{"id":1082,"date":"2026-10-28T14:42:51","date_gmt":"2026-10-28T14:42:51","guid":{"rendered":"https:\/\/www.astsystem.pl\/en\/?post_type=product&#038;p=1082"},"modified":"2026-10-28T14:49:13","modified_gmt":"2026-10-28T14:49:13","slug":"silentvar-reactive-power-compensator-model-s","status":"publish","type":"product","link":"https:\/\/www.astsystem.pl\/en\/produkt\/silentvar-reactive-power-compensator-model-s\/","title":{"rendered":"SILENTVAR REACTIVE POWER COMPENSATOR \u2014 MODEL S"},"content":{"rendered":"\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 50%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-1082 gallery-columns-2 gallery-size-medium'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.astsystem.pl\/en\/?attachment_id=1084'><img width=\"300\" height=\"300\" src=\"https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S-300x300.png\" class=\"attachment-medium size-medium\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S-300x300.png 300w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S-1024x1024.png 1024w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S-150x150.png 150w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S-768x768.png 768w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S-75x75.png 75w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S-600x600.png 600w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S-100x100.png 100w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialus-SILENTVAR-valdiklis-su-antena_Model_S.png 1254w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.astsystem.pl\/en\/?attachment_id=1081'><img width=\"300\" height=\"274\" src=\"https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialny-kompensator-mocy-biernej-SILENTVAR_miodel_L_N-1-300x274.png\" class=\"attachment-medium size-medium\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialny-kompensator-mocy-biernej-SILENTVAR_miodel_L_N-1-300x274.png 300w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialny-kompensator-mocy-biernej-SILENTVAR_miodel_L_N-1-1024x936.png 1024w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialny-kompensator-mocy-biernej-SILENTVAR_miodel_L_N-1-768x702.png 768w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialny-kompensator-mocy-biernej-SILENTVAR_miodel_L_N-1-600x548.png 600w, https:\/\/www.astsystem.pl\/en\/wp-content\/uploads\/2026\/10\/Industrialny-kompensator-mocy-biernej-SILENTVAR_miodel_L_N-1.png 1312w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<hr \/>\n<p><strong>Wireless measurement. Greater installation flexibility.<\/strong><\/p>\n<p>SILENTVAR supports wireless measurement of electrical parameters, reducing the need for additional measurement wiring. This makes it easier to choose the compensator\u2019s mounting location and adapt the system to existing installation conditions.<\/p>\n<p>The solution is particularly useful where modifying the installation is difficult, costly or undesirable, including heritage buildings.<\/p>\n<p>The system also supports wired measurement using a conventional current transformer or a split-core current transformer with a <strong>5 A secondary output<\/strong>.<\/p>\n<hr \/>\n<p><strong>Silence is part of the technology<\/strong><\/p>\n<p>SILENTVAR operates without fans or the characteristic sounds of compensation step switching.<\/p>\n<p>Quiet operation is particularly valuable in urban spaces, commercial facilities, offices and other locations where noise from technical equipment is undesirable<\/p>\n<hr \/>\n<p><strong>Compact controller. Flexible component positioning.<\/strong><\/p>\n<p>The SILENTVAR S controller measures <strong>190 \u00d7 39 \u00d7 160 mm<\/strong>. Its slim enclosure and DIN rail mounting capability simplify installation in cabinets with limited space.