How to select the load line of the inverter if it exceeds the rated standard

There are two ways to label the power of the inverter: square torque application and constant torque application. This is a very abstract idea, for the general user or the first time to choose the inverter, can not be understood at once.

To explain it in plain language: a squared torque application can be seen as an application with light loads or no overloads. For example, ordinary fans and pumps are loaded.

Constant torque applications can be seen as heavy-load applications, such as compressors, lifts, elevators, submersible pumps, roots blowers, and so on. It allows a certain amount of overload current in a certain period of time, and the specific parameters vary from manufacturer to brand, and can be selected with reference to the sample of the manual.

Often users only look at the motor power how many kw, how many kw inverter to choose, this is not rigorous, it is possible that the motor is a 100kw fan load and the selection of a 100kw heavy-duty application inverter, the price difference causes waste, it is also possible that the heavy-duty 100kw motor chooses a light-load 100kw inverter, running due to overload and jump protection, can not work normally. Therefore, when we select the inverter, we should select the inverter from the rated current of the motor and the load situation. Generally speaking, except for ordinary fans and ordinary water pumps, which are light-loaded, other transmission loads should choose inverters for heavy-duty applications.

In some special use scenarios, the inverter may also be raised by several grades to meet the needs.

So first of all, you must figure out what machine you are using and the power of the machine and other information in order to accurately select If you have any questions, you can contact me by email: wxjcdq

The inverter is appropriately equipped with a large one.

The inverter current depends on the load and is independent of the voltage, but the inverter has a maximum current limit.

The output current is related to the load, and the inverter is only a voltage source, which is not necessarily related to the increase of voltage, because the rated speed is basically constant torque regulation.

The input and output of the inverter are the same, and the current changes with the size of the load (input power), but the input power supply voltage should not exceed the upper limit of the rated voltage.

1. The input voltage of the inverter should not be too much higher than the rated voltage, generally within 10%, otherwise, the inverter will be protected or damaged.

2. The output voltage of the inverter is generally not allowed to exceed the rated voltage, and if it can, it is generally limited to a smaller range, which can work for a long time under the rated output current, and the output power is indeed higher than the rated output power.

3. That is to say, the rated output current and the maximum output current of the inverter are limited, and the maximum input and output voltage is limited within the range.

4. As an industrial operating equipment, the so-called rating is a limit on the one hand, and on the other hand, it will not be a very accurate limit.