Many customers know that high-power frequency conversion cabinet can effectively reduce the impact of high-power water pump/fan on the power grid and the large pressure drop, and the energy saving effect is remarkable. However, the working environment and characteristics of the inverter cabinet are not clear, which may lead to safety problems in the use of the inverter cabinet. The following analysis can help users quickly understand the working environment and characteristics of the frequency conversion cabinet, and effectively ensure the efficiency and safety of the frequency conversion cabinet.

　　Three-branch frequency converter

The 1. frequency conversion cabinet is mainly used to adjust the operating frequency of the equipment, reduce energy loss, can smoothly start the equipment, and reduce the damage to the motor caused by the large current generated when the equipment is directly started. At the same time, it comes with analog input (speed control or feedback signal),PID control, pump switching control (for constant pressure), communication function, macro function (different parameter settings for different occasions), multi-stage speed, etc. Can be widely used in industrial and agricultural production and all kinds of building water supply, drainage, fire, spray pipe network pressurization and HVAC cold and hot water circulation and other occasions of automatic control.

　Working environment conditions of frequency conversion cabinet

(1) The ambient air temperature does not exceed 40°C and is not lower than -20°C,

(2) The relative humidity at the highest temperature does not exceed 50% +40°C. When the temperature is lower, a higher relative humidity is allowed, such as 90% at 20°C,

(3) The altitude of the installation site does not exceed 2000 meters,

(4) For the installed product leakage circuit breaker, the surrounding external magnetic field will not exceed the geomagnetic field in any direction.

(5) No fire, explosion hazard and serious pollution,

(6) No chemical corrosion and severe vibration.

　　Characteristic Analysis of 2. Frequency Converter Cabinet

Frequency conversion cabinet is mainly to adjust the working frequency, reduce the energy loss in the work, to ensure that the equipment can work normally, its main contribution is to reduce the damage of large current to the motor when the equipment starts directly. Frequency control cabinet has a good reputation in industry, agriculture, construction and other industries. Let's briefly introduce the functional characteristics of the variable frequency cabinet.

　　Frequency conversion cabinet function characteristics analysis:

　　1. Power switching and protection function of frequency conversion cabinet

The frequency conversion cabinet is usually designed with a circuit breaker element, which is connected to the incoming power supply, which can help the frequency conversion control cabinet to complete the on-off operation of the circuit, and can provide protection when the circuit and the frequency converter are short-circuited or overloaded. In addition, the frequency conversion cabinet can also cut off the power supply during motor maintenance to ensure the safety of the operator.

　　2. Intuitive control function of frequency conversion cabinet

The cabinet body of the frequency conversion control cabinet is designed with display equipment and operation panel, which is connected with the electrical components inside the frequency conversion control cabinet, which can directly display the running state of the frequency conversion control cabinet, and is convenient for the operator to control the operation of the frequency conversion device and carry out on-site operation on the controlled equipment such as the motor.

The cabinet body of the frequency conversion cabinet is also equipped with various instruments and indicators, such as voltmeter, ammeter, frequency meter, power supply indicator, alarm indicator, operation indicator, power frequency indicator, etc. The operation and operation status of the frequency converter can be directly reflected on various instruments and indicator lights to realize real-time monitoring of the working status of the frequency converter.

　　3. Frequency conversion speed regulation function of frequency conversion cabinet

The control panel of the variable frequency cabinet is provided with a potentiometer for variable frequency speed regulation, which can transmit command signals to the motor according to the output frequency of the operator to control the speed of the motor. Some products in the frequency conversion cabinet are equipped with power frequency switching function to ensure that the motor is switched back to the power frequency power supply through the automatic control circuit when the frequency converter fails.

　　4. Safety protection function of frequency conversion cabinet

Variable frequency cabinet will include a variety of inverter, including a variety of electrical components are concentrated in the cabinet, which can reduce the impact of the external environment on electrical components, reduce the degree of environmental pollution of electrical components, but also reduce the risk of electric shock inverter cabinet operators, so it has a good safety protection effect.