<\/p>\n<p>Separate mounting of the controller and reactor allows the components to be positioned to suit the cabinet layout, which is particularly useful when upgrading existing switchboards.<\/p>\n<p>The reactor design enables multi-step reactive power regulation. Depending on the configuration, the system can work with additional reactors to extend the available compensation range<\/p>\n<hr \/>\n<p><strong>Automatic. Precise. Without ongoing user intervention.<\/strong><\/p>\n<p>SILENTVAR monitors installation parameters and continuously adjusts the compensation level as the load changes.<\/p>\n<p>The system includes:<\/p>\n<ul>\n<li>automatic reactive power compensation,<\/li>\n<li><strong>SMART<\/strong> operating mode,<\/li>\n<li>reactor self-calibration,<\/li>\n<li>single-step compensation tuning,<\/li>\n<li>adjustment of the <strong>tan \u03c6<\/strong> factor,<\/li>\n<li>time hysteresis between regulation step changes,<\/li>\n<li>overcurrent protection,<\/li>\n<li>automatic thermal protection,<\/li>\n<li>reactor temperature and compensation status alarms.<\/li>\n<\/ul>\n<p>During normal operation, the device requires no ongoing user intervention.<\/p>\n<p><strong>Ready for integration<\/strong><\/p>\n<p>SILENTVAR supports remote parameter reading, setting changes and integration with external automation and monitoring systems.<\/p>\n<p>Available communication options include:<\/p>\n<ul>\n<li><strong>Wi-Fi<\/strong>,<\/li>\n<li><strong>Ethernet<\/strong>,<\/li>\n<li><strong>Modbus<\/strong>,<\/li>\n<li><strong>REST API<\/strong>.<\/li>\n<\/ul>\n<p>A built-in display provides local access to network and compensation parameters.<\/p>\n<p>The device can work with the <strong>ASTgsm LTE control and monitoring system from AST System<\/strong>, enabling reactive power compensation to be integrated with lighting infrastructure monitoring<\/p>\n<hr \/>\n<p><strong>Benefits<\/strong><\/p>\n<p>The SILENTVAR S system helps to:<\/p>\n<ul>\n<li>reduce reactive energy charges,<\/li>\n<li>automatically adjust compensation to the current load,<\/li>\n<li>reduce the need for manual adjustment,<\/li>\n<li>position the controller and reactor flexibly within the available space,<\/li>\n<li>simplify upgrades to existing cabinets and switchboards,<\/li>\n<li>reduce additional measurement wiring,<\/li>\n<li>provide quiet, fanless operation,<\/li>\n<li>remotely monitor parameters and change settings,<\/li>\n<li>expand the system with additional reactors,<\/li>\n<li>integrate compensation with infrastructure management systems.<\/li>\n<\/ul>\n<hr \/>\n<p><strong>Key features<\/strong><\/p>\n<ul>\n<li>Operation in <strong>single-phase and three-phase installations<\/strong>, depending on the configuration.<\/li>\n<li>Automatic reactive power compensation.<\/li>\n<li><strong>SMART<\/strong> operating mode.<\/li>\n<li>Wireless parameter measurement.<\/li>\n<li>Wired measurement using a current transformer with a <strong>5 A secondary output<\/strong>.<\/li>\n<li><strong>Up to 43 regulation steps<\/strong>, depending on the configuration.<\/li>\n<li>Compensation adjustment range of <strong>12\u2013100%<\/strong>.<\/li>\n<li>Reactor self-calibration.<\/li>\n<li>Single-step compensation tuning.<\/li>\n<li>Adjustment of the <strong>tan \u03c6<\/strong> factor.<\/li>\n<li>Time hysteresis between regulation step changes.<\/li>\n<li>Support for additional reactors.<\/li>\n<li>Display of network and compensation parameters.<\/li>\n<li>Remote parameter reading and setting changes.<\/li>\n<li><strong>Wi-Fi, Ethernet and Modbus<\/strong> communication.<\/li>\n<li><strong>REST API<\/strong>.<\/li>\n<li>Overcurrent and thermal protection.<\/li>\n<li>Reactor temperature and compensation status alarms.<\/li>\n<li>Quiet, fanless operation.