{"id":1,"date":"2025-09-04T08:36:08","date_gmt":"2025-09-04T06:36:08","guid":{"rendered":"https:\/\/mesurex-sensors.com\/?p=1"},"modified":"2026-02-12T17:33:58","modified_gmt":"2026-02-12T16:33:58","slug":"notch-probes-for-monitoring-the-temperature-of-high-power-motor-windings","status":"publish","type":"post","link":"https:\/\/mesurex-sensors.com\/en\/dossier\/les-sondes-a-encoches-pour-surveiller-la-temperature-des-bobinages-de-moteur-grosse-puissance\/","title":{"rendered":"Notch probes for monitoring the temperature of high-power motor windings"},"content":{"rendered":"
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In very high-power motors, alternators or generators (several tens of megawatts), the stator windings are subjected to considerable thermal heating. This can lead to premature motor wear or reduced machine efficiency.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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For easy detection of all motor stator overheating and consistent thermal monitoring,\u00a0Mesurex has developed the LE1 notched PT100 probe<\/a>.<\/p>

This probe is the fruit of a\u00a0long R&D effort<\/em>\u00a0to select: the\u00a0suitable insulators<\/strong>\u00a0(multi-layer Teflon or Kapton), a\u00a0special Epoxy insert<\/strong>\u00a0(with holding time up to 180\u00b0C), and\u00a0suitable connecting wires<\/strong>\u00a0(in 3 or 4 wires). The prototype was also subjected to numerous\u00a0temperature testing<\/strong>\u00a0(0\u00b0C to 100\u00b0C) and\u00a0insulation tests<\/strong>\u00a0to guarantee perfect operation at 5kV.<\/p>

The final LE1 product from Mesurex allows you to\u00a0measure temperatures from -20\u00b0C to 180\u00b0C<\/strong>. Its dimensional characteristics (flat, thin, rectangular with a long sensitive zone<\/strong>) allow it to be placed in the stator slots of motors to easily detect any overheating.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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These products respect\u00a0PT100 standard NF EN 60751<\/strong>, and the\u00a0EDF specifications HN-51-S-01<\/strong>.<\/p>

Various sizes are available as standard, depending on the insulation voltage required:<\/p>

80mm x 10mm x 2.5mm (5000V) \u25a0 80mm x 7.5mm x 2mm (3000V) \u25a0 50mm x 8mm x 2mm (3000V) \u25a0 50mm x 5mm x 2mm (3000V) \u25a0 80mm x 8.3mm x 2.5mm (5000V), but\u00a0customizable formats<\/strong><\/em>\u00a0according to customer needs.<\/p>

In addition, Mesurex provides\u00a0special care during assembly<\/strong>\u00a0to avoid any problems with subsequent insulation. In its metrology laboratory, Mesurex also performs\u00a0dielectric tests on each probe<\/em>\u00a0to validate its insulation resistance. Each probe is delivered with\u00a0its own calibration report and test certificate<\/em>\u00a0<\/strong>(temperature measurement, dielectric test validation, dimensional test, etc.).<\/p>

Mesurex's production facilities in the Paris region manufacture\u00a0customized sensors<\/strong>\u00a0to suit each customer's needs, constraints and requirements. To find out more about our products, visit our\u00a0site<\/a>\u00a0and tell us about your needs\u00a0me*****<\/span>@*****<\/span>ex.fr<\/span><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Dans les moteurs, alternateurs ou g\u00e9n\u00e9rateurs de tr\u00e8s grosse puissance (plusieurs dizaines de m\u00e9gawatts), les bobinages statoriques sont soumis \u00e0 des \u00e9chauffement thermiques importants. Ceux-ci peuvent provoquer une usure pr\u00e9matur\u00e9e des moteurs ou induire un moindre rendement de la machine. Pour d\u00e9tecter ais\u00e9ment tous les \u00e9chauffements dans le stator des moteurs et assurer une surveillance […]<\/p>\n","protected":false},"author":1,"featured_media":3236,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[],"class_list":["post-1","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dossier"],"_links":{"self":[{"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/posts\/1","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/comments?post=1"}],"version-history":[{"count":10,"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/posts\/1\/revisions"}],"predecessor-version":[{"id":6194,"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/posts\/1\/revisions\/6194"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/media\/3236"}],"wp:attachment":[{"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/media?parent=1"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/categories?post=1"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mesurex-sensors.com\/en\/wp-json\/wp\/v2\/tags?post=1"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}