The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper is a summary of a case study of a pulp and paper mill that had greater than 100 solidly grounded substations. In order to reduce the likelihood of an arc flash, they were changes to a high resistance grounded system. This change increased the safety and reliability of the facility as well as reduce arc flash incidences in the low-voltage substations.
This paper shows the advantages and disadvantages of different grounding in Mexico's refineries; as well as the opportunity to optimize the operating conditions, and correct maintenance procedures that may be reflected in preventive maintenance. The implementation of hybrid grounding methods for medium voltage generation sources for two of the six refineries in Mexico are presented. The grounding...
Este artículo muestra las ventajas y desventajas de la puesta a tierra en las refinerías de México hasta la actualidad así como, la oportunidad de optimizar las condiciones operativas y las regulaciones de procedimientos de mantenimiento correctivo que pueden reflejarse en una administración preventiva. Se presenta la implementación de métodos de puesta a tierra híbridos en fuentes de generación de...
13.8 kV selective high resistance grounding systems for bus connected generators are non-existent due to two reasons: One, the stray capacitance current of the system can be high, (>10–12A); second the sensitivity and selectivity of the ground fault devices to detect low-levels of ground fault currents is required. The paper describes the relay types, sensors, settings on protective relays, flow...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.