<\/li>\n<li>Separate controller and reactor design.<\/li>\n<li>Vertical or horizontal installation and DIN rail mounting.<\/li>\n<li>Compatibility with the <strong>ASTgsm LTE control and monitoring system from AST System<\/strong>, enabling reactive power compensation to be integrated with lighting infrastructure monitoring.<\/li>\n<\/ul>\n<hr \/>\n<p><strong>Technical specifications<\/strong><\/p>\n<p><strong>Power supply<\/strong><\/p>\n<ul>\n<li>Supply voltage: <strong>230 V AC<\/strong><\/li>\n<li>Voltage tolerance: <strong>\u221210% \/ +15%<\/strong><\/li>\n<\/ul>\n<p><strong>Compensation and control<\/strong><\/p>\n<ul>\n<li>Installation type: <strong>single-phase or three-phase<\/strong>, depending on the configuration<\/li>\n<li>System compensation output range: <strong>35\u20137600 var<\/strong>, depending on the configuration and reactors used<\/li>\n<li>Number of regulation steps: <strong>10\u201343<\/strong>, depending on the configuration<\/li>\n<li>Compensation adjustment range: <strong>12\u2013100%<\/strong><\/li>\n<li><strong>SMART<\/strong> operating mode<\/li>\n<li>Adjustment of the <strong>tan \u03c6<\/strong> factor<\/li>\n<li>Reactor self-calibration<\/li>\n<li>Single-step compensation tuning<\/li>\n<li>Time hysteresis between regulation step changes<\/li>\n<li>Support for additional reactors<\/li>\n<\/ul>\n<p><strong>Measurement<\/strong><\/p>\n<ul>\n<li>Wireless remote parameter measurement capability<\/li>\n<li>Wired measurement option<\/li>\n<li>Support for conventional or split-core current transformers with a <strong>5 A secondary output<\/strong><\/li>\n<li>Local parameter readings on the display<\/li>\n<\/ul>\n<p><strong>Communication<\/strong><\/p>\n<ul>\n<li>Wi-Fi<\/li>\n<li>Ethernet<\/li>\n<li>Modbus<\/li>\n<li>REST API<\/li>\n<li>Remote parameter reading and setting changes<\/li>\n<li>Compatibility with the <strong>ASTgsm LTE system from AST System<\/strong><\/li>\n<\/ul>\n<p><strong>Protection and alarms<\/strong><\/p>\n<ul>\n<li>Overcurrent protection<\/li>\n<li>Automatic thermal protection<\/li>\n<li>Reactor temperature alarm<\/li>\n<li>Compensation status alarm<\/li>\n<\/ul>\n<p><strong>Mechanical specifications<\/strong><\/p>\n<ul>\n<li>Design: <strong>separately mounted controller and reactor<\/strong><\/li>\n<li>Protection rating: <strong>IP20<\/strong><\/li>\n<li>Controller dimensions: <strong>190 \u00d7 39 \u00d7 160 mm<\/strong><\/li>\n<li>Reactor dimensions: <strong>depending on the selected configuration<\/strong><\/li>\n<\/ul>\n<p><strong>Installation<\/strong><\/p>\n<ul>\n<li>In control and lighting cabinets<\/li>\n<li>Controller suitable for DIN rail mounting<\/li>\n<li>Vertical or horizontal orientation<\/li>\n<li>Separate positioning of the controller and reactor<\/li>\n<\/ul>\n<p><strong>Operating conditions<\/strong><\/p>\n<ul>\n<li>Operating temperature: <strong>\u221220\u00b0C to +60\u00b0C<\/strong><\/li>\n<\/ul>\n<hr \/>\n<p><strong>Five versions. One system.<\/strong><\/p>\n<p>SILENTVAR S is available in five configurations with different compensation outputs and numbers of regulation steps.<\/p>\n<table>\n<tbody>\n<tr>\n<td><strong>Model<\/strong><\/td>\n<td><strong>Compensation output<\/strong><\/td>\n<td><strong>Number of regulation steps<\/strong><\/td>\n<td><strong>Controller dimensions<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>S 320\/10<\/strong><\/td>\n<td>320 var<\/td>\n<td>Up to 10<\/td>\n<td>190 \u00d7 39 \u00d7 160 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>S 720\/10<\/strong><\/td>\n<td>720 var<\/td>\n<td>Up to 10<\/td>\n<td>190 \u00d7 39 \u00d7 160 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>S 1600\/10<\/strong><\/td>\n<td>1600 var<\/td>\n<td>Up to 10<\/td>\n<td>190 \u00d7 39 \u00d7 160 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>S 1520\/21<\/strong><\/td>\n<td>1520 var<\/td>\n<td>Up to 21<\/td>\n<td>190 \u00d7 39 \u00d7 160 mm<\/td>\n<\/tr>\n<tr>\n<td><strong>S 3600\/21<\/strong><\/td>\n<td>3600 var<\/td>\n<td>Up to 21<\/td>\n<td>190 \u00d7 39 \u00d7 160 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The dimensions shown apply to the controller only. The reactor is mounted separately and requires additional installation space.