Users of MENZEL squirrel cage motors of cooling types IC 411 and IC 416 benefit from the low life-cycle costs of our electric motors, due to high product quality. In addition, our rib-cooled electric motors are characterized by their economical operation, simple maintenance and extremely long lifespan. The significance of cost-efficiency and profitability, the worldwide demand for standard three-phase motors with low, medium and high voltage were the most important reasons for the market launch of the MENZEL MEBKGR series.
The high level of efficiency is a result of the use of low-loss electrical sheets for the stator and rotor packages of our squirrel cage motors. In addition, we guarantee low-friction bearing set-up, and an optimal electrical design pursuant to the customer’s requirements. This results in enormous energy savings for users.
Just like all of our three-phase asynchronous motors, MENZEL surface-cooled squirrel cage motors are produced pursuant to the European Standards IEC 60034 and EN 60034, VDE, DIN and ISO in their current form.
By 本站 2020/2/21 15:27:58
The motor cooling method involving various factors such as cost, installation space and ventilation and heat dissipation effects,and includes the nature of the cooling medium, the arrangement of various cooling circuits and the driving mode of the cooling medium, so how to choose the motor cooling method according to the actual working condition is important.
How to choose cooling mode for variable frequency motor ?
According to the specific load characteristics, the variable-frequency adjustable speed motor usually uses several cooling modes, such as IC411, IC416, IC611, IC616, IC666, IC86W, etc. the wise and reasonable suggestion is: according to the specific situation, the reasonable selection of cooling mode not only reduce the purchase cost, but also reduce the operation cost.
How to select cooling mode for Constant torque load?
The load characteristics are constant torque below the base speed and constant power above the base speed. That is to say, in the process of low-frequency starting and low-frequency operation, the variable-frequency speed regulating motor still outputs a large torque (rated torque). At this time, if the cooling mode with its own fan (such as IC411, IC611) is adopted, because of the low speed and the deterioration of cooling conditions, the motor heating is very serious, so it is necessary to add an independent forced cooling fan to the motor to ensure the safe operation of all frequency bands.
How to choose the motor cooling method when load of fans and pumps?
When the driving load of variable frequency motor is fan and pump load, the load torque changes with the square of rotation speed (TL ∝ N2). The load torque is very small when the motor is running at low speed, the output power of motor shaft is very low, and the heat output is also very small. There is no need to worry about the heat dissipation when the variable frequency motor is running at low speed. You can choose the cooling mode IC411 and IC611 with internal and external fans.
So it is necessary to choose the right cooling method according to the characteristics of the driving load and the difference of the using environment to ensure the safe and economic operation.