Under Voltage definition

Under Voltage. The utility voltage is lower than the low voltage threshold and the UPS is using the battery to supply power.
Sample 1Sample 2Sample 3

Examples of Under Voltage in a sentence

  • All Facilities must meet performance requirements set forth in relevant sections of IEEE Standard 1547, in particular the attachments specific to Under Voltage Ride Through, Under Frequency Ride Through and VAr control.

  • Over and Under Voltage trip functions and over and under frequency trip functions.

  • Ashish Sharma, “Modeling and Analysis of Loads Under Voltage Dips Caused by Three Phase Faults”, Polytechnic Institute of NYU, Brooklyn, NY, May 2012.

  • Each Participating TO shall coordinate its Critical Protective Systems with the CAISO, other Transmission Owners, and Generators to ensure that its Remedial Action Schemes (“RAS”), Underfrequency Load Shedding (“UFLS”), and Under Voltage Load Shedding (“UVLS”) schemes function on a coordinated and complementary basis in accordance with WECC and NERC planning, reliability, and protection policies and standards.

  • Under Voltage The input voltage is higher than the high voltage threshold, and the UPS is using batteries to supply power.

  • Indexing time for unloading shall end when the last car in the train has been unloaded, and all gates, doors, and unloading appurtenances have been properly secured by Customer to allow for safe movement by DCR.

  • Batteries au lithium-ion (LiFePO₄)Les batteries au lithium-ion ne sont pas sujettes à la sulfutation et elles n'ont pas besoin d'être régulièrement chargées entièrement.Mais les batteries au lithium-ion sont très sensibles à la sous-tension ou à la surtension.C'est pourquoi, les batteries au lithium-ion sont souvent équipées d'un système intégré pour l'équilibrage des cellules et pour les protéger contre les tensions faibles (UVP : Under Voltage Protection — protection contre la sous-tension).

  • Each system or Facility that performs automatic load shedding, without human operator initiation, of 300 MW or more implementing Under Voltage Load Shedding (UVLS) or Under Frequency Load Shedding (UFLS) as required by the regional load shedding program.1.14.

  • If the protection cannot be checked in this way, the correct operation of the relay and tripping of the Isolating Switch should be verified by secondary injection.(only applies to critical) Under Voltage - Operation (a) With the generator running in parallel, raise the voltage setting of each phase in turn, until the relay operates on under voltage, tripping the Isolating Switch.

  • VSD shall have standard protections such as Heat Sink over temperature, Under Voltage and over voltage as minimum.

Related to Under Voltage

  • low voltage means the set of nominal voltage levels that are used for the distribution of electricity and whose upper limit is generally accepted to be an a.c. voltage of 1000V ( or a d.c. voltage of 1500 V). [SANS 1019]

  • voltage means the root-mean-square value of electrical potential between two conductors.

  • high voltage means the classification of an electric component or circuit, if its working voltage is > 60 V and ≤ 1500 V DC or > 30 V and ≤ 1000 V AC root mean square (rms).

  • medium voltage means the set of nominal voltage levels that lie above low voltage and below high voltage in the range of 1 kV to 44 kV;

  • High voltage bus means the electrical circuit, including the coupling system for charging the REESS that operates on a high voltage.

  • Working voltage means the highest value of an electrical circuit voltage root-mean-square (rms), specified by the manufacturer, which may occur between any conductive parts in open circuit conditions or under normal operating conditions. If the electrical circuit is divided by galvanic isolation, the working voltage is defined for each divided circuit, respectively.

  • Potential electrical output capacity means, with regard to a unit, 33 per- cent of the maximum design heat input of the unit.

  • Line-voltage regulation means the difference between the no-load and the load line potentials expressed as a percent of the load line potential. It is calculated using the following equation:

  • Rated Voltage means the manufacturer’s design voltage at which the transmission system is designed to operate or such lower voltage at which the line is charged, for the time being, in consultation with Transmission System Users;

  • Diameter means the diameter of the stem of a tree measured outside the bark at a specified point of measurement.

  • Generator Forced Outage means an immediate reduction in output or capacity or removal from service, in whole or in part, of a generating unit by reason of an Emergency or threatened Emergency, unanticipated failure, or other cause beyond the control of the owner or operator of the facility, as specified in the relevant portions of the PJM Manuals. A reduction in output or removal from service of a generating unit in response to changes in market conditions shall not constitute a Generator Forced Outage.

  • Backpressure means a pressure (caused by a pump, elevated tank or piping, boiler, or other means) on the consumer's side of the service connection that is greater than the pressure provided by the public water system and which may cause backflow.

  • Diameter at breast height (dbh) means the diameter of a tree at 4 1/2 feet above the ground measured from the uphill side.

  • Generator means a device that produces electricity.

  • X-ray high-voltage generator means a device which transforms electrical energy from the potential supplied by the x-ray control to the tube operating potential. The device may also include means for transforming alternating current to direct current, filament transformers for the x-ray tube(s), high-voltage switches, electrical protective devices, and other appropriate elements.

  • Generator Maintenance Outage means the scheduled removal from service, in whole or in part, of a generating unit in order to perform necessary repairs on specific components of the facility, if removal of the facility meets the guidelines specified in the PJM Manuals.

  • Density means the permitted number of dwelling units per

  • heat pump means a machine, a device or installation that transfers heat from natural surroundings such as air, water or ground to buildings or industrial applications by reversing the natural flow of heat such that it flows from a lower to a higher temperature. For reversible heat pumps, it may also move heat from the building to the natural surroundings;

  • Final RTO Unforced Capacity Obligation means the capacity obligation for the PJM Region, determined in accordance with RAA, Schedule 8. Financial Close:

  • Emergency generator means any generator of which the sole function is to provide emergency backup power during an interruption of electrical power from the electric utility. An emergency generator does not include:

  • Generator Planned Outage means the scheduled removal from service, in whole or in part, of a generating unit for inspection, maintenance or repair with the approval of the Office of the Interconnection in accordance with the PJM Manuals.

  • Small quantity generator means a generator who generates less than 1000 kg of hazardous waste in a calendar month.

  • Hydraulic lift tank means a tank holding hydraulic fluid for a closed-loop mechanical system that uses compressed air or hydraulic fluid to operate lifts, elevators, and other similar devices.

  • Energy Use Intensity (EUI means the kBTUs (1,000 British Thermal Units) used per square foot of gross floor area.

  • Valve means a device used to control the flow of water in the irrigation system.

  • Turbidity means the cloudy condition of water due to the presence of extremely fine particulate materials in suspension that interfere with the passage of light.