<\/p>\n<p>Depending on the configuration, the system can work with additional reactors to extend the available compensation range. The maximum system compensation output is <strong>7600 var<\/strong> with an appropriately selected configuration.<\/p>\n<p>Custom versions with individually selected reactor designs, compensation outputs and numbers of regulation steps are also available, including configurations with <strong>up to 43 regulation steps<\/strong>.<\/p>\n<hr \/>\n<p><strong>Applications<\/strong><\/p>\n<ul>\n<li><strong>Street lighting control cabinets<\/strong> \u2014 reactive power compensation in new and existing lighting installations.<\/li>\n<li><strong>Switchboard upgrades<\/strong> \u2014 flexible positioning of the controller and reactor, with reduced measurement wiring.<\/li>\n<li><strong>Commercial facilities and public buildings<\/strong> \u2014 automatic reduction of reactive energy charges in installations with suitable load characteristics.<\/li>\n<li><strong>Heritage buildings<\/strong> \u2014 reduced need for additional measurement wiring.<\/li>\n<li><strong>Infrastructure requiring remote supervision<\/strong> \u2014 integration of compensation parameters with monitoring and automation systems.<\/li>\n<\/ul>\n<hr \/>\n<p><strong>Select the right compensator for your installation<\/strong><\/p>\n<p>The output and configuration of the SILENTVAR S system should be selected based on an analysis of the installation\u2019s electrical parameters, load characteristics and reactive energy billing arrangements.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><span style=\"font-size: 24pt;\">AUTOMATIC COMPENSATION. QUIET OPERATION. LOWER COSTS.<\/span><\/p>\n<p><strong>Product description<\/strong><\/p>\n<p><strong>SILENTVAR M \/ L<\/strong> is an advanced automatic reactive power compensation system developed by <strong>COREVOLT<\/strong> for control cabinets, lighting installations and facilities requiring precise reactive power regulation.<\/p>\n<p>Models <strong>M and L<\/strong> combine the controller and the main reactor in a single enclosure. This integrated design simplifies installation, makes efficient use of cabinet space and reduces the number of separately installed components.<\/p>\n<p>The device automatically adjusts the compensation output to changing installation conditions, reducing billable reactive energy and the associated charges. A correctly selected and configured system can reduce these charges <strong>to zero<\/strong>, depending on the load characteristics, installation parameters and electricity billing arrangements.<\/p>\n<p>Quiet operation, compact dimensions and wireless parameter measurement make SILENTVAR suitable for both new installations and upgrades to existing infrastructure.<\/p>\n","protected":false},"featured_media":1084,"template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.astsystem.pl\/en\/wp-json\/wp\/v2\/product\/1082"}],"collection":[{"href":"https:\/\/www.astsystem.pl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.astsystem.pl\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.astsystem.pl\/en\/wp-json\/wp\/v2\/media\/1084"}],"wp:attachment":[{"href":"https:\/\/www.astsystem.pl\/en\/wp-json\/wp\/v2\/media?parent=1082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}