A low-center high-capacity motor

Abstract

The invention discloses a low-center high-capacity motor, which comprises a machine base, a rotor and a stator core arranged in the machine base, a winding coil is arranged on the stator core, and a windshield structure is fixedly arranged at the end of the winding coil. A junction box is arranged on the top, and the windshield structure includes a windshield ring coaxial with the outer diameter of the stator core arranged on the inner circle of the winding coil, between the stator core and its pressure ring, the upper and lower layers of the winding coil, between phases, and within phases The gaps are filled with felt pads, the winding coil is provided with a windshield coil outside the coil, the stator core and its pressure ring are wound with or without latitude tape, the latitude tape and the outside of the stator core are provided with a paint layer, and the junction box is provided with With pressure release membrane. The invention successfully reduces the center height of a 10kV motor to 355mm, not only has a short and exquisite appearance, is convenient to process, and has low cost, but also all performance indicators meet the performance parameter requirements of the same power level, and the motor capacity is successfully increased by two frame numbers.

Description

technical field [0001] The invention belongs to the field of design and manufacture of box-type high-voltage motors, in particular to a low-center high-capacity motor. Background technique [0002] In GB / T10446 "Technical Specifications for Y Series 10kV Three-phase Asynchronous Motors (Frame Size 450~630)", the minimum center height of the motor is 450 mm, but the market demand is ever-changing. With the increasing demand for low-center, high-capacity motors , the minimum center height of 10kV motors is 450 mm, which can no longer meet the needs of the market. Many users clearly require the center height of motors to be 400 mm or even 355 mm. When a large-capacity motor is set to a low center height, the windshield structure, junction box, and machine base structure of the motor's internal air passage must be adjusted accordingly, not only to meet the requirements of the electrical clearance and creepage distance of the 10kV motor, but also It is necessary to consider the ...

AI Technical Summary

Problems solved by technology

In particular, the windshield structure of the existing internal air passage occupies a considerable space inside the machine base, so that the effective material length of the motor is limited for a certain length of the machine base, and it is precisely because of this that the single-unit capacity of the motor cannot be increased.

With the existing configuration of the junction box, the pressure in the box cannot be released when a rare fault occurs in the junction box and an explosion occurs, which may easily cause damage to the components in the box

The existing frame cannot adapt to the installation of the adjusted junction box

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