The main circuit of the inverter application - Sunland inverter

Create Date: 2024-8-30 12:03:23|Source: Hope Sunland

Between the power supply and the inverter, there is a circuit breaker QF and a communication touch device KM, when the inverter does not have to for a long time. or when the equipment is overhauled, the circuit breaker is used as an isolation switch, which can block the power supply and ensure the safety of maintenance. At the same time, the circuit breaker has maintenance functions such as overcurrent and undervoltage. It can play a certain maintenance effect on the main circuit of the inverter. The effect of communicating the touch device, one is that it can easily turn on or off the power supply of the inverter through the button; The second is when the alarm output terminal of the inverter is activated. The inverter can be quickly removed from the power supply by the touch device.

                                 The main circuit of the inverter application - Sunland inverter

If an inverter only controls one motor, there is no need to switch with the power frequency, so there is no need to use a thermal relay because the inverter itself has a perfect maintenance function. However, when a frequency converter is connected to multiple motors, or when it is necessary to switch between frequency conversion and power frequency, each motor must have its own thermal relay for maintenance.

The inverter and the motor are generally not connected to the communication toucher, but it cannot be missing in the following conditions: the first situation is that when an inverter drags two or more motors, each motor should be equipped with a toucher: the second situation is that the motor needs to switch between the inverter and the power frequency, when the motor is switched to the power frequency power supply, it must be connected between the toucher and the inverter in advance, and obviously a toucher must also be connected with the inverter.
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