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> <channel><title>CsanyiGroup &#187; protection</title> <atom:link href="http://www.csanyigroup.com/tag/protection/feed" rel="self" type="application/rss+xml" /><link>http://www.csanyigroup.com</link> <description>Electrical engineering portal</description> <lastBuildDate>Mon, 22 Aug 2011 14:01:32 +0000</lastBuildDate> <language>en</language> <sy:updatePeriod>hourly</sy:updatePeriod> <sy:updateFrequency>1</sy:updateFrequency> <generator>http://wordpress.org/?v=3.0.3</generator> <item><title>Line Protection With Distance Relays</title><link>http://www.csanyigroup.com/line-protection-with-distance-relays</link> <comments>http://www.csanyigroup.com/line-protection-with-distance-relays#comments</comments> <pubDate>Mon, 01 Nov 2010 17:59:17 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[Protection Relays]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[distance]]></category> <category><![CDATA[ground]]></category> <category><![CDATA[impedance]]></category> <category><![CDATA[line]]></category> <category><![CDATA[mho]]></category> <category><![CDATA[overcurrent]]></category> <category><![CDATA[phase-fault]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[reactance]]></category> <category><![CDATA[relaying]]></category> <category><![CDATA[relays]]></category> <category><![CDATA[resistance]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=5785</guid> <description><![CDATA[Distance relaying should be considered when overcurrent relaying is too slow or is not selective. Distance relays are generally used for phase-fault primary and back-up protection on subtransmission lines, and on transmission lines where high-speed automatic reclosing is not necessary to maintain stability and where the short time delay for end-zone faults can be tolerated. [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/line-protection-with-distance-relays/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>UPS design criteria and selection</title><link>http://www.csanyigroup.com/ups-design-criteria-and-selection</link> <comments>http://www.csanyigroup.com/ups-design-criteria-and-selection#comments</comments> <pubDate>Fri, 22 Oct 2010 19:50:22 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[Energy And Power]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[alternate]]></category> <category><![CDATA[backup source]]></category> <category><![CDATA[electric utility]]></category> <category><![CDATA[maintenance]]></category> <category><![CDATA[power]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[ups]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=5772</guid> <description><![CDATA[An UPS system is an alternate or backup source of power with the electric utility company being the primary source. The UPS provides protection of load against line frequency variations, elimination of power line noise and voltage transients, voltage regulation, and uninterruptible power for critical loads during failures of normal utility source. An UPS can [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/ups-design-criteria-and-selection/feed</wfw:commentRss> <slash:comments>3</slash:comments> </item> <item><title>Arc-resistant low voltage switchgear</title><link>http://www.csanyigroup.com/arc-resistant-low-voltage-switchgear</link> <comments>http://www.csanyigroup.com/arc-resistant-low-voltage-switchgear#comments</comments> <pubDate>Sat, 16 Oct 2010 12:52:24 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[Low Voltage]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[ansi]]></category> <category><![CDATA[arc-resistant]]></category> <category><![CDATA[eaton]]></category> <category><![CDATA[enclosure]]></category> <category><![CDATA[interlocking]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[short circuit]]></category> <category><![CDATA[switchgear]]></category> <category><![CDATA[testing. breaker]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=5716</guid> <description><![CDATA[For years, electrical equipment has been designed to withstand and deal with the issue of bolted faults, where the current spikes to a dangerously high level but is safely interrupted by the protective devices contained in the equipment (breakers, fuses and relays). However, these devices typically do not detect and interrupt dangerous internal arcing faults, [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/arc-resistant-low-voltage-switchgear/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>ABB Feeder Protection REF615 ANSI</title><link>http://www.csanyigroup.com/abb-feeder-protection-ref615-ansi</link> <comments>http://www.csanyigroup.com/abb-feeder-protection-ref615-ansi#comments</comments> <pubDate>Wed, 16 Jun 2010 20:31:37 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[Protection Relays]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[abb]]></category> <category><![CDATA[breaker]]></category> <category><![CDATA[bus]]></category> <category><![CDATA[discontinuity]]></category> <category><![CDATA[failure]]></category> <category><![CDATA[fault]]></category> <category><![CDATA[feeder]]></category> <category><![CDATA[goose]]></category> <category><![CDATA[high impedance]]></category> <category><![CDATA[instantaneous]]></category> <category><![CDATA[negative