Chapter 3 Mechanical and Electrical Installation
ACH200 Series High Voltage Variable Frequency Speed Control System Operating Manual
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The formula for calculating the total cooling air volume of each AC drive is: single fan air
volume x number of fans. The fan on top of the AC drive cabinet and the fan configured for the air-
cooling system are designed as a thermal standby structure. The system uses indoor closed-
circulation cooling and the ambient temperature is controlled within 40°C. When the air- and water-
cooling device fails or the outdoor ambient temperature is low, the exhaust air of the AC drive can
be isolated from the air inlet of the air- and water-cooling device, and the hot air of the AC drive is
directly discharged to the outdoors; the temperature of the AC drive room is guaranteed to be below
40°C through external ambient cooling. Thereby, the operating costs of the AC drive are further
reduced.
For the cooling water flow rate at the user's site, the empirical estimation is based on a cooling
water flow rate of 3m³/h~4m³/h per 10kW of cooling power.
3.1.4 Foundations and Foundation Design
The ACH200 series high voltage AC drive must be installed on a level concrete foundation
with a surface unevenness of <5mm; the foundation must be of non-combustible material with a
moisture-proof, smooth and non-abrasive surface and able to withstand the weight of the AC drive;
the cable ducts must be of non-combustible material with a non-abrasive surface and have measures
to prevent moisture, dust and animals from entering. After ordering, the user should carry out
construction according to the foundation plan provided by the company.
The design of the foundation should take into account the front and rear access space of the
high voltage AC drive and the location of the cooling ducts, as well as the installation and orientation
of the high voltage cables for the power supply, the high voltage cables for the drive motor and the
system control cables. It is recommended to design the cable trench or cable lead slot underneath
the AC drive when designing the foundation (high voltage power, control and signal lines must be
separated, otherwise they will affect the use effect), the wiring schematic and wiring requirements
are as follows, the specific installation dimensions are detailed in the engineering drawings shipped
with the unit.
