Vallum Vallis classis velit materiae secundum ad calorem facultatem dividitur in y a, E, B, F, H et C7 campester, eius terminus operantes temperatus est respective XC, CV, CXX, et super CLXXX ℃. Performance reference temperature (℃)A80E95B100F120H145 insulation materials according to the thermal stability can be divided into the following seven levels: 1, and Y, 90 degrees, cotton 2, class A, 105 degrees, 3, E, 120 degrees, 4 B, 130 degrees, mica, 5 F, 155 degrees, 6 of epoxy resin, class H, 180 degrees, Silicone Flexilis VII, genus C, super CLXXX gradus communiter usus classis b motricium, ejus internus tangit materia est saepe f, et aeris filum potest esse usura h gradu vel altius, ut amplio ejus qualis est. In generali ut amplio servitium vitae, saepe provectus velit requiruntur, humilis campester ad recensionem. Common class F insulation of the motor, for example, do B to examination, namely the temperature cannot exceed 120 degrees Fahrenheit (Remain 10 degrees as a cushion to avoid process instability caused by individual motor temperature rise out-of-tolerance)。 the so-called limit working temperature of the insulating material, refers to the motor within the design life expectancy, runtime winding insulation in the hot temperature. Secundum ad experientiam, gradus in materia in CV ℃, in genere B materiam ad CXXX ℃ sub conditione vitae potest esse usque ad X annis, sed in ipsa environment et temperatus et in XV ~ XX annis in generali. Si operating temperatus plus quam materia terminum operantes temperatus diu, senescit in velit, breve servitium vitae. Ita motricium in operatione, temperatus est unum de principalis factors vitae.
