of a filter can include transmitting light toward the filter, taking a measurement of light reflected from the filter, adding the measurement to a database, predicting the remaining life of the filter using the database, displaying the remaining life of the filter, or any combination thereof. The light can include infrared light.

Abstract: An uninterruptible power supply, a control method and a power supply system for normally starting the uninterruptible power supply and securing switch devices are provided. The uninterruptible power supply includes a first rectification circuit, a charge-discharge circuit, a bus capacitor, a first switch circuit and a second rectification circuit. The first rectification circuit is connected to the charge-discharge circuit, and is configured to rectify a voltage outputted by the alternating current power supply. The charge-discharge circuit is connected to the bus capacitor, and is configured to charge the bus capacitor after boosting the voltage outputted by the first rectification circuit, until the voltage across the bus capacitor reaches a first voltage. The first switch circuit is connected to the second rectification circuit, and is configured to connect the alternating current power supply to the second rectification circuit.

Abstract: An excitation fuse device and a UPS battery circuit are provided including an excitation fuse and a voltage driving control module including a voltage detection circuit to detect a fuse device voltage and generate a voltage detection signal based on the fuse device voltage and a reference voltage, a fusing controller to receive voltage detection signal and generate a voltage control signal based on voltage detection signal and a fuse detection signal, and a fuse circuit to generate a fusing control signal based on the voltage control signal, which includes a current fuse to be fused based on a short-circuit current and a detonating breaker to be switched off based on the fusing control signal. The current fuse is connected to the fuse circuit through the detonating breaker, the fusing controller is connected to the voltage detection circuit, the fuse circuit and the excitation fuse.

Abstract: A method can include pumping the refrigerant through an evaporator in thermal communication with a heat load, thereby heating the refrigerant and causing at least some of the refrigerant to change from a liquid phase to a vapor phase, cooling the refrigerant in a condenser fluidically downstream from the evaporator, thereby causing at least some of the refrigerant to change from the vapor phase to the liquid phase, extracting a portion of the refrigerant in the vapor phase fluidically between the evaporator and the condenser, and injecting the extracted portion of the refrigerant, in the vapor phase, fluidically between the pump and the evaporator, thereby increasing the temperature of the refrigerant entering the evaporator to minimize single-phase cooling in the evaporator.

Abstract: 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.

Abstract: A system for cooling a computer cabinet can include a computer cabinet having an interior space, two or more vertical rails within the interior space of the cabinet, one or more rack-mounted computer modules coupled to the vertical rails, and a baffle configured to separate the interior space of the cabinet into a first portion and a second portion. The module(s) can extend into both the first and second portions of the interior space of the cabinet. The baffle can direct air flowing into the first portion of the interior space of the cabinet through the module(s) and to the second portion of the interior space of the cabinet.

Abstract: A junction box for facilitating testing of a rack power distribution unit with a load bank can include a terminal block electrically coupled to the load bank by high amperage cables as well as multiple line receptacles and multiple neutral receptacles. The receptacles can be electrically coupled to the terminal block by lower amperage wires. The receptacles can be electrically coupled to the terminal block through switches and/or fuses. The junction box can include visual indicators to warn of voltage differential between respective pairs of receptacles.

Abstract: An intelligent graphic human/machine interface unit (GHMI) for a power controller device detects, via visual sensors, a user proximate to the device and transitions from “sleep” to “command” mode. When in “command” mode, a user may authenticate themselves to the device, and provide (e.g., in “active” mode) control input for executing device functions, either via a touchscreen display of the GHMI unit or via unlock and command gestures manually performed by the user, detected by the visual sensors, and decoded by the GHMI controller. Command gestures may be mapped to specific control functions and/or command sequences commonly executed by the power controller device. By allowing a user to provide authentication and control input via signed gestures, a user wearing protective gloves or other protective gear precluding use of a capacitive touchscreen may interact with, monitor, or manage the power controller device normally.