<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>CR4 - Forum&#x3a; Electrical Engineering</title><link>https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;forum&#x2f;electrical-engineering</link><description><![CDATA[Sensors and switches, power generation and distribution, test and measurement, alternative and renewable energy sources, etc.]]></description><copyright>Copyright 2026</copyright><pubDate>Thu, 20 Aug 2026 03:25:13 EST</pubDate><generator>https&#x3a;&#x2f;&#x2f;cr4.globalspec.com</generator><item><title><![CDATA[FANUC aiSV 40&#x2f;40 SP1241 &#x2014; Accel-only Intermittent, Gate Driver Suspicion]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151658&#x2f;FANUC-aiSV-40-40-SP1241-Accel-only-Intermittent-Gate-Driver-Suspicion&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Been chasing this one for two days and need a sanity check.&#xd; Customer&#x27;s &#x26;alpha&#x3b;iSV 40&#x2f;40 &#x28;A06B-6117-H105&#x29; throws SP1241 on spindle acceleration. Random &#x26;mdash&#x3b; maybe 1 in 7 accel events. Power cycle clears it, no other alarms, no pattern in load or speed. Decel and steady-state are clean.&#xd; I reprodu]]></description><pubDate>Thu, 20 Aug 2026 03&#x3a;25&#x3a;13 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151658&#x2f;FANUC-aiSV-40-40-SP1241-Accel-only-Intermittent-Gate-Driver-Suspicion]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[LV Switchgear - IEC 61439 - Temperature Rise]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151648&#x2f;LV-Switchgear-IEC-61439-Temperature-Rise&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[The specification says, &#x22; LV Switchgear Bus bar temperature rise shall not exceed 45&#x26;deg&#x3b;C under rated current&#x22;.&#xa;&#xa;The ambient temperature is around 45&#x26;deg&#x3b;C.&#xa;&#xa;It means the maximum permitted operational temperature under normal service conditions is 90&#x26;deg&#x3b;C &#x28;permitted temperature rise &#x2b; Ambient temp]]></description><pubDate>Fri, 14 Aug 2026 15&#x3a;58&#x3a;13 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151648&#x2f;LV-Switchgear-IEC-61439-Temperature-Rise]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[How Do We Move EMC from a Final Compliance Test to a Sequence of Engineering Design Gates&#x3f;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151640&#x2f;How-Do-We-Move-EMC-from-a-Final-Compliance-Test-to-a-Sequence-of-Engineering-Design-Gates&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Too often, EMC is treated as something to verify after the layout, enclosure, cabling, and firmware are already fixed. By that stage, the available corrective actions are usually limited, expensive, and disruptive.&#xa;&#xa;A better approach is to review EMC risk progressively during development. That means]]></description><pubDate>Wed, 12 Aug 2026 00&#x3a;37&#x3a;41 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151640&#x2f;How-Do-We-Move-EMC-from-a-Final-Compliance-Test-to-a-Sequence-of-Engineering-Design-Gates]]></guid><dc:creator>stancermtl</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[ONAN Transformer Radiator Oil Leak ]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151632&#x2f;ONAN-Transformer-Radiator-Oil-Leak&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[I have transformer that has sustained some damage to the fins. A previous cold weld repair was attempted&#x3b; however, it has not provided a durable seal and is no longer effective as there is an oil leak.&#xa;&#xa;Does anyone have experience with a similar problem&#x2f; any recommendations.&#xa;&#xa;Cheers.]]></description><pubDate>Mon, 10 Aug 2026 01&#x3a;47&#x3a;29 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151632&#x2f;ONAN-Transformer-Radiator-Oil-Leak]]></guid><dc:creator>Mathias Malandu</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[IEC 61439-2 - Form of Separation - Metallic Versus Non Metallic Barrier]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151626&#x2f;IEC-61439-2-Form-of-Separation-Metallic-Versus-Non-Metallic-Barrier&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[sorry for the dumb question&#x3a; The standard states that separation may be achieved by means of partitions or barriers &#x28;metallic or non-metallic&#x29;, insulation of live parts or by the integral housing of a device itself &#x28;e.g. MCCB&#x29;.&#xa;&#xa;Then everyone may prefer to use non metallic &#x28;acrylic sheets&#x29;&#x3b; Why do m]]></description><pubDate>Mon, 03 Aug 2026 14&#x3a;52&#x3a;12 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151626&#x2f;IEC-61439-2-Form-of-Separation-Metallic-Versus-Non-Metallic-Barrier]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>Electrical Engineering</dc:subject></item></channel></rss>