Abstract: The intensive use shelf is constructed to attach to a wall and prevent ligature attachments. The intensive use shelf is formed of a one piece hollow body having sloped horizontal surfaces and without ligature tie off points such as holes in the one piece body. The body comprises a pair of sloped side walls, a sloped top and a pocket for retaining a hangar hook. Each of the pair of sloped sidewalls have a higher point on the wall and the lower point spaced from the wall. The sloped top is on the sloped sidewalls to provide a sloped top and hold the sidewalls spaced apart. The hangar support comprises an indentation in the body to hold a hangar hook.

Abstract: The invention is directed to an intensive use furniture component having a sealing connection on a mounting surface for sealingly attaching to a floor or wall to prevent liquid from seeping under or behind the furniture component. The furniture component is formed by an outer shell having a side wall extending generally perpendicular to the mounting surface. A mounting flange is disposed adjacent the sidewall. A bolt hole is formed in the mounting flange. The sealing connection comprises a caulk channel formed as a channel in the mounting surface for receiving a bead of caulk to fill the seam between the mounting surface and the wall or floor to prevent fluid from seeping past the caulk channel to a space adjacent the interior mounting surface.

Abstract: A method of performing temperature-based diagnostics for motor starters within a physical grouping of motor starters is performed by determining a presently expected temperature operating range for each starter based on measuring operating temperatures of the starters; measuring their current draws, and evaluating the temperature and load draw data in light of compensation values assigned for the known power ratings of the starter and the starter's physical location within the grouping. With the presently expected temperature operating range of the starter determined, and the periodic monitoring of starter temperatures, when an individual starter's temperature exceeds its expected range, a diagnostic warning will be issued for that starter and/or for the control panel itself as a guide for preventative maintenance. Alternately, the warning may be issued for an unexpected temperature rise for a given rise in current draw, or for values exceeding an expected rate of temperature change.

Abstract: The invention is directed to an intensive use shelf comprising a ligature resistant design including a ligature resistant sloped top, a ligature resistant hangar recess and a contraband barrier on the mounting wall. The shelf having a body, two side panels, a top and a shelf. Each of the two side panels having a sloped top. The top comprising the side panels having a downward sloped configuration to resistant climbing and ligature attachment. A ligature resistant hangar support engagement on the shelf. The ligature resistant hangar support having a J-bar shaped recess.

Abstract: The invention is directed to an intensive use furniture component having a sealing connection on a mounting surface for sealingly attaching to a floor or wall to prevent liquid from seeping under or behind the furniture component. The furniture component is formed by an outer shell having a side wall extending generally perpendicular to the mounting surface. A mounting flange is disposed adjacent the sidewall. A bolt hole is formed in the mounting flange. The sealing connection comprises a caulk channel formed as a channel in the mounting surface for receiving a bead of caulk to fill the seam between the mounting surface and the wall or floor to prevent fluid from seeping past the caulk channel to a space adjacent the interior mounting surface.

Abstract: The present invention provides an improved hybrid motor starter that extends the expected life of the main motor contacts of a standard contactor by reducing arcing during opening and closing of the main motor contacts and permits the use of physically smaller solid state switching devices and secondary contacts that have electrical ratings significantly lower than the standard contactor. The use of smaller solid state switching device and secondary contacts that have lower electrical ratings is permitted by minimizing the time at which these devices are exposed to full motor currents.

Abstract: A method of performing temperature-based diagnostics for motor starters within a physical grouping of motor starters is performed by determining a presently expected temperature operating range for each starter based on measuring operating temperatures of the starters; measuring their current draws, and evaluating the temperature and load draw data in light of compensation values assigned for the known power ratings of the starter and the starter's physical location within the grouping. With the presently expected temperature operating range of the starter determined, and the periodic monitoring of starter temperatures, when an individual starter's temperature exceeds its expected range, a diagnostic warning will be issued for that starter and/or for the control panel itself as a guide for preventative maintenance. Alternately, the warning may be issued for an unexpected temperature rise for a given rise in current draw, or for values exceeding an expected rate of temperature change.

Abstract: The invention is directed to an intensive use furniture component having a sealing connection on a mounting surface for sealingly attaching to a floor or wall to prevent liquid from seeping under or behind the furniture component. The furniture component is formed by an outer shell having a side wall extending generally perpendicular to the mounting surface. A mounting flange is disposed adjacent the sidewall. A bolt hole is formed in the mounting flange. The sealing connection comprises a caulk channel formed as a channel in the mounting surface for receiving a bead of caulk to fill the seam between the mounting surface and the wall or floor to prevent fluid from seeping past the caulk channel to a space adjacent the interior mounting surface.

Abstract: An EVSE is equipped with voltage and current monitors to monitor V and I values over the time of charging. Normal V & I charging values for EV charging have been previously established and plotted as a threshold curve. During present charging, the V and Z values are plotted and compared to the threshold values and the slope of the V/I curve. If present value of V is less than the threshold value, or drops over time, or the Z value increases over time; current (I) to the EV is reduced and a new V/I curve is plotted. Slope of the new V/I curve is compared to the threshold and also checked for change of slope over time. If the new V/I curve slope is greater than the threshold slope, or is changing over time, corrective action is taken.

