{"id":5390,"date":"2023-06-07T16:09:31","date_gmt":"2023-06-07T08:09:31","guid":{"rendered":"http:\/\/www.dcl-controls.com\/?p=5390"},"modified":"2025-03-31T09:11:10","modified_gmt":"2025-03-31T09:11:10","slug":"used-in-high-altitude","status":"publish","type":"post","link":"https:\/\/dclcontrols.com\/en\/support\/an-actuator\/used-in-high-altitude","title":{"rendered":"Can DCL Actuators Be Used in High-Altitude Areas?"},"content":{"rendered":"
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High-altitude environments present unique challenges that can impact the performance of DCL electric actuators<\/strong>. This report evaluates their usage at 3,000 meters above sea level<\/strong>.<\/p>

1. How High Altitude Affects Electrical Products<\/strong><\/h2>

As altitude increases:
\u2714 Air density and pressure decrease<\/strong>, leading to lower insulation strength<\/strong> and increased risk of electrical breakdown.
\u2714 Cooling efficiency decreases<\/strong>, causing higher temperature rise<\/strong> in motors and electronics.
\u2714 Lubricants evaporate faster<\/strong>, and gases or liquids<\/strong> are more likely to leak from sealed components.
\u2714 Temperature drops<\/strong>, with large day-night fluctuations, affecting mechanical parts.
\u2714 Lower humidity<\/strong> reduces insulation but increases brush wear<\/strong> in motors.
\u2714 Stronger solar radiation<\/strong> accelerates material aging.<\/p>

Main Impact Areas<\/strong><\/h3>

  • Electrical insulation and temperature rise<\/strong> are the primary concerns.<\/p><\/li>

  • Mechanical structures<\/strong> may be affected by low pressure and temperature variations<\/strong>.<\/p><\/li><\/ul>

    2. Impact on Mechanical Structure at 3,000m<\/strong><\/h2>

    • Air pressure changes have no effect<\/strong> on the actuator’s mechanical parts.<\/p><\/li>

    • Low temperatures increase grease viscosity<\/strong>, affecting torque output.<\/p><\/li>

    • Sealed components are well-protected<\/strong> within the actuator\u2019s strong, weather-resistant housing.
      \u2714 As long as the temperature remains above -25\u00b0C, the actuator delivers its rated torque.<\/strong><\/p><\/li><\/ul>

      3. Impact on Electric Motor at 3,000m<\/strong><\/h2>

      • Temperature Rise<\/strong><\/p>

        • According to GB755-87 and GB5171-2002<\/strong> motor standards, temperature rise increases 1% per 100m<\/strong> altitude.<\/p><\/li>

        • DCL motors normally operate below 50\u00b0C<\/strong>, well within the 60\u00b0C limit<\/strong> set by JB\/T 8219-2016<\/strong>.<\/p><\/li><\/ul><\/li>

        • Insulation Strength<\/strong><\/p>

          • Motor insulation resistance at sea level: \u2265100M\u03a9<\/strong><\/p><\/li>

          • At 3,000m, insulation drops to 72.9M\u03a9<\/strong>, still well above the 20M\u03a9<\/strong> safety limit.<\/p><\/li><\/ul><\/li>

          • Mechanical Performance<\/strong><\/p>

            • Low temperatures can affect rotor bearings<\/strong>, making low-temperature bearings<\/strong> preferable.<\/p><\/li>

            • Higher wear on carbon brushes<\/strong> in DC motors.<\/p><\/li><\/ul><\/li><\/ul>

              4. Impact on Servo Controller at 3,000m<\/strong><\/h2>

              \u2714 Minimal impact<\/strong>, as all electronic components are epoxy-sealed<\/strong> and have adequate creepage distances<\/strong>.<\/p>

              5. Impact on Capacitors at 3,000m<\/strong><\/h2>

              • Standard capacitors are rated for \u22642,000m altitude<\/strong> (GB\/T 3667.2-2016).<\/p><\/li>

              • DCL capacitors exceed this requirement<\/strong>, with actual withstand voltage higher than 2\u00d7 the rated voltage<\/strong>.
                \u2714 At 3,000m, DCL capacitors still meet insulation requirements.<\/strong><\/p><\/li><\/ul>

                6. Impact on Potentiometers, Micro Switches, and Other Electrical Components<\/strong><\/h2>

                • These components have no altitude-specific limitations<\/strong>.<\/p><\/li>

                • Their insulation resistance remains \u2265100M\u03a9<\/strong>, and their voltage withstand<\/strong> (originally 1,500V AC for micro switches and 500V AC for potentiometers) decreases by only 10% per 1,000m<\/strong>, still within safe limits.<\/p><\/li><\/ul>

                  7. Final Conclusion<\/strong><\/h2>

                  According to JB\/T 8219-2016<\/strong>, standard industrial electric actuators are designed for \u22641,300m altitude<\/strong>.<\/p>

                  \u2714 However, DCL actuators have higher design tolerances<\/strong> and sufficient safety margins<\/strong> in insulation and temperature rise.
                  \u2714 At 3,000m, they function normally but require proper grounding due to reduced insulation strength (about 72.9% of normal).<\/strong>
                  \u2714 Field tests in Delingha (2,980m altitude) confirm stable performance.<\/strong><\/p>

                  Recommendation<\/strong><\/h3>

                  DCL electric actuators can be used at 3,000m altitude without performance issues, provided proper grounding is ensured.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

                  High-altitude environments present unique challenges that can impact the performance of DCL electric actuators. This report evaluates their usage at 3,000 meters above sea level. 1. How High Altitude Affects Electrical Products As altitude increases:\u2714 Air density and pressure decrease, leading to lower insulation strength and increased risk of electrical breakdown.\u2714 Cooling efficiency decreases, causing […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":true,"footnotes":""},"categories":[91],"tags":[53],"class_list":["post-5390","post","type-post","status-publish","format-standard","hentry","category-an-actuator","tag-actuator"],"acf":[],"_links":{"self":[{"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/posts\/5390","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/comments?post=5390"}],"version-history":[{"count":0,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/posts\/5390\/revisions"}],"wp:attachment":[{"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/media?parent=5390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/categories?post=5390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dclcontrols.com\/en\/wp-json\/wp\/v2\/tags?post=5390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}