Chapter 3 Mechanical and Electrical Installation
ACH200 Series High Voltage Variable Frequency Speed Control System Operating Manual
21
Figure.3-1
The distance between the back of the cabinet and the wall should be greater than 1000mm, the
distance between the front of the cabinet and the wall should be greater than 1500mm, the distance
between the two sides of the cabinet and the wall should be greater than 500mm and the distance
between the top of all series units and the roof should be greater than 1000mm.
3.1.3 Equipment Cooling Guidance
High voltage AC drives are large electronic devices and have strict environmental requirements.
According to the operation of many equipments on site, the proportion of equipment failures caused
by high ambient temperature on site is large, so our company has proposed three solutions for high
voltage AC drive site cooling for users to choose. The three options are: 1. retrofitting air
conditioning; 2. retrofitting air ducts; 3. air and water cooling.
Each of the three options has its own scope of application, and the choice of specific solutions
should be based on the site environment and the technical solutions given by our company. The
following is a brief description of the principles and scope of application of the three options for the
user's reference.
1
）
Retrofitting of air conditioning
a
）
Cooling capacity of air conditioners
The high-voltage frequency converter is placed in a relatively closed room, and then the air
conditioner is installed in the room, and the heat generated by the high-voltage frequency converter
is discharged to the outside through the circulation inside the air conditioner. The AC drive heat
generation needs to be selected according to the operating conditions, taking into account a certain
margin. The maximum heat generation is 4% of the rated power of the AC drive, and the AC drive
heat generation is selected as 3.5% of the actual average output power. If the long-term operating
