10 kV-level motor insulation system

Abstract

The invention provides a 10kV-level motor insulation system. A mica tape wrapped copper flat wire (1) is used for winding a coil, an aramid fiber-added epoxy polyester film dry mica tape with the thickness of 0.11 mm and the width of 25 mm is used as a mica insulation (2) of the coil, the mica insulation (2) of the coil is semi-wound for 6 layers outside the copper flat wire (1), the single-side thickness of the mica insulation (2) of the coil is 1.32 mm, and a linear semiconductor low-resistance anti-corona tape is used as a low-resistance anti-corona insulator (3) and is lapped and wound on 1 / 3 of the linear part outside the coil mica insulator (2) by one layer. The thickness of the single-side main insulation of the stator coil is reduced to 1.32 mm from the original 1.80 mm, the thickness of the main insulation is reduced by 0.48 mm under the condition that the electrical insulation performance meets the design requirement of the original insulation structure, and the insulation thinning rate reaches 20% or above. The purposes of increasing power under the same size and reducing the size under the same power are achieved, and a rising space is provided for energy-saving and consumption-reducing development.

Description

Technical field: [0001] The invention relates to a 10kV class motor insulation system. Background technique: [0002] The development of motor manufacturing has lasted for more than a hundred years, and people have mastered relatively mature motor production technology. It is well known that the life of the insulation determines the life of the motor. In the future, the development of motors will move towards the direction of the smallest possible size, the largest possible power, and the highest possible efficiency. In the final analysis, it is to do everything possible to improve the utilization rate of the motor slot, and thinning the insulation thickness can improve the slot utilization rate, but it is well known that the life of the insulation determines the life of the motor, so whoever can reduce the thickness of the insulation on the basis of ensuring the life of the motor will occupy An absolute market for the motor industry. [0003] At present, the insulation st...

AI Technical Summary

Problems solved by technology

However, the "single glass fiber-wrapped film-wrapped sintered copper flat wire or film-wrapped mica-wrapped copper flat wire" used for this insulation is a conventional winding copper flat wire, and the wire insulation thickness is obviously thicker.

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