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	<title>Ver Pangonilo - Filipino Engineer &#187; Arc-Flash</title>
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	<description>Professional Electrical Engineer</description>
	<lastBuildDate>Tue, 07 Feb 2012 18:33:36 +0000</lastBuildDate>
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		<title>Arc-flash Hazard Protection &#8211; IEC Standard</title>
		<link>http://s.pangonilo.com/index.php/2009/11/arc-flash-hazard-protection-iec-standard.html</link>
		<comments>http://s.pangonilo.com/index.php/2009/11/arc-flash-hazard-protection-iec-standard.html#comments</comments>
		<pubDate>Mon, 09 Nov 2009 02:50:32 +0000</pubDate>
		<dc:creator>Ver</dc:creator>
				<category><![CDATA[Design]]></category>
		<category><![CDATA[IEC]]></category>
		<category><![CDATA[Standards]]></category>
		<category><![CDATA[Arc-Flash]]></category>
		<category><![CDATA[Protection]]></category>

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		<description><![CDATA[IEEE has dedicated standards in Arc-flash hazard mitigation and protection (IEEE 1584 &#38; NFPA 70E) while IEC has integrated its arc-flash protection into the IEC 62271-200, High-voltage switchgear and controlgear ÃƒÂ¢Ã¢â€šÂ¬Ã¢â‚¬Å“ Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV. IEC 62271-200 recommends metal-enclosed [...]]]></description>
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		<title>Calculating Flash Protection Boundary Distances</title>
		<link>http://s.pangonilo.com/index.php/2009/01/calculating-flash-protection-boundary-distances.html</link>
		<comments>http://s.pangonilo.com/index.php/2009/01/calculating-flash-protection-boundary-distances.html#comments</comments>
		<pubDate>Tue, 06 Jan 2009 12:37:33 +0000</pubDate>
		<dc:creator>Ver</dc:creator>
				<category><![CDATA[Safety]]></category>
		<category><![CDATA[Arc-Flash]]></category>
		<category><![CDATA[Hazards]]></category>

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		<description><![CDATA[In NFPA 70E, the short-circuit symmetrical ampacity from a bolted 3-phase fault at the transformer terminals is calculated with the following formula: Isc = {[MVA Base ÃƒÆ’Ã¢â‚¬â€ 106] ÃƒÆ’Ã‚Â· [1.732 ÃƒÆ’Ã¢â‚¬â€ V]} ÃƒÆ’Ã¢â‚¬â€ {100 ÃƒÆ’Ã‚Â· %Z} where Isc = Amperes, V = Volts, %Z = transformer MVA. A typical value for the maximum power (in [...]]]></description>
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