sequence]]></category> <category><![CDATA[overcurrent]]></category> <category><![CDATA[phase]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[ref]]></category> <category><![CDATA[ref615]]></category> <category><![CDATA[relay]]></category> <category><![CDATA[thermal overload]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=4508</guid> <description><![CDATA[The REF615 is powerful, most advanced and simplest feeder protection relay in its class, perfectly offering time and instantaneous overcurrent, negative sequence overcurrent, phase discontinuity, breaker failure and thermal overload protection. The relay also features optional high impedance fault (HIZ) and sensitive earth fault (SEF) protection for grounded and ungrounded distribution systems. Also, the relay [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/abb-feeder-protection-ref615-ansi/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>Short Circuit Current Calculator &amp; Group Motor Protection</title><link>http://www.csanyigroup.com/short-circuit-current-calculator-and-group-motor-protection</link> <comments>http://www.csanyigroup.com/short-circuit-current-calculator-and-group-motor-protection#comments</comments> <pubDate>Sun, 14 Feb 2010 15:44:26 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[Updates And Announcements]]></category> <category><![CDATA[calculator]]></category> <category><![CDATA[electrical engineering]]></category> <category><![CDATA[guide]]></category> <category><![CDATA[motor]]></category> <category><![CDATA[Programi]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[short circuit]]></category> <category><![CDATA[stručni programi]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=1626</guid> <description><![CDATA[We have updated the electrical engineering software list on our webpage Stručni programi. Two new software are added to the list: Short-Circuit Current Calculator and Group Motor Protection Guide. These software programs are intended to clearly present product data and technical information that will help the end user with design applications. Both softwares belong to [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/short-circuit-current-calculator-and-group-motor-protection/feed</wfw:commentRss> <slash:comments>3</slash:comments> </item> <item><title>Maintenance Of Molded Case Circuit Breakers (MCCB)</title><link>http://www.csanyigroup.com/maintenance-of-molded-case-circuit-breakers-mccb</link> <comments>http://www.csanyigroup.com/maintenance-of-molded-case-circuit-breakers-mccb#comments</comments> <pubDate>Wed, 13 Jan 2010 21:27:20 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[Low Voltage]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[circuit breaker]]></category> <category><![CDATA[maintenance]]></category> <category><![CDATA[mccb]]></category> <category><![CDATA[nsulation]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[resistance]]></category> <category><![CDATA[routine]]></category> <category><![CDATA[switching]]></category> <category><![CDATA[test]]></category> <category><![CDATA[tripping]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=1599</guid> <description><![CDATA[The maintenance of circuit breakers deserves special consideration because of their importance for routine switching and for protection of other equipment. Electric transmission system breakups and equip­ment destruction can occur if a circuit breaker fails to operate because of a lack of preventive maintenance. The need for maintenance of circuit breakers is often not obvious [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/maintenance-of-molded-case-circuit-breakers-mccb/feed</wfw:commentRss> <slash:comments>3</slash:comments> </item> <item><title>Gas-Insulated Switchgear Type 8DN8</title><link>http://www.csanyigroup.com/gas-insulated-switchgear-type-8dn8</link> <comments>http://www.csanyigroup.com/gas-insulated-switchgear-type-8dn8#comments</comments> <pubDate>Tue, 24 Nov 2009 21:51:13 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[High Voltage]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[8DN8]]></category> <category><![CDATA[earthing switch]]></category> <category><![CDATA[feeder protection]]></category> <category><![CDATA[gas-insulated]]></category> <category><![CDATA[gis]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[siemens]]></category> <category><![CDATA[substation]]></category> <category><![CDATA[switchgear]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=1251</guid> <description><![CDATA[A fundamental feature of Siemens gas-insulated switchgear is the high degree of versatility provided by its modular system. Depending on their respective functions, the components are housed either individually and/or combined in compressed gas-tight enclosures. With a remarkably small number of active and passive modules, all customary circuit variants are possible. Sulphur hexafluoride (SF6) is [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/gas-insulated-switchgear-type-8dn8/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>Grounded or Ungrounded Systems</title><link>http://www.csanyigroup.com/grounded-or-ungrounded-systems</link> <comments>http://www.csanyigroup.com/grounded-or-ungrounded-systems#comments</comments> <pubDate>Sun, 22 Nov 2009 16:02:15 