Abstract: The present invention relates to systems for generating an arc fault in an electrical circuit, as well as methods thereof. In particular, the system provides a platform that can produce an arc discharge in a controlled manner, while measuring various parameters to characterize that discharge. Such parameters include voltage measurements, current measurements, optical spectroscopy measurements, electron temperatures, and/or plasma temperatures.

Abstract: A system to detect application conditions exceeding SELV design limitations and to subsequently warn or take action. A pulse detector is coupled to the switching pole of an output FET of a SELV power supply through an optocoupler and tracks when the FET is commutated off to block conduction. If a pulse occurs more than once in a given period the power supply is declared to be outside of SELV design parameters and warnings are issued or actions are taken.

Abstract: An adapter which can be retrofit onto the downstream end of a standard Electric Vehicle Supply Equipment connector is used to control power consumption of an Electric Vehicle charging facility by intercepting the Control Pilot Signal going to the Electric Vehicle and issuing a new Control Pilot Signal to the Electric Vehicle which is particularly tailored for the present use, requirements and limitations of the delivery system capability. The adapter has wireless communication capability, requires no wiring to and from the Electric Vehicle Supply Equipment, is independent of any proprietary designs of the Electric Vehicle Supply Equipment and adds no constraints or requirements to the Electric Vehicle Supply Equipment.

Abstract: A simple, economically efficient, synchronized switching system for control of a three phase motor contactor utilizes only Voltage monitoring to determine zero crossings and knowledge of the sinusoidal power waveforms and operational delay period of the contactor, to synchronize operation of the contacts at low power. The phases can be serially utilized for zero crossing detection upon Close or Open commands, so as to spread the wear over each set of contacts. Expensive metal at the contact surfaces can therefore be used more efficiently. For arc energy reduction upon contact opening, knowledge of Line-Load Voltage on at least one phase can be used to derive an empirical determination of the voltage angle at opening which yields the lowest arc energy.

Abstract: In an electromagnetically controlled actuator of an electrical contactor, switching is done by the actuator with a set of fixed contacts and a set of movable contacts. The movable contacts are carried on a movable contact carrier. The movable contact carrier is coupled to and driven by an armature surrounded by a coil. The armature carries a coupling shaft, and the coupling shaft carries at least part of a bistable coupling mechanism which joins the armature to the movable contact carrier and allows the movable contact carrier and armature to keep the fixed and movable contacts separated when a short circuit current creates a contact welding situation.

Abstract: A system and method for evaluating and altering, if necessary, the potential for a cyber security attack on an individual embedded device located on a local network assumed to be protected from outside cyber threats. In a first level of potential exposure the system attempts to send an outgoing message to a known IP address on a network outside the local network. If the outgoing messages are confirmed as received the embedded device has access to outside networks. In a second level of potential exposure the known outside IP address attempts to send an incoming message to the embedded device. If the incoming message is received the embedded can be accessed from an external network.

Abstract: The present invention provides a method of using a current transformer for a temperature sensing device. The method determines the temperature of the current transformer's secondary winding by injecting a DC current into the secondary winding, measuring a voltage across the secondary winding, calculating the resistance of the secondary winding from the voltage induced into the secondary winding by the injected DC current and determining the secondary winding temperature by calculations or a comparison with verified resistance/temperature combinations.

Abstract: A multiple output port adapter retrofit is used to extend the number of output ports for a single port Electric Vehicle Supply Equipment (EVSE) in a cost efficient manner without affecting the single EVSE supply power infrastructure. Each branch of the adapter has a self-contained controller and communicates with other branches via a central communication bus. The branch central controllers evenly divide the available power capacity and allow simultaneous charging of multiple EVs with the divided power and without adding requirements to the Electric Vehicle Supply Equipment.

Abstract: A system to detect application conditions exceeding SELV design limitations and to subsequently warn or take action. A pulse detector is coupled to the switching pole of an output FET of a SELV power supply through an optocoupler and tracks when the FET is commutated off to block conduction. If a pulse occurs more than once in a given period the power supply is declared to be outside of SELV design parameters and warnings are issued or actions are taken.

Abstract: A simple, economically efficient, synchronized switching system for control of a three phase motor contactor utilizes only Voltage monitoring to determine zero crossings and knowledge of the sinusoidal power waveforms and operational delay period of the contactor, to synchronize operation of the contacts at low power. The phases can be serially utilized for zero crossing detection upon Close or Open commands, so as to spread the wear over each set of contacts. Expensive metal at the contact surfaces can therefore be used more efficiently. For arc energy reduction upon contact opening, knowledge of Line-Load Voltage on at least one phase can be used to derive an empirical determination of the voltage angle at opening which yields the lowest arc energy.

Abstract: An EVSE is equipped with voltage and current monitors to monitor V and I values over the time of charging. Normal V & I charging values for EV charging have been previously established and plotted as a threshold curve. During present charging, the V and Z values are plotted and compared to the threshold values and the slope of the V/I curve. If present value of V is less than the threshold value, or drops over time, or the Z value increases over time; current (I) to the EV is reduced and a new V/I curve is plotted. Slope of the new V/I curve is compared to the threshold and also checked for change of slope over time. If the new V/I curve slope is greater than the threshold slope, or is changing over time, corrective action is taken.