{"id":3810,"date":"2026-03-26T07:00:18","date_gmt":"2026-03-26T06:00:18","guid":{"rendered":"https:\/\/tramoetv.se\/?p=3810"},"modified":"2026-03-26T12:13:11","modified_gmt":"2026-03-26T11:13:11","slug":"four-customized-sine-wave-filters-for-the-mining-industry","status":"publish","type":"post","link":"https:\/\/tramoetv.se\/en\/four-customized-sine-wave-filters-for-the-mining-industry\/","title":{"rendered":"Four customized Sine wave filters for the mining industry"},"content":{"rendered":"<p>Four customized Sine wave filters are now in operation at a customer in the mining industry in northern Sweden. <strong><a href=\"https:\/\/www.granitor.se\/systems\">Granitor Systems<\/a> <\/strong>was commissioned to deliver a container solution for power distribution, where Tramo delivered Sine wave filters as part of the system. Sine wave filters supplied are used in pumps driven by frequency controlled (VFD) motors. High demands in this application led us to develop a customized solution.  <\/p>\n<h2>Did you know that?<\/h2>\n<p>With <strong><a href=\"https:\/\/tramoetv.se\/en\/sine-filters\/\">Sine wave filter<\/a> <\/strong>both voltage and current go from unfiltered to ideal sinusoidal waveforms of up to 500m.<\/p>\n<h2><b><span data-contrast=\"auto\">The problem<\/span><\/b><\/h2>\n<p><span data-contrast=\"auto\">Already during the design phase, Granitor realized that an inductor was not enough as the motor manufacturer had specified that a Sine wave filter was required and the cable length was 320m.<\/span><span data-ccp-props=\"{\"335559738\":240,\"335559739\":240}\"> <\/span><\/p>\n<p><span data-contrast=\"auto\">With a clear specification of requirements, both in terms of technical parameters and geographical location, Tramo&#8217;s technical team was able to develop the right solution.  <\/span><span data-ccp-props=\"{\"335559738\":240,\"335559739\":240}\"> <\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3757\" src=\"https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/utan_sinusfilter_690V_1200px.png\" alt=\"Sine wave 690 V without sine wave filter  \" width=\"1200\" height=\"612\" srcset=\"https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/utan_sinusfilter_690V_1200px.png 1200w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/utan_sinusfilter_690V_1200px-300x153.png 300w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/utan_sinusfilter_690V_1200px-1024x522.png 1024w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/utan_sinusfilter_690V_1200px-768x392.png 768w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/utan_sinusfilter_690V_1200px-600x306.png 600w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/utan_sinusfilter_690V_1200px-100x51.png 100w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/utan_sinusfilter_690V_1200px-1184x604.png 1184w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<h2><span data-ccp-props=\"{\"335559738\":240,\"335559739\":240}\">The solution<\/span><\/h2>\n<p><span data-contrast=\"auto\">With information on power requirements, rated voltage and power factor, the Sine wave filter could be dimensioned for the right current and according to the right characteristics. As space was limited, a joint decision was made to place the units outside the container itself. With the right IP rating together with a filter fan with an air flow of 12m\u00b3\/h, the filter could be designed and optimized.  <\/span><\/p>\n<p><span data-contrast=\"auto\">After commissioning, the frequency-controlled motors can be safely run &amp; protected against<\/span><span data-ccp-props=\"{\"335559738\":240,\"335559739\":240}\"> <\/span><\/p>\n<ul>\n<li><span data-contrast=\"auto\">Tension spikes<\/span><\/li>\n<li><span data-contrast=\"auto\">bearing currents<\/span><\/li>\n<li><span data-contrast=\"auto\">Switched sounds in the engine<\/span><span data-ccp-props=\"{\"335559738\":240,\"335559739\":240}\"> <\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">This extends the service life and reduces the need for servicing. Losses in the engine are also drastically reduced, which means that most of the power is used instead of being dissipated as heat.   <\/span><span data-ccp-props=\"{\"335559738\":240,\"335559739\":240}\"> <\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3761\" src=\"https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/med_sinusfilter_1200px.png\" alt=\"Sine wave 690 V with sine wave filter\" width=\"1200\" height=\"656\" srcset=\"https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/med_sinusfilter_1200px.png 1200w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/med_sinusfilter_1200px-300x164.png 300w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/med_sinusfilter_1200px-1024x560.png 1024w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/med_sinusfilter_1200px-768x420.png 768w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/med_sinusfilter_1200px-600x328.png 600w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/med_sinusfilter_1200px-100x55.png 100w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/med_sinusfilter_1200px-1184x647.png 1184w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p>Do you have a power quality problem that you need help with?  <a href=\"https:\/\/tramoetv.se\/en\/contact-tramo-etv\/\"><strong>Contact Tramo!<\/strong> <\/a>  We have a knowledgeable technical team that will develop a solution tailored to your application.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3806\" src=\"https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2.png\" alt=\"Encapsulated Sine wave filter\" width=\"1792\" height=\"1008\" srcset=\"https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2.png 1792w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2-300x169.png 300w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2-1024x576.png 1024w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2-768x432.png 768w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2-1536x864.png 1536w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2-600x338.png 600w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2-100x56.png 100w, https:\/\/tramoetv.se\/wp-content\/uploads\/2026\/03\/VZ1000739_Camera_Camera-2-1184x666.png 1184w\" sizes=\"auto, (max-width: 1792px) 100vw, 1792px\" \/><\/p>\n<hr>\n<h3>What does a Sine wave filter do?<\/h3>\n<ul>\n<li>Poor power quality in AC drive operation can cause overheating and increased wear in motors<\/li>\n<li>A Sine wave filter protects frequency controlled motors against bearing currents, voltage peaks and insulation faults<\/li>\n<li>Extends engine life and reduces maintenance costs<\/li>\n<li>Easy to apply without interfering with the engine design<\/li>\n<\/ul>\n<p>The Sine wave filter can be applied to a wide range of applications, without interfering with the engine design.<\/p>\n<h3>Recommended applications for Sine wave filters:<\/h3>\n<p>The Sine wave filter can be applied to a wide range of applications, without interfering with the engine design.<\/p>\n<ul>\n<li>Motors where magnetic noise from PWM voltage needs to be eliminated<\/li>\n<li>Engines used in aggressive environments or at high temperatures<\/li>\n<li>Applications with motor cables between 150-300m and longer, both shielded and unshielded cables<\/li>\n<li>Applications where the service interval needs to be extended<\/li>\n<li>Applications with 690V &amp; general motors<\/li>\n<li>Cases where the frequency converter is connected to a transformer<\/li>\n<\/ul>\n<p><strong>Read more about our range of Sine wave filters and download your datasheet <a href=\"https:\/\/tramoetv.se\/en\/sine-filters\/\">here!<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Four customized Sine wave filters are now in operation at a customer in the mining industry in northern Sweden. Granitor Systems was commissioned to deliver a container solution for power distribution, where Tramo delivered Sine wave filters as part of the system. Sine wave filters supplied are used in pumps driven by frequency controlled (VFD) motors. High demands in this application led us to develop a customized solution. Did you know that? With Sine wave &#8230; <a href=\"https:\/\/tramoetv.se\/en\/four-customized-sine-wave-filters-for-the-mining-industry\/\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":3769,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[57],"tags":[],"class_list":["post-3810","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Four customized Sine wave filters for the mining industry - Tramo<\/title>\n<meta name=\"description\" content=\"Read how Tramo developed a customized Sine wave filter for Granitor Systems. 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