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[Energy And Power]]></category> <category><![CDATA[Power Substations]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[conductor]]></category> <category><![CDATA[detector]]></category> <category><![CDATA[grounded]]></category> <category><![CDATA[grounding]]></category> <category><![CDATA[high impedance]]></category> <category><![CDATA[NEC section]]></category> <category><![CDATA[protect]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[safety]]></category> <category><![CDATA[system]]></category> <category><![CDATA[ungrounded]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=1250</guid> <description><![CDATA[Ungrounded systems may provide greater continuity of operations in the event of a ground fault. However, the second fault will most likely be more catastrophic than a grounded system fault. Whenever ungrounded systems are used in a facility, the maintenance personnel should receive training in how to detect and troubleshoot the first ground on an [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/grounded-or-ungrounded-systems/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>ANSI code 50BF &#8211; Breaker failure</title><link>http://www.csanyigroup.com/ansi-code-50bf-breaker-failure</link> <comments>http://www.csanyigroup.com/ansi-code-50bf-breaker-failure#comments</comments> <pubDate>Sat, 17 Oct 2009 19:54:38 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[ANSI Standards]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[50bf]]></category> <category><![CDATA[50N/51N]]></category> <category><![CDATA[ansi code]]></category> <category><![CDATA[breaker failure]]></category> <category><![CDATA[fault]]></category> <category><![CDATA[overcurrent]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[tripping]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=1123</guid> <description><![CDATA[This function is designed to detect the failure of breakers that do not open when a tripping order is sent. The &#8220;breaker failure&#8221; protection function is activated by an O1 output tripping order received from the overcurrent protection functions (50/51, 50N/51N, 46, 67N, 67). It checks for the disappearance of current during the time interval [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/ansi-code-50bf-breaker-failure/feed</wfw:commentRss> <slash:comments>2</slash:comments> </item> <item><title>ANSI standards for protection devices</title><link>http://www.csanyigroup.com/ansi-standards-for-protection-devices</link> <comments>http://www.csanyigroup.com/ansi-standards-for-protection-devices#comments</comments> <pubDate>Sun, 13 Sep 2009 14:13:10 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[ANSI Standards]]></category> <category><![CDATA[Protection Relays]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[ansi]]></category> <category><![CDATA[breaker]]></category> <category><![CDATA[earth fault]]></category> <category><![CDATA[overpower]]></category> <category><![CDATA[phase overcurrent]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[relay]]></category> <category><![CDATA[standard]]></category> <category><![CDATA[thermostat]]></category> <category><![CDATA[unbalance]]></category> <category><![CDATA[underpower]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=1001</guid> <description><![CDATA[In the design of electrical power systems, the ANSI Standard Device Numbers denote what features a protective device supports (such as a relay or circuit breaker). These types of devices protect electrical systems and components from damage when an unwanted event occurs, such as an electrical fault. ANSI numbers are used to identify the functions [...]]]></description> <wfw:commentRss>http://www.csanyigroup.com/ansi-standards-for-protection-devices/feed</wfw:commentRss> <slash:comments>4</slash:comments> </item> <item><title>MV-LV Transformer Substations Short Circuits</title><link>http://www.csanyigroup.com/mv-lv-transformer-substations-short-circuits</link> <comments>http://www.csanyigroup.com/mv-lv-transformer-substations-short-circuits#comments</comments> <pubDate>Sat, 15 Aug 2009 18:43:22 +0000</pubDate> <dc:creator>ecsanyi</dc:creator> <category><![CDATA[Low Voltage]]></category> <category><![CDATA[Medium Voltage]]></category> <category><![CDATA[Technical Articles]]></category> <category><![CDATA[abb]]></category> <category><![CDATA[calculation]]></category> <category><![CDATA[chort circuit]]></category> <category><![CDATA[circuit breaker]]></category> <category><![CDATA[lv]]></category> <category><![CDATA[mv]]></category> <category><![CDATA[protection]]></category> <category><![CDATA[substation]]></category> <guid
isPermaLink="false">http://www.csanyigroup.com/?p=1057</guid> <description><![CDATA[An electrical transformer substation consist of a whole set of devices (conductors, measuring and control aparatus and electric machines) dedicated to transforming the voltage supplied by the medium voltage distribution grid (e.g. 12kV or 20kV), into voltage suitable for supplying low voltagelines wit power (400V-690V). . Related articles]]></description> <wfw:commentRss>http://www.csanyigroup.com/mv-lv-transformer-substations-short-circuits/feed</wfw:commentRss> <slash:comments>1</slash:comments> </item> </channel